**P0717 Code Mercedes: Comprehensive Guide for Diagnosis and Repair**

The P0717 Code Mercedes indicates an issue with the Turbine/Input Shaft Speed Sensor “A” Circuit, potentially leading to erratic shifting and transmission problems. CARDIAGTECH.NET offers diagnostic tools and repair solutions that can help you address this issue effectively, ensuring smooth and reliable vehicle performance. Solving this will prevent further damage and ensure a smoother driving experience. We provide professional tools to help address sensor failures, circuit issues, and ensure proper diagnostics.

1. Understanding the P0717 Code on Your Mercedes

1.1 What Does the P0717 Code Mean for Mercedes-Benz Vehicles?

The P0717 code signifies a problem with the input turbine speed sensor “A” circuit on your Mercedes-Benz. This sensor monitors the rotational speed of the transmission’s input shaft, relaying this information to the transmission control module (TCM). When the TCM detects an irregular or absent signal from this sensor, the P0717 code is triggered, potentially impacting shift timing and overall transmission function. Proper diagnosis and repair are essential to maintain optimal performance. This issue often manifests through symptoms such as harsh shifting, delayed engagement, and potential transmission slippage, indicating an urgent need for diagnostic intervention.

1.2 What Are the Common Symptoms Associated With the P0717 Error?

Common symptoms associated with the P0717 error include:

Erratic Shifting: The transmission may shift inappropriately or at the wrong times.
Harsh Shifting: Gear changes may feel rough or abrupt.
Delayed Engagement: There may be a noticeable delay when shifting into drive or reverse.
Transmission Slippage: The engine RPM may increase without a corresponding increase in vehicle speed.
Check Engine Light: The check engine light will illuminate on the dashboard.
Limp Mode: The vehicle may enter a limited-power “limp mode” to prevent further damage.
Decreased Fuel Efficiency: Inefficient shifting can lead to reduced fuel economy.
Inability to Shift: In some cases, the transmission may fail to shift at all.
Stalling: The engine might stall when coming to a stop.
Speedometer Issues: Inaccurate speed readings may occur.

These symptoms indicate the severity of the issue and the need for immediate attention. Addressing these symptoms promptly can prevent further damage to the transmission system.

1.3 What Are the Potential Causes of the P0717 Code in Mercedes Vehicles?

The P0717 code in Mercedes vehicles can stem from several potential causes, including:

Faulty Input Speed Sensor: The sensor itself may be damaged or malfunctioning.
Wiring Issues: Damaged, corroded, or loose wiring connected to the sensor can disrupt the signal.
Connector Problems: Corroded or loose connectors can prevent proper signal transmission.
Transmission Control Module (TCM) Failure: A malfunctioning TCM may incorrectly interpret or fail to process the sensor’s signal.
Low Transmission Fluid: Insufficient fluid levels can affect the sensor’s performance.
Contaminated Transmission Fluid: Debris or contaminants in the fluid can interfere with sensor readings.
Internal Transmission Damage: Mechanical issues within the transmission can impact sensor function.
Software Issues: Outdated or corrupt software in the TCM can cause misinterpretation of sensor data.
Voltage Problems: Fluctuations or drops in voltage to the sensor can cause inaccurate readings.
Sensor Mounting Issues: Improper mounting or alignment of the sensor can affect its accuracy.

Identifying the root cause is essential for effective repair and to prevent recurrence of the P0717 code. Regular maintenance and inspection of these components can help avoid these issues.

2. Diagnosing the P0717 Code in Mercedes

2.1 Step-by-Step Guide to Diagnosing the P0717 Code

Diagnosing the P0717 code involves a systematic approach to identify the root cause. Here’s a step-by-step guide:

Retrieve the Diagnostic Code: Use an OBD-II scanner to confirm the presence of the P0717 code and any other related codes.
Inspect the Input Speed Sensor: Locate the input speed sensor on the transmission and check for any visible damage.
Check Wiring and Connectors: Inspect the wiring and connectors leading to the sensor for damage, corrosion, or loose connections.
Test the Sensor: Use a multimeter to test the sensor’s resistance and signal output. Compare readings to the manufacturer’s specifications.
Examine Transmission Fluid: Check the transmission fluid level and condition. Look for low levels, contamination, or a burnt smell.
Inspect the TCM: Check the TCM for any signs of damage or corrosion. Ensure it is properly connected.
Perform a Scan of the TCM: Use a diagnostic scanner to read data from the TCM and check for any internal errors or inconsistencies.
Test the Circuit: Use a multimeter to check the continuity and voltage of the sensor circuit.
Road Test: After preliminary checks, perform a road test to observe the transmission’s behavior and confirm the symptoms.
Consult a Professional: If the issue persists, consult a professional mechanic for further diagnostics and repair.

