P0705 Code Mercedes-Benz: Diagnosis And Repair Guide

P0705 Code Mercedes-benz can be a frustrating issue. AutoExplain.com provides expert guidance on diagnosing and resolving the P0705 error code in Mercedes-Benz vehicles, focusing on the Transmission Range Sensor (TRS) circuit malfunction. Learn troubleshooting steps, repair solutions, and the benefits of remote support to address transmission problems efficiently.

1. Understanding the P0705 Code on Your Mercedes-Benz

The P0705 code in a Mercedes-Benz indicates a malfunction in the Transmission Range Sensor (TRS) circuit, also known as the Park/Neutral Position (PNP) switch. This sensor is crucial as it informs the vehicle’s computer about the transmission’s gear position, affecting starting, shifting, and overall performance. When the TRS malfunctions, it can lead to various drivability issues and trigger the P0705 code.

Understanding the intricacies of the P0705 code on your Mercedes-Benz is the first step toward resolving the issue effectively. This code signals a problem within the Transmission Range Sensor (TRS) circuit, a critical component of your vehicle’s transmission system.

1.1. What is the Transmission Range Sensor (TRS)?

The Transmission Range Sensor, often referred to as the Park/Neutral Position (PNP) switch, is an essential sensor that detects the position of the transmission gear selector. It communicates this information to the vehicle’s Engine Control Unit (ECU) or Transmission Control Module (TCM).

1.2. Function of the TRS

• Gear Position Detection: The TRS accurately detects whether the transmission is in Park, Reverse, Neutral, Drive, or any other gear.
• Starting Safety: It ensures that the engine can only be started when the transmission is in Park or Neutral, preventing accidental starts in gear.
• Shifting Control: The TRS provides data that assists the TCM in making precise and smooth gear changes.
• Backup Lights Activation: It signals when the vehicle is in Reverse, activating the backup lights.

1.3. Symptoms of a Faulty TRS

When the Transmission Range Sensor malfunctions, several symptoms may arise:

• Difficulty Starting the Engine: The engine may fail to start, especially in Park or Neutral.
• Inability to Shift Gears: The transmission may not shift properly or may get stuck in a gear.
• Erratic Shifting: The transmission may shift erratically or at the wrong times.
• Backup Lights Not Working: The backup lights may not illuminate when the vehicle is in Reverse.
• Dashboard Warning Lights: The Check Engine Light or Transmission Warning Light may illuminate.

1.4. Common Causes of the P0705 Code

Several factors can trigger the P0705 code in a Mercedes-Benz:

• Faulty TRS: The sensor itself may be defective due to wear, damage, or electrical issues.
• Wiring Problems: Damaged, corroded, or loose wiring and connectors in the TRS circuit.
• Contamination: Oil or debris contamination of the sensor or its connector.
• Misalignment: Improper adjustment or alignment of the TRS.
• ECU/TCM Issues: In rare cases, a faulty Engine Control Unit (ECU) or Transmission Control Module (TCM) can cause the code.

2. Diagnostic Steps for P0705 Error Code Mercedes-Benz

Diagnosing the P0705 error code in a Mercedes-Benz requires a systematic approach. Here are the steps to follow:

2.1. Initial Inspection

1. Visual Inspection:
   • Check the TRS and its wiring for any visible damage, corrosion, or loose connections.
   • Look for signs of oil or debris contamination on the sensor and connector.
2. OBD-II Scanner:
   • Use an OBD-II scanner to confirm the presence of the P0705 code and check for any other related codes.
   • Record all codes and freeze frame data, as this information can be valuable for further diagnosis.

2.2. Testing the TRS

1. Continuity Test:
   • Disconnect the TRS connector.
   • Use a multimeter to check for continuity between the sensor terminals.
   • Refer to the vehicle’s wiring diagram to identify the correct terminals.
2. Resistance Test:
   • Measure the resistance between the sensor terminals.
   • Compare the readings to the manufacturer’s specifications.
   • Significant deviations indicate a faulty sensor.
3. Voltage Test:
   • With the ignition on, check for proper voltage at the TRS connector.
   • Ensure that the sensor is receiving the correct voltage from the ECU/TCM.

