Engine-CodesMercedes-Benz – P0735 Mercedes-Benz

P0735 Mercedes-Benz Code - Gear 5 Incorrect ratio

Quick Answer

The P0735 code for a Mercedes-Benz indicates that the transmission is detecting an incorrect gear ratio in the fifth gear. Common causes include Low transmission fluid level, Faulty transmission solenoid, Worn clutch components. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0735 Mercedes-Benz indicates Gear 5 Incorrect ratio.
Common causes
Common causes include Low transmission fluid level, Faulty transmission solenoid, Worn clutch components.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0735 Mercedes-Benz Description

The P0735 code for a Mercedes-Benz indicates that the transmission is detecting an incorrect gear ratio in the fifth gear. This means that the transmission is not shifting properly into fifth gear, which can lead to a variety of performance issues. When the transmission is unable to shift into the correct gear, it can cause rough shifting, hesitation, decreased fuel efficiency, and overall poor driving performance.

OBDII Code P0735 Mercedes-Benz - Gear 5 Incorrect ratio
P0735 Mercedes-Benz Code - Gear 5 Incorrect ratio

Common Causes of P0735 Mercedes-Benz

  1. Low transmission fluid level
  2. Faulty transmission solenoid
  3. Worn clutch components
  4. Transmission control module issue
  5. Mechanical damage to the transmission gears

Symptoms of P0735 Mercedes-Benz

  1. Rough or delayed shifting into fifth gear
  2. Hesitation or slipping when accelerating in fifth gear
  3. Decreased fuel efficiency
  4. Check engine light illuminated
  5. Transmission overheating

How to Fix P0735 Mercedes-Benz

  1. Check and top up the transmission fluid level
  2. Inspect and replace any faulty transmission solenoids
  3. Replace worn clutch components
  4. Perform a transmission control module reset or reprogramming
  5. Inspect and repair any mechanical damage to the transmission gears

Cost to Fix P0735 Mercedes-Benz

The cost of repairing a P0735 code can vary depending on the specific cause and the extent of the damage. Generally, the cost of parts for this repair can range from $200 to $800, while labor costs can range from $300 to $1000. Overall, the total repair cost for this issue can range from $500 to $1800. It is important to note that these are rough estimates, and actual costs can vary based on the location, vehicle make and model, and the specific diagnosis and repair process required. It is advisable to consult with a qualified mechanic for a more accurate cost estimate.

Tech Notes for P0735 Mercedes-Benz

Start by inspecting the transmission fluid level and condition, and change fluid if necessary.

When is the Code Detected?

P0735 is detected when A/T cannot be shifted to the 5th gear position even if electrical circuit is good.

Need more information about the P0735 Mercedes-Benz code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0735 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0735 in a Mercedes-Benz related to Gear 5 Incorrect Ratio?

- Common symptoms include harsh shifting, delayed engagement when shifting into gear, and the transmission staying in one gear.

2. What are the possible causes of OBDII code P0735 in a Mercedes-Benz?

- The code P0735 can be triggered by issues such as a faulty transmission shift solenoid, low transmission fluid levels, or a malfunctioning transmission control module.

3. How can I diagnose the cause of OBDII code P0735 in my Mercedes-Benz?

- To diagnose the issue, it is recommended to perform a thorough inspection of the transmission components, check the transmission fluid level and condition, and use a scan tool to gather data from the vehicle's onboard computer.

4. Can driving with OBDII code P0735 in a Mercedes-Benz cause further damage?

- Continuing to drive with the code P0735 present may lead to further damage to the transmission components and should be addressed promptly to avoid costly repairs.

5. What are some repair tips for addressing OBDII code P0735 in a Mercedes-Benz?

- Repair tips may include checking and topping up transmission fluid levels, inspecting and potentially replacing the transmission shift solenoid, and resetting the transmission control module.

6. Is it possible to reset the OBDII code P0735 in a Mercedes-Benz without fixing the underlying issue?

- While clearing the code temporarily may be possible, it is crucial to address the root cause of the problem to prevent the code from reoccurring and to ensure the proper functioning of the transmission.

7. How much does it typically cost to repair OBDII code P0735 in a Mercedes-Benz?

- The cost of repairing the code P0735 can vary depending on the specific cause of the issue, but it is advisable to budget for diagnostic fees, parts replacement costs, and labor charges.

8. Can a DIY enthusiast fix OBDII code P0735 in a Mercedes-Benz, or is professional assistance recommended?

- While some basic inspections and maintenance tasks can be performed by DIY enthusiasts, diagnosing and repairing complex transmission issues like OBDII code P0735 may be best left to experienced professionals.

9. Are there any preventive measures to avoid encountering OBDII code P0735 in a Mercedes-Benz?

- Regularly checking and maintaining proper transmission fluid levels, promptly addressing any transmission issues, and following the manufacturer's recommended service intervals can help prevent OBDII code P0735 from occurring.

10. How long can I safely drive my Mercedes-Benz with OBDII code P0735 before getting it repaired?

- It is recommended to address the issue promptly to prevent further damage to the transmission. Continuing to drive with OBDII code P0735 present may lead to more significant and costly repairs in the future.

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