Following these steps will help you accurately diagnose the P0717 code and implement the necessary repairs. Regularly performing these checks can also help prevent future issues.

2.2 What Tools and Equipment Are Needed for Diagnosis?

To effectively diagnose the P0717 code, you’ll need the following tools and equipment:

OBD-II Scanner: To read and clear diagnostic trouble codes.
Multimeter: To test the sensor’s resistance, voltage, and circuit continuity.
Wiring Diagram: To trace the sensor circuit and identify potential issues.
Jack and Jack Stands: To safely lift the vehicle for access to the transmission.
Socket Set and Wrenches: For removing and installing the sensor and related components.
Transmission Fluid: To check and replenish fluid levels.
Cleaning Supplies: To clean connectors and wiring.
Diagnostic Software: Advanced software for reading TCM data and performing specific tests.
Personal Protective Equipment (PPE): Gloves and eye protection for safety.
Inspection Light: To illuminate hard-to-see areas.
Scan Tool with Live Data: For real-time monitoring of sensor signals during a road test.

Having these tools on hand will streamline the diagnostic process and help ensure accurate results. CARDIAGTECH.NET offers a range of high-quality diagnostic tools to support your automotive repair needs.

2.3 How to Use an OBD-II Scanner to Read and Interpret Codes

Using an OBD-II scanner is straightforward. Here’s how to read and interpret codes:

Connect the Scanner: Plug the OBD-II scanner into the vehicle’s diagnostic port, usually located under the dashboard.
Turn on the Ignition: Turn the ignition key to the “on” position without starting the engine.
Power On the Scanner: The scanner should power on automatically. If not, ensure it has fresh batteries or is properly connected.
Select the Vehicle: Enter the vehicle’s make, model, and year if prompted by the scanner.
Read Codes: Select the “Read Codes” or “Diagnostic Codes” option from the scanner’s menu.
View Codes: The scanner will display any stored diagnostic trouble codes, including the P0717 code.
Interpret Codes: Refer to a code database or repair manual to understand the meaning of each code. The P0717 code indicates a problem with the input turbine speed sensor “A” circuit.
Record Codes: Write down all codes and their descriptions for future reference.
Clear Codes (Optional): After recording the codes, you can clear them to see if they reappear after addressing the issue. Select the “Clear Codes” option from the scanner’s menu.
Verify Repair: After performing the necessary repairs, use the scanner to ensure the code does not return.

Using an OBD-II scanner accurately helps in diagnosing issues and verifying repairs. CARDIAGTECH.NET provides reliable OBD-II scanners to help you efficiently manage your vehicle diagnostics.

3. Repairing the P0717 Code in Mercedes

3.1 Step-by-Step Instructions for Fixing the P0717 Code

Fixing the P0717 code requires a methodical approach. Here are step-by-step instructions:

Inspect and Replace the Sensor:
- Locate the input speed sensor on the transmission.
- Disconnect the sensor’s electrical connector.
- Remove the sensor from the transmission housing.
- Install a new, high-quality input speed sensor.
- Reconnect the electrical connector.
Check and Repair Wiring:
- Inspect the wiring harness leading to the sensor for any signs of damage or corrosion.
- Repair or replace any damaged wiring.
- Ensure all connections are secure and properly insulated.
Clean or Replace Connectors:
- Clean the sensor’s electrical connector and the corresponding connector on the wiring harness.
- Use electrical contact cleaner to remove any corrosion or debris.
- If the connectors are damaged, replace them with new ones.
Check and Refill Transmission Fluid:
- Check the transmission fluid level using the dipstick or fill plug.
- If the fluid is low, add the correct type of transmission fluid until it reaches the proper level.
Flush and Replace Transmission Fluid (If Necessary):
- If the transmission fluid is contaminated or old, perform a complete fluid flush.
- Replace the transmission filter during the fluid flush.
- Use the correct type of transmission fluid recommended by Mercedes-Benz.
Inspect and Repair the TCM:
- Inspect the TCM for any signs of damage or corrosion.
- If the TCM is damaged, repair or replace it as necessary.
- Ensure all connections to the TCM are secure.
Update TCM Software:
- Check for any available software updates for the TCM.
- Use a diagnostic scanner to update the TCM software to the latest version.
Test Drive the Vehicle:
- After completing the repairs, take the vehicle for a test drive to ensure the P0717 code does not return.
- Monitor the transmission’s performance and check for any signs of erratic shifting or other issues.
Clear the Code:
- Use an OBD-II scanner to clear the P0717 code from the vehicle’s computer.
- Rescan the vehicle to ensure no other codes are present.