2.3. Checking the Wiring and Connections

1. Wiring Inspection:
   • Carefully inspect the wiring harness for any signs of damage, such as cuts, abrasions, or melted insulation.
   • Pay close attention to areas where the wiring may be exposed to heat or friction.
2. Connector Inspection:
   • Check the connectors for corrosion, bent pins, or loose connections.
   • Clean the connectors with an electrical contact cleaner to ensure a good connection.
3. Ground Connection:
   • Verify that the TRS has a good ground connection.
   • Check the ground wire and its connection point for corrosion or looseness.

2.4. Advanced Diagnostics

1. ECU/TCM Testing:
   • If the TRS, wiring, and connections appear to be in good condition, the issue may lie with the ECU or TCM.
   • Use a professional-grade diagnostic tool to perform advanced testing of the ECU/TCM.
   • Check for any software updates or reprogramming that may be required.
2. Live Data Monitoring:
   • Use a diagnostic tool to monitor live data from the TRS while shifting gears.
   • Observe the sensor’s readings to see if they correspond correctly to the selected gear.
   • Inconsistent or erratic readings indicate a problem with the sensor or its circuit.

2.5. Using a Diagnostic Flow Chart

Refer to a diagnostic flow chart specific to the P0705 code for your Mercedes-Benz model. This chart provides a step-by-step guide to help you systematically diagnose the problem.

2.6. Professional Assistance

If you are not comfortable performing these diagnostic steps or if you are unable to identify the problem, it is best to seek professional assistance from a qualified mechanic or Mercedes-Benz specialist. AutoExplain.com offers remote support services to help you diagnose and resolve complex automotive issues. Contact us via WhatsApp at (+84)967469410 or email at [email protected] for expert assistance.

3. Repair Solutions for Mercedes-Benz P0705 Code

Once you’ve diagnosed the cause of the P0705 code, you can proceed with the necessary repairs. Here are the common solutions:

3.1. Replacing the Transmission Range Sensor (TRS)

If the TRS is found to be faulty, replacing it is the most straightforward solution.

1. Preparation:
   • Gather the necessary tools, including a socket set, wrench set, screwdriver, and a new TRS.
   • Disconnect the negative battery cable to prevent electrical shorts.
2. Removal:
   • Locate the TRS on the transmission. It is usually mounted on the side of the transmission case.
   • Disconnect the electrical connector from the TRS.
   • Remove the bolts or screws that secure the TRS to the transmission.
   • Carefully remove the old TRS.
3. Installation:
   • Clean the mounting surface on the transmission.
   • Install the new TRS, ensuring it is properly aligned.
   • Tighten the bolts or screws to the manufacturer’s specifications.
   • Reconnect the electrical connector to the TRS.
4. Testing:
   • Reconnect the negative battery cable.
   • Start the engine and check for proper shifting.
   • Use an OBD-II scanner to clear the P0705 code and verify that it does not return.

3.2. Repairing Wiring and Connections

If the P0705 code is caused by damaged wiring or loose connections, repairing them is essential.

1. Wiring Repair:
   • Identify any damaged wires in the TRS circuit.
   • Use a wire stripper and crimping tool to repair the damaged wires.
   • Protect the repaired wires with heat shrink tubing or electrical tape.
2. Connector Repair:
   • Clean any corroded connectors with an electrical contact cleaner.
   • Replace any damaged connectors with new ones.
   • Ensure that all connections are secure and properly seated.

3.3. Adjusting the TRS

In some cases, the P0705 code may be caused by a misaligned TRS. Adjusting the sensor can resolve the issue.

1. Locate Adjustment Points:
   • Identify the adjustment points on the TRS. These may be screws or bolts that allow you to adjust the sensor’s position.
2. Adjustment Procedure:
   • Loosen the adjustment screws or bolts.
   • Adjust the TRS until it is properly aligned according to the manufacturer’s specifications.
   • Tighten the adjustment screws or bolts to secure the sensor in place.
3. Testing:
   • Start the engine and check for proper shifting.
   • Use an OBD-II scanner to clear the P0705 code and verify that it does not return.