Following these detailed steps ensures a comprehensive repair, addressing both the symptoms and underlying causes of the P0717 code. CARDIAGTECH.NET offers the necessary tools and equipment to complete these repairs efficiently.

3.2 Replacing the Input Speed Sensor: A Detailed Guide

Replacing the input speed sensor involves several key steps to ensure proper installation and function:

Gather Tools and Materials: Collect a new input speed sensor, socket set, wrench, jack, jack stands, and safety glasses.
Safely Lift the Vehicle: Use a jack and jack stands to safely lift the vehicle, providing access to the transmission.
Locate the Input Speed Sensor: Refer to your vehicle’s repair manual to find the exact location of the input speed sensor on the transmission.
Disconnect the Electrical Connector: Carefully disconnect the electrical connector from the sensor.
Remove the Old Sensor: Use a socket or wrench to remove the old sensor from the transmission housing.
Install the New Sensor: Install the new sensor, ensuring it is properly seated and tightened to the manufacturer’s specifications.
Reconnect the Electrical Connector: Reconnect the electrical connector to the new sensor.
Lower the Vehicle: Carefully lower the vehicle from the jack stands.
Test Drive the Vehicle: Take the vehicle for a test drive to ensure the transmission is shifting properly and the P0717 code does not return.
Check for Leaks: Inspect the area around the sensor for any transmission fluid leaks.

Proper installation of the input speed sensor is crucial for resolving the P0717 code. CARDIAGTECH.NET offers high-quality replacement sensors and tools to ensure a successful repair.

3.3 How to Check and Repair Wiring and Connectors

Checking and repairing wiring and connectors is essential to resolve the P0717 code. Follow these steps:

Gather Tools: Collect a multimeter, wiring diagram, wire stripper, crimping tool, electrical tape, and contact cleaner.
Inspect Wiring: Visually inspect the wiring harness connected to the input speed sensor for any signs of damage, such as cuts, fraying, or corrosion.
Test Continuity: Use a multimeter to test the continuity of each wire in the circuit. Refer to the wiring diagram to identify the correct pins and wire colors.
Repair Damaged Wires: If you find any damaged wires, repair them using a wire stripper and crimping tool. Splice the wires together and cover them with electrical tape or heat shrink tubing.
Clean Connectors: Clean the electrical connectors with contact cleaner to remove any corrosion or debris.
Check for Loose Connections: Ensure all connectors are securely attached and that the pins are not bent or damaged.
Apply Dielectric Grease: Apply a small amount of dielectric grease to the connectors to prevent corrosion and improve electrical contact.
Test the Circuit: After repairing the wiring and connectors, retest the circuit with a multimeter to ensure proper continuity and voltage.
Secure Wiring: Secure the wiring harness to prevent it from rubbing against any sharp edges or moving parts.

Thorough inspection and repair of wiring and connectors can resolve many issues causing the P0717 code. CARDIAGTECH.NET offers the necessary tools and supplies to perform these repairs effectively.

3.4 What to Do if the TCM Is Faulty

If the TCM is identified as faulty, several actions can be taken:

Confirm the Diagnosis: Before replacing the TCM, confirm the diagnosis with a professional mechanic or a specialized diagnostic tool.
Check for Software Updates: Sometimes, a software update can resolve issues with the TCM. Use a diagnostic scanner to check for and install any available updates.
Inspect Connections: Ensure all connections to the TCM are secure and free from corrosion. Clean the connectors with electrical contact cleaner.
Repair Wiring: Check the wiring harness leading to the TCM for any signs of damage. Repair or replace any damaged wires.
Replace the TCM: If the TCM is indeed faulty, replace it with a new or refurbished unit. Ensure the replacement TCM is compatible with your vehicle.
Program the TCM: After replacing the TCM, it may need to be programmed to match your vehicle’s specifications. This typically requires a specialized diagnostic tool and software.
Test Drive the Vehicle: After replacing and programming the TCM, take the vehicle for a test drive to ensure the transmission is functioning properly.
Clear Diagnostic Codes: Use an OBD-II scanner to clear any diagnostic codes and verify that the P0717 code does not return.

Addressing a faulty TCM requires careful diagnosis and repair. CARDIAGTECH.NET offers a range of diagnostic tools and replacement TCMs to help you resolve this issue.

4. Preventing the P0717 Code in Your Mercedes

4.1 Regular Maintenance Tips to Avoid the P0717 Code

Preventing the P0717 code involves regular maintenance and attention to your vehicle’s transmission system. Here are some essential maintenance tips:

Regular Transmission Fluid Changes: Change the transmission fluid at the intervals recommended by Mercedes-Benz. This helps keep the fluid clean and free from contaminants.
Inspect Transmission Fluid Levels: Regularly check the transmission fluid level and top it off as needed. Low fluid levels can cause the transmission to overheat and malfunction.
Use the Correct Transmission Fluid: Always use the type of transmission fluid recommended by Mercedes-Benz. Using the wrong fluid can damage the transmission.
Check for Leaks: Inspect the transmission for any signs of leaks. Address any leaks promptly to prevent fluid loss and potential damage.
Inspect Wiring and Connectors: Periodically inspect the wiring and connectors leading to the input speed sensor and TCM. Look for any signs of damage or corrosion.
Keep the Vehicle Clean: Regularly clean the vehicle to prevent dirt and debris from accumulating around the transmission and sensor areas.
Drive Smoothly: Avoid harsh acceleration and abrupt braking, as these can put excessive stress on the transmission.
Monitor Transmission Performance: Pay attention to any unusual shifting patterns or noises. Address any issues promptly to prevent them from escalating.
Regular Diagnostic Scans: Perform regular diagnostic scans with an OBD-II scanner to check for any pending codes or potential issues.

Adhering to these maintenance tips can significantly reduce the risk of encountering the P0717 code and help prolong the life of your Mercedes-Benz transmission.

4.2 The Importance of Transmission Fluid Maintenance

Maintaining the transmission fluid is critical for the health and longevity of your Mercedes-Benz transmission. Here’s why:

Lubrication: Transmission fluid lubricates the moving parts of the transmission, reducing friction and wear.
Cooling: It helps cool the transmission by dissipating heat generated during operation.
Cleaning: Transmission fluid contains detergents that help keep the transmission clean by preventing the buildup of sludge and varnish.
Hydraulic Function: It acts as a hydraulic fluid, enabling the transmission to shift gears smoothly.
Protection: Transmission fluid protects the transmission components from corrosion and rust.

Regular fluid changes help maintain these benefits, preventing issues such as the P0717 code.

4.3 How Often Should You Change Your Mercedes Transmission Fluid?

The frequency of transmission fluid changes depends on your driving conditions and the specific recommendations of Mercedes-Benz. As a general guideline:

Normal Driving Conditions: Change the transmission fluid every 60,000 to 100,000 miles.
Severe Driving Conditions: Change the transmission fluid every 30,000 to 60,000 miles. Severe conditions include frequent towing, heavy traffic, and extreme temperatures.

Refer to your vehicle’s owner’s manual for the most accurate and specific maintenance schedule. Regular fluid changes help prevent transmission problems and extend the life of your vehicle.

4.4 Choosing the Right Transmission Fluid for Your Mercedes

Choosing the right transmission fluid is crucial for maintaining the performance and longevity of your Mercedes-Benz transmission. Here are some guidelines:

Consult Your Owner’s Manual: Refer to your vehicle’s owner’s manual for the recommended transmission fluid type.
Use OEM Fluid: Whenever possible, use the original equipment manufacturer (OEM) transmission fluid specified by Mercedes-Benz.
Check Fluid Specifications: Ensure the fluid meets the specifications outlined in your owner’s manual, such as MB 236.14 or MB 236.15.
Consider Synthetic Fluids: Synthetic transmission fluids often offer better performance and protection than conventional fluids, especially in extreme conditions.
Avoid Universal Fluids: Avoid using universal or multi-vehicle transmission fluids unless they are specifically approved for use in Mercedes-Benz vehicles.
Check for Compatibility: Verify that the fluid is compatible with your vehicle’s transmission type, such as automatic or manual.
Read Reviews: Read reviews and consult with mechanics to get recommendations on high-quality transmission fluids.