3.4. ECU/TCM Reprogramming or Replacement

If the P0705 code is caused by a faulty ECU or TCM, reprogramming or replacing the module may be necessary.

1. Reprogramming:
   • Take the vehicle to a qualified mechanic or Mercedes-Benz specialist.
   • Have the ECU or TCM reprogrammed with the latest software.
2. Replacement:
   • If reprogramming does not resolve the issue, the ECU or TCM may need to be replaced.
   • Install a new ECU or TCM and have it programmed to match the vehicle’s specifications.

3.5. Cleaning and Preventing Contamination

If oil or debris contamination is causing the P0705 code, cleaning the sensor and preventing future contamination is crucial.

1. Cleaning:
   • Disconnect the TRS connector.
   • Use an electrical contact cleaner to clean the sensor and connector.
   • Remove any oil or debris from the surrounding area.
2. Prevention:
   • Inspect the transmission for any leaks that may be causing the contamination.
   • Repair any leaks to prevent future contamination of the TRS.

3.6. Additional Tips for Repair

• Consult Repair Manuals: Always consult the vehicle’s repair manual for specific instructions and torque specifications.
• Use Quality Parts: Use high-quality replacement parts to ensure proper performance and reliability.
• Double-Check Connections: Double-check all wiring and connections to ensure they are secure and properly seated.

3.7. Seeking Professional Support

If you encounter any difficulties during the repair process or if you are unsure about any steps, it is best to seek professional support. AutoExplain.com offers remote support services to help you diagnose and resolve complex automotive issues. Contact us via WhatsApp at (+84)967469410 or email at [email protected] for expert assistance.

4. Preventing Future P0705 Code Issues

Preventing future P0705 code issues involves regular maintenance and proactive care. Here are some tips to help you keep your Mercedes-Benz running smoothly:

4.1. Regular Maintenance

1. Transmission Service:
   • Follow the manufacturer’s recommended maintenance schedule for transmission service.
   • This includes changing the transmission fluid and filter at the specified intervals.
2. Fluid Level Check:
   • Regularly check the transmission fluid level and top it off as needed.
   • Low fluid levels can cause the transmission to overheat and lead to sensor issues.
3. Visual Inspections:
   • Periodically inspect the TRS and its wiring for any signs of damage, corrosion, or loose connections.
   • Address any issues promptly to prevent them from escalating.

4.2. Protecting Wiring and Connections

1. Wiring Protection:
   • Protect the wiring harness from damage by using wire loom or conduit.
   • Keep the wiring away from heat sources and moving parts.
2. Connector Maintenance:
   • Clean the connectors with an electrical contact cleaner to prevent corrosion.
   • Apply dielectric grease to the connectors to protect them from moisture.

4.3. Monitoring Vehicle Performance

1. Driving Habits:
   • Avoid harsh acceleration and braking, as these can put stress on the transmission.
   • Drive smoothly and consistently to prolong the life of the transmission and its components.
2. Dashboard Warning Lights:
   • Pay attention to any dashboard warning lights, such as the Check Engine Light or Transmission Warning Light.
   • Address any issues promptly to prevent them from causing further damage.
3. Performance Issues:
   • Be aware of any performance issues, such as difficulty starting, shifting problems, or erratic shifting.
   • Have these issues diagnosed and repaired as soon as possible.

4.4. Using Quality Parts and Fluids

1. OEM Parts:
   • When replacing parts, use genuine OEM (Original Equipment Manufacturer) parts or high-quality aftermarket parts.
   • These parts are designed to meet the vehicle’s specifications and ensure proper performance.
2. Recommended Fluids:
   • Use the transmission fluid recommended by the manufacturer.
   • Using the wrong fluid can cause transmission problems and sensor issues.

4.5. Regular Diagnostic Checks

1. OBD-II Scans:
   • Periodically use an OBD-II scanner to check for any stored codes.
   • Address any codes promptly, even if they do not seem to be causing any immediate problems.
2. Professional Inspections:
   • Have the vehicle inspected by a qualified mechanic or Mercedes-Benz specialist on a regular basis.
   • They can identify potential issues before they become major problems.