Using the correct transmission fluid helps ensure smooth shifting, reduces wear and tear, and prevents transmission problems. CARDIAGTECH.NET offers a range of high-quality transmission fluids to meet your vehicle’s needs.

5. Advanced Diagnostic Techniques for the P0717 Code

5.1 Using a Digital Storage Oscilloscope (DSO) for Sensor Analysis

A Digital Storage Oscilloscope (DSO) is an invaluable tool for advanced sensor analysis, providing a visual representation of electrical signals over time. Here’s how to use a DSO to analyze the input speed sensor signal:

Connect the DSO: Connect the DSO probes to the signal and ground wires of the input speed sensor.
Set the Time and Voltage Scales: Adjust the time and voltage scales on the DSO to capture the sensor’s signal accurately.
Start the Engine: Start the engine and observe the signal pattern on the DSO screen.
Analyze the Signal: Look for any irregularities in the signal, such as dropouts, spikes, or flat lines. A healthy sensor should produce a consistent, repeating waveform.
Compare with Known Good Signal: Compare the observed signal with a known good signal from a functioning sensor. This can help identify subtle issues that may not be apparent with a multimeter alone.
Check for Noise: Look for any excessive noise or interference in the signal, which can indicate wiring issues or electromagnetic interference.
Test Under Load: Perform the test while the vehicle is under load, such as during a road test, to see how the sensor performs under real-world conditions.

Using a DSO allows for a more detailed and accurate assessment of sensor performance, helping to pinpoint intermittent or subtle issues that can cause the P0717 code.

5.2 Performing a Pinpoint Test on the Sensor Circuit

Performing a pinpoint test on the sensor circuit involves systematically testing each component and connection to identify the source of the problem. Here’s how to do it:

Gather Tools: Collect a multimeter, wiring diagram, test leads, and safety glasses.
Disconnect the Sensor: Disconnect the input speed sensor from the wiring harness.
Test for Voltage: Use a multimeter to check for voltage at the sensor connector. Ensure the voltage matches the manufacturer’s specifications.
Test for Ground: Use a multimeter to check for a good ground connection at the sensor connector.
Test for Continuity: Use a multimeter to test the continuity of each wire in the sensor circuit. Check for any open circuits or shorts to ground.
Check Resistance: Measure the resistance of the sensor and compare it to the manufacturer’s specifications.
Inspect Connectors: Inspect all connectors in the circuit for corrosion, damage, or loose connections.
Check Wiring: Check the wiring harness for any signs of damage, such as cuts, fraying, or corrosion.
Test the TCM: If the circuit tests okay, the problem may be with the TCM. Perform a diagnostic scan of the TCM to check for any internal errors.
Repair as Needed: Repair or replace any faulty components or wiring as needed.

Performing a pinpoint test ensures a thorough diagnosis of the sensor circuit, helping to identify and resolve the root cause of the P0717 code.

5.3 Using Mercedes Diagnostic Software for In-Depth Analysis

Mercedes diagnostic software, such as XENTRY or DAS, provides in-depth analysis and diagnostic capabilities beyond what a generic OBD-II scanner can offer. Here’s how to use it:

Connect to the Vehicle: Connect the diagnostic interface to the vehicle’s diagnostic port.
Launch the Software: Launch the Mercedes diagnostic software on your computer.
Select the Vehicle: Select the vehicle’s make, model, and year.
Read Fault Codes: Read and record any fault codes stored in the vehicle’s computer.
Perform Quick Test: Perform a quick test to check all systems and identify any potential issues.
Access Transmission Module: Access the transmission control module (TCM) to view live data and perform specific tests.
View Live Data: View live data from the input speed sensor, such as RPM, voltage, and signal frequency.
Perform Guided Tests: Use the guided tests to diagnose specific issues, such as sensor failures or wiring problems.
Check for Software Updates: Check for any available software updates for the TCM.
Program Components: Program or calibrate new components, such as the input speed sensor or TCM.

Mercedes diagnostic software provides comprehensive diagnostic and programming capabilities, helping to resolve complex issues like the P0717 code effectively.

6. Real-World Case Studies of P0717 Code Resolution

6.1 Case Study 1: Faulty Input Speed Sensor Replacement

Vehicle: 2015 Mercedes-Benz C300
Complaint: Erratic shifting and check engine light.
Diagnosis: OBD-II scan revealed the P0717 code. Further testing indicated a faulty input speed sensor.
Solution: Replaced the input speed sensor with a new OEM sensor. Cleared the code and performed a test drive.
Outcome: The transmission shifted smoothly, and the check engine light did not return.

6.2 Case Study 2: Wiring Harness Repair

Vehicle: 2012 Mercedes-Benz E350
Complaint: Harsh shifting and occasional limp mode.
Diagnosis: The P0717 code was present. Visual inspection revealed a damaged wiring harness leading to the input speed sensor.
Solution: Repaired the damaged wiring harness by splicing in new wires and securing the connections.
Outcome: The transmission performance improved, and the P0717 code was resolved.

6.3 Case Study 3: Transmission Fluid Flush and Filter Change

Vehicle: 2018 Mercedes-Benz GLC300
Complaint: Delayed engagement and decreased fuel efficiency.
Diagnosis: The P0717 code was present along with contaminated transmission fluid.
Solution: Performed a transmission fluid flush and replaced the transmission filter with a new OEM filter.
Outcome: The transmission shifted smoothly, fuel efficiency improved, and the P0717 code was cleared.

6.4 Case Study 4: TCM Software Update

Vehicle: 2016 Mercedes-Benz CLA250
Complaint: Intermittent shifting problems and check engine light.
Diagnosis: The P0717 code was present. Diagnostic software revealed an outdated TCM software version.
Solution: Updated the TCM software to the latest version using Mercedes diagnostic software.
Outcome: The transmission performance stabilized, and the P0717 code was resolved.

These case studies demonstrate the importance of accurate diagnosis and appropriate repairs for resolving the P0717 code in Mercedes-Benz vehicles.

7. The Role of CARDIAGTECH.NET in Solving Your P0717 Issues

7.1 How CARDIAGTECH.NET Can Assist With Diagnosing and Repairing P0717

CARDIAGTECH.NET provides a comprehensive range of solutions to assist you in diagnosing and repairing the P0717 code on your Mercedes-Benz:

High-Quality Diagnostic Tools: We offer a wide selection of OBD-II scanners, multimeters, and advanced diagnostic software to accurately identify the root cause of the P0717 code.
Extensive Range of Replacement Parts: Our inventory includes OEM and aftermarket input speed sensors, wiring harnesses, connectors, and TCMs to ensure you have the parts you need for a successful repair.
Expert Technical Support: Our team of experienced technicians is available to provide technical support and guidance throughout the diagnostic and repair process.
Detailed Repair Guides: We offer detailed repair guides and step-by-step instructions to help you perform the necessary repairs efficiently and effectively.
Competitive Pricing: We offer competitive pricing on all our products and services to ensure you get the best value for your money.
Fast Shipping: We provide fast and reliable shipping to get you the parts and tools you need quickly.
Customer Satisfaction Guarantee: We stand behind our products and services with a customer satisfaction guarantee.

CARDIAGTECH.NET is committed to providing you with the tools, parts, and support you need to resolve the P0717 code and keep your Mercedes-Benz running smoothly.

7.2 Featured Products for Addressing the P0717 Code

CARDIAGTECH.NET offers a variety of products specifically suited for addressing the P0717 code. Here are some featured products:

Product Category	Product Name	Description
OBD-II Scanners	Autel MaxiCOM MK808	Advanced diagnostic scanner with comprehensive Mercedes-Benz coverage.
Input Speed Sensors	OEM Mercedes-Benz Input Speed Sensor	High-quality OEM replacement sensor for accurate and reliable performance.
Multimeters	Fluke 117 Digital Multimeter	Durable and accurate multimeter for testing sensor circuits and voltage.
Wiring Repair Kits	Professional Wiring Repair Kit	Comprehensive kit with wire strippers, crimpers, connectors, and electrical tape.
Diagnostic Software	Mercedes-Benz XENTRY Diagnostics OpenShell	In-depth diagnostic software for accessing TCM data and performing advanced tests.
Transmission Fluid	Genuine Mercedes-Benz Transmission Fluid	OEM fluid specifically formulated for Mercedes-Benz transmissions.
Connector Cleaning Tools	Electrical Contact Cleaner	Effective cleaner for removing corrosion and debris from electrical connectors.
TCM Units	Remanufactured TCM Unit	Reliable remanufactured TCM unit for replacing faulty modules.