4.6. Seeking Expert Advice

1. Consult Professionals:
   • If you have any questions or concerns about your vehicle’s performance, consult with a qualified mechanic or Mercedes-Benz specialist.
   • They can provide expert advice and guidance to help you keep your vehicle running smoothly.
2. Remote Support:
   • AutoExplain.com offers remote support services to help you diagnose and resolve complex automotive issues.
   • Contact us via WhatsApp at (+84)967469410 or email at [email protected] for expert assistance.

5. How AutoExplain.com Can Help with Your Mercedes-Benz P0705 Code

AutoExplain.com is your go-to resource for diagnosing and resolving the P0705 code on your Mercedes-Benz. Our team of experienced automotive technicians and Mercedes-Benz specialists provides expert guidance and support to help you get your vehicle back on the road quickly and efficiently.

5.1. Remote Diagnostic Support

1. Real-Time Assistance:
   • Our remote diagnostic support service provides real-time assistance to help you diagnose the cause of the P0705 code.
   • We can guide you through the diagnostic steps, interpret scan tool data, and provide expert advice.
2. Expert Technicians:
   • Our team of expert technicians has extensive experience working with Mercedes-Benz vehicles.
   • We have the knowledge and skills to help you identify and resolve even the most complex issues.
3. Convenient Support:
   • Our remote support service is available via WhatsApp at (+84)967469410 and email at [email protected].
   • You can get the help you need from the comfort of your own home or shop.

5.2. Access to Technical Information

1. Wiring Diagrams:
   • We provide access to detailed wiring diagrams for the TRS circuit on your Mercedes-Benz.
   • These diagrams can help you trace the wiring and identify any damaged or corroded wires.
2. Repair Procedures:
   • We offer step-by-step repair procedures for replacing the TRS, repairing wiring, and adjusting the sensor.
   • These procedures are designed to help you perform the repairs correctly and safely.
3. Technical Bulletins:
   • We provide access to technical service bulletins (TSBs) related to the P0705 code on Mercedes-Benz vehicles.
   • These bulletins can provide valuable information about common issues and repair solutions.

5.3. Parts and Equipment Recommendations

1. Quality Parts:
   • We recommend high-quality replacement parts for your Mercedes-Benz, including OEM parts and reputable aftermarket brands.
   • Using quality parts ensures proper performance and reliability.
2. Diagnostic Tools:
   • We can recommend the best diagnostic tools for scanning and troubleshooting the P0705 code.
   • These tools can help you quickly and accurately diagnose the issue.
3. Repair Equipment:
   • We provide recommendations for the necessary repair equipment, such as socket sets, wrench sets, and wire repair tools.
   • Having the right equipment makes the repair process easier and more efficient.

5.4. Step-by-Step Guidance

1. Diagnostic Steps:
   • We provide step-by-step diagnostic steps to help you identify the cause of the P0705 code.
   • These steps are designed to be easy to follow, even if you have limited automotive experience.
2. Repair Procedures:
   • We offer detailed repair procedures with clear instructions and illustrations.
   • These procedures guide you through the repair process, ensuring that you perform each step correctly.
3. Testing Procedures:
   • We provide testing procedures to help you verify that the repairs have been successful.
   • These procedures ensure that the P0705 code is resolved and that your vehicle is running properly.

5.5. Community Support

1. Forums and Discussions:
   • We offer access to online forums and discussion groups where you can connect with other Mercedes-Benz owners and enthusiasts.
   • You can share your experiences, ask questions, and get advice from others who have dealt with the P0705 code.
2. Expert Insights:
   • Our team of experts regularly participates in these forums and discussions, providing valuable insights and guidance.
   • You can get direct answers to your questions and learn from our extensive knowledge base.

5.6. Contact Us for Assistance

If you need help diagnosing or resolving the P0705 code on your Mercedes-Benz, don’t hesitate to contact AutoExplain.com. We are here to provide the expert support you need to get your vehicle back on the road. Contact us via WhatsApp at (+84)967469410 or email at [email protected]. Our office is located at 4590 Angus Road, New York, United States.

6. Tools Needed to Fix P0705 Error Code Mercedes-Benz

To effectively diagnose and repair the P0705 error code on a Mercedes-Benz, you’ll need a specific set of tools. Having the right tools on hand will not only make the job easier but also ensure the accuracy and safety of the repairs. Here’s a comprehensive list of tools you’ll likely need:

6.1. Diagnostic Tools

1. OBD-II Scanner:
   • An essential tool for reading and clearing diagnostic trouble codes (DTCs).
   • Look for a scanner that can read Mercedes-Benz specific codes for more detailed information.
2. Multimeter:
   • Used to test voltage, continuity, and resistance in electrical circuits.
   • Essential for checking the TRS wiring and connections.

6.2. Hand Tools

1. Socket Set:
   • A variety of sockets in different sizes to remove and install bolts and nuts.
   • Include both metric and standard sizes.
2. Wrench Set:
   • Combination wrenches, open-end wrenches, and box-end wrenches.
   • Needed for various tasks, including adjusting and securing components.
3. Screwdriver Set:
   • A set of Phillips head and flathead screwdrivers in various sizes.
   • Used to remove and install screws on the TRS and related components.
4. Torque Wrench:
   • Ensures bolts and nuts are tightened to the manufacturer’s specified torque.
   • Critical for proper installation and preventing damage.
5. Pliers:
   • Various types of pliers, including needle-nose, slip-joint, and locking pliers.
   • Used for gripping, cutting, and manipulating wires and components.

6.3. Electrical Tools

1. Wire Stripper/Crimper:
   • Used to strip insulation from wires and crimp electrical connectors.
   • Essential for repairing damaged wiring in the TRS circuit.
2. Electrical Contact Cleaner:
   • Used to clean corroded electrical connectors and contacts.
   • Ensures good electrical connections and prevents miscommunication.
3. Heat Shrink Tubing and Heat Gun:
   • Used to protect and insulate repaired wires.
   • Provides a secure and durable seal.

6.4. Specialty Tools

1. Wiring Diagram:
   • A detailed wiring diagram specific to your Mercedes-Benz model.
   • Helps you trace the wiring and identify the correct terminals.
2. Mercedes-Benz Repair Manual:
   • Provides detailed repair procedures and specifications for your vehicle.
   • An invaluable resource for accurate and safe repairs.

6.5. Safety Equipment

1. Safety Glasses:
   • Protects your eyes from debris and chemicals.
   • Essential for any automotive repair.
2. Gloves:
   • Protects your hands from dirt, grease, and chemicals.
   • Choose gloves that are resistant to automotive fluids.

6.6. Additional Supplies

1. Shop Rags:
   • For cleaning up spills and wiping down parts.
   • Keep a supply of clean rags on hand.
2. Penetrating Oil:
   • Helps loosen rusted or corroded bolts and nuts.
   • Apply before attempting to remove stubborn fasteners.
3. Dielectric Grease:
   • Used to protect electrical connectors from moisture and corrosion.
   • Apply to connectors after cleaning.

6.7. Recommendations from AutoExplain.com

Having the right tools is crucial for efficiently diagnosing and repairing the P0705 error code on your Mercedes-Benz. AutoExplain.com can provide further guidance on selecting the best tools and equipment for your specific needs. Contact us via WhatsApp at (+84)967469410 or email at [email protected] for expert assistance. Our team of experienced technicians is here to help you get your vehicle back on the road.

7. Estimated Cost To Fix P0705 Code On Mercedes-Benz

The cost to fix a P0705 code on a Mercedes-Benz can vary widely depending on the underlying cause of the problem. Factors that influence the cost include the specific repairs needed, the price of replacement parts, and labor rates at the repair shop. Here’s a breakdown of potential costs:

7.1. Diagnostic Costs

• OBD-II Scan: If you take your car to a mechanic for a diagnostic scan, expect to pay between $75 and $150. Some shops may offer a free initial scan.
• Advanced Diagnostics: More complex diagnostic procedures, such as testing the TRS circuit or ECU, can range from $150 to $300 or more.