These products are designed to help you accurately diagnose and effectively repair the P0717 code on your Mercedes-Benz.

7.3 Customer Success Stories Using CARDIAGTECH.NET Products

Here are a few success stories from customers who have used CARDIAGTECH.NET products to resolve the P0717 code:

John S. from California: “I was struggling with the P0717 code on my Mercedes C300. I purchased the Autel MaxiCOM MK808 from CARDIAGTECH.NET, and it helped me quickly diagnose the problem. I replaced the input speed sensor, and the issue was resolved. Great product and excellent customer support “
Maria L. from Texas: “The wiring harness on my Mercedes E350 was damaged, causing the P0717 code. I bought the professional wiring repair kit from CARDIAGTECH.NET, and it had everything I needed to fix the wiring. The transmission is now shifting smoothly.”
David K. from Florida: “I used the Mercedes-Benz XENTRY Diagnostics OpenShell software from CARDIAGTECH.NET to update the TCM software on my CLA250. The software was easy to use, and it fixed the intermittent shifting problems. Highly recommended”
Susan P. from New York: “I purchased the OEM Mercedes-Benz transmission fluid from CARDIAGTECH.NET and performed a fluid flush on my GLC300. The transmission is now shifting like new, and the P0717 code is gone. Thank you for the excellent products and service “

These testimonials highlight the effectiveness of CARDIAGTECH.NET products and services in resolving the P0717 code.

8. Frequently Asked Questions (FAQs) About the P0717 Code

8.1 What Does the P0717 Code Specifically Indicate in a Mercedes-Benz?

The P0717 code in a Mercedes-Benz indicates a malfunction in the input turbine speed sensor “A” circuit. This sensor measures the rotational speed of the transmission’s input shaft, and the code is triggered when the signal is irregular or absent.

8.2 Can I Drive My Mercedes With the P0717 Code Present?

It is not recommended to drive your Mercedes with the P0717 code present. The transmission may shift erratically or enter limp mode, which can lead to further damage and safety concerns.

8.3 How Much Does It Typically Cost to Fix the P0717 Code?

The cost to fix the P0717 code can vary depending on the cause and the repair needed. Replacing the input speed sensor can cost between $200 and $400, while more extensive repairs, such as TCM replacement, can cost $1,000 or more.

8.4 Is the P0717 Code Considered a Serious Issue?

Yes, the P0717 code is considered a serious issue as it can affect the transmission’s performance and potentially lead to further damage. Addressing the problem promptly is essential.

8.5 What Happens if I Ignore the P0717 Code?

Ignoring the P0717 code can lead to worsening transmission problems, such as harsh shifting, delayed engagement, transmission slippage, and potential transmission failure.

8.6 Can Low Transmission Fluid Cause the P0717 Code?

Yes, low transmission fluid can cause the P0717 code as it can affect the sensor’s ability to accurately measure the input shaft speed.

8.7 How Do I Know if My TCM Is Faulty?

Signs of a faulty TCM include erratic shifting, failure to shift, communication errors, and the presence of multiple transmission-related codes. A professional diagnostic scan can confirm if the TCM is faulty.

8.8 Can I Replace the Input Speed Sensor Myself?

Yes, you can replace the input speed sensor yourself if you have mechanical skills and the necessary tools. However, it is essential to follow the repair instructions carefully.

8.9 What Type of Transmission Fluid Should I Use for My Mercedes?

Refer to your vehicle’s owner’s manual for the recommended transmission fluid type. Typically, Mercedes-Benz requires a specific OEM fluid that meets their specifications, such as MB 236.14 or MB 236.15.

8.10 Where Can I Find Reliable Replacement Parts for My Mercedes?

You can find reliable replacement parts for your Mercedes-Benz at CARDIAGTECH.NET, which offers a wide selection of OEM and high-quality aftermarket parts.

Don’t let the P0717 code disrupt your driving experience. Contact CARDIAGTECH.NET today at 276 Reock St, City of Orange, NJ 07050, United States, or via Whatsapp at +1 (641) 206-8880. Visit our website CARDIAGTECH.NET for expert advice and premium tools. We are here to ensure your Mercedes-Benz performs at its best. Get in touch now and let us help you resolve your automotive issues promptly and efficiently.