7.2. Replacement Parts

• Transmission Range Sensor (TRS): The cost of a new TRS can vary depending on the brand and quality. Expect to pay between $100 and $400 for the part itself. Genuine Mercedes-Benz parts tend to be more expensive than aftermarket options.
• Wiring and Connectors: If damaged wiring or connectors need replacement, the cost can range from $50 to $200, depending on the extent of the damage and the complexity of the repair.

7.3. Labor Costs

• TRS Replacement: Labor costs for replacing the TRS can range from $100 to $300, depending on the location of the sensor and the complexity of the job.
• Wiring Repair: Repairing damaged wiring can take several hours, with labor rates typically ranging from $75 to $150 per hour.
• ECU/TCM Reprogramming: Reprogramming or replacing the ECU or TCM can be more expensive, with labor costs ranging from $200 to $500 or more.

7.4. Total Estimated Costs

• Simple Fix (TRS Replacement): If the P0705 code is due to a faulty TRS and the repair is straightforward, the total cost could range from $200 to $700.
• Moderate Fix (Wiring Repair): If the issue involves damaged wiring or connectors, the total cost could range from $300 to $1,000.
• Complex Fix (ECU/TCM Issues): If the problem is related to the ECU or TCM, the total cost could exceed $1,000 or even $1,500.

7.5. Additional Cost Considerations

• Shop Location: Labor rates vary depending on the geographic location of the repair shop. Urban areas tend to have higher rates than rural areas.
• Shop Reputation: Dealerships and reputable independent shops often charge more than smaller, less established shops.
• Warranty Coverage: If your Mercedes-Benz is still under warranty, some or all of the repair costs may be covered.

7.6. Saving on Repair Costs

• DIY Repairs: If you have experience with automotive repairs, you may be able to save money by performing the repairs yourself.
• Obtain Multiple Quotes: Get estimates from several different repair shops to compare prices.
• Use Aftermarket Parts: Consider using aftermarket parts instead of genuine Mercedes-Benz parts to save on the cost of replacement parts.
• Remote Support: AutoExplain.com offers remote support services to help you diagnose and resolve the P0705 code, potentially saving you money on diagnostic fees and unnecessary repairs.

7.7. Recommendations from AutoExplain.com

Understanding the potential costs associated with fixing the P0705 code on your Mercedes-Benz can help you make informed decisions about your repair options. AutoExplain.com can provide further guidance on estimating repair costs and finding cost-effective solutions. Contact us via WhatsApp at (+84)967469410 or email at [email protected] for expert assistance.

8. Common Mistakes to Avoid When Fixing P0705 Error Code Mercedes-Benz

When addressing the P0705 error code on a Mercedes-Benz, it’s essential to avoid common mistakes that can lead to misdiagnosis, improper repairs, and further complications. Here are some pitfalls to steer clear of:

8.1. Neglecting Initial Inspection

• Mistake: Skipping the initial visual inspection of the TRS, wiring, and connectors.
• Consequence: Overlooking obvious signs of damage, corrosion, or loose connections, leading to incorrect diagnoses.
• Solution: Always start with a thorough visual inspection to identify any apparent issues.

8.2. Ignoring Related Codes

• Mistake: Focusing solely on the P0705 code without checking for other related codes.
• Consequence: Missing underlying problems that contribute to the P0705 code, such as issues with the ECU or TCM.
• Solution: Use an OBD-II scanner to check for all stored codes and address them accordingly.

8.3. Failing to Test the TRS

• Mistake: Replacing the TRS without properly testing it to confirm that it’s faulty.
• Consequence: Spending money on a new TRS that may not be needed, and failing to resolve the actual problem.
• Solution: Perform continuity, resistance, and voltage tests on the TRS to verify its condition.

8.4. Overlooking Wiring Issues

• Mistake: Neglecting to inspect the wiring and connectors for damage, corrosion, or loose connections.
• Consequence: Overlooking wiring problems that can cause intermittent or persistent P0705 codes.
• Solution: Carefully inspect the wiring harness and connectors, and repair or replace any damaged components.

8.5. Improper Installation

• Mistake: Installing the new TRS incorrectly, such as failing to align it properly or tightening the bolts too much.
• Consequence: Damaging the new TRS or causing it to malfunction, leading to a recurrence of the P0705 code.
• Solution: Follow the manufacturer’s instructions for installing the TRS, and use a torque wrench to tighten the bolts to the specified torque.

8.6. Neglecting ECU/TCM Issues

• Mistake: Failing to consider the possibility that the P0705 code is caused by a faulty ECU or TCM.
• Consequence: Replacing the TRS and repairing wiring without addressing the underlying ECU/TCM problem, leading to continued issues.
• Solution: If the TRS and wiring appear to be in good condition, perform advanced testing of the ECU/TCM.

8.7. Using Low-Quality Parts

• Mistake: Using low-quality or non-OEM replacement parts.
• Consequence: Reduced performance, premature failure, and potential damage to other components.
• Solution: Use genuine OEM parts or high-quality aftermarket parts that meet the vehicle’s specifications.

8.8. Skipping Software Updates

• Mistake: Failing to check for software updates or reprogramming for the ECU or TCM.
• Consequence: The P0705 code may persist if the ECU or TCM is running outdated software.
• Solution: Check for any available software updates or reprogramming and install them as needed.

8.9. Ignoring Fluid Contamination

• Mistake: Overlooking the possibility that oil or debris contamination is causing the P0705 code.
• Consequence: Failing to clean the sensor and prevent future contamination, leading to a recurrence of the issue.
• Solution: Clean the TRS and connector with an electrical contact cleaner and inspect the transmission for any leaks.

8.10. Failing to Clear the Code

• Mistake: Not clearing the P0705 code after completing the repairs.
• Consequence: The Check Engine Light may remain on, even if the problem has been resolved.
• Solution: Use an OBD-II scanner to clear the P0705 code and verify that it does not return.

8.11. Seeking Expert Advice

Avoiding these common mistakes can help you diagnose and resolve the P0705 error code on your Mercedes-Benz more effectively. AutoExplain.com can provide further guidance and support to help you navigate the repair process. Contact us via WhatsApp at (+84)967469410 or email at AutoExplain[email protected] for expert assistance.

9. Mercedes-Benz Models Affected By P0705 Code

The P0705 code, indicating a Transmission Range Sensor (TRS) circuit malfunction, can affect various Mercedes-Benz models equipped with automatic transmissions. While the specific models and years may vary, here’s a general overview of the Mercedes-Benz vehicles that are commonly affected by this code:

9.1. C-Class

• Models: C230, C240, C250, C280, C300, C320, C350, C32 AMG, C43 AMG, C55 AMG, C63 AMG
• Years: 2001-2014
• Notes: The C-Class is one of the most common Mercedes-Benz models to experience the P0705 code due to the widespread use of automatic transmissions in these vehicles.

9.2. E-Class

• Models: E320, E350, E500, E550, E55 AMG, E63 AMG
• Years: 2003-2016
• Notes: The E-Class, known for its luxury and performance, is also susceptible to the P0705 code, especially in models with higher mileage.

9.3. S-Class

• Models: S430, S500, S550, S600, S63 AMG, S65 AMG
• Years: 2000-2013
• Notes: Although less common than the C-Class and E-Class, the S-Class can also experience the P0705 code, particularly in older models.

9.4. CLK-Class

• Models: CLK320, CLK350, CLK500, CLK550, CLK55 AMG, CLK63 AMG
• Years: 2003-2009
• Notes: The CLK-Class, a popular coupe and convertible, can also be affected by the P0705 code, especially in models with automatic transmissions.

9.5. ML-Class (now GLE-Class)

• Models: ML320, ML350, ML430, ML500, ML55 AMG, ML63 AMG
• Years: 1998-2011
• Notes: The ML-Class, a mid-size SUV, can also experience the P0705 code, particularly in older models with high mileage.

9.6. Other Models

• SLK-Class: SLK230, SLK320, SLK350, SLK32 AMG, SLK55 AMG (2000-2016)
• CLS-Class: CLS500, CLS550, CLS55 AMG, CLS63 AMG (2006-2017)
• R-Class: R350, R500, R63 AMG (2006-2013)
• G-Class: G500, G55 AMG, G63 AMG (2003-2