AutoCodes – Mercedes-Benz – P0218 Mercedes-Benz

P0218 Mercedes-Benz Code - Transmission Over Temperature

Quick Answer

The flow of transmission fluid starts in the bottom pan and is drawn through the filter, control valve body assembly, transmission case and into the oil pump assembly. Common causes include Low transmission fluid level, Transmission cooling system concerns. 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: P0218 Mercedes-Benz indicates Transmission Over Temperature.
Common causes: Common causes include Low transmission fluid level, Transmission cooling system concerns.
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.

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Code Popularity 16,239

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 09, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0218 Mercedes-Benz Description

The flow of transmission fluid starts in the bottom pan and is drawn through the filter, control valve body assembly, transmission case and into the oil pump assembly. The oil pump assembly pressurizes the fluid and directs it to the pressure regulator valve where it becomes the main supply of fluid to the various components and hydraulic circuits in the transmission. Hot fluid exiting the torque converter flows through the converter clutch apply valve and into the transmission cooler lines to the oil cooler located in the vehicle radiator (and auxiliary cooler if equipped). From the cooler, fluid returns to cool and lubricate the front of the transmission. In forward drive ranges, D4 fluid from the manual valve is routed through an orificed cup plug in the rear of the transmission case to feed the rear lube fluid circuit.

OBDII Code P0218 Mercedes-Benz - Transmission Over Temperature - AutoCodes.com — P0218 Mercedes-Benz Code - Transmission Over Temperature

What does this mean?

What are the Possible Causes of the DTC P0218 Mercedes-Benz?

Low transmission fluid level
Transmission cooling system concerns

How to Fix the DTC P0218 Mercedes-Benz?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0218 Mercedes-Benz code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0218 Mercedes-Benz code?

Need more information on how to fix the P0218 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the 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 P0218 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0218 (Transmission Over Temperature) in a Mercedes-Benz?

The common symptoms include the transmission going into limp mode, illuminated warning lights on the dashboard, and possible overheating of the transmission fluid.

2. What are some possible causes of OBDII code P0218 in a Mercedes-Benz?

Potential causes of this code include low transmission fluid levels, a faulty transmission temperature sensor, a malfunctioning transmission control module, or issues with the wiring/connectors.

3. How can I diagnose the OBDII code P0218 in my Mercedes-Benz?

Diagnosing this code typically involves checking the transmission fluid level and condition, testing the transmission temperature sensor, inspecting the wiring for any damage, and using a diagnostic scanner to retrieve specific transmission data.

4. Can I continue driving my Mercedes-Benz with OBDII code P0218 present?

It is not recommended to drive your vehicle with this code present, as it can lead to further damage to the transmission. It's best to address the issue promptly to avoid potential costly repairs.

5. What are some repair tips for fixing OBDII code P0218 in a Mercedes-Benz?

Repair tips may include topping up the transmission fluid to the correct level, replacing the transmission temperature sensor if faulty, checking and repairing any damaged wiring/connectors, and performing a transmission fluid flush if necessary.

6. Is it necessary to visit a dealership or mechanic for OBDII code P0218 repair?

While it's possible to diagnose and repair this code yourself if you have the necessary tools and knowledge, seeking professional help from a dealership or qualified mechanic is advisable for accurate diagnosis and proper repair.

7. Can extreme weather conditions affect the likelihood of OBDII code P0218 occurring in a Mercedes-Benz?

Yes, extreme heat or driving conditions can potentially trigger the transmission to overheat, leading to the activation of code P0218. It's essential to maintain proper transmission fluid levels and ensure the cooling system is functioning optimally.

8. How can I prevent OBDII code P0218 from reoccurring in my Mercedes-Benz?

Regularly checking the transmission fluid level and condition, addressing any issues promptly, ensuring proper cooling system maintenance, and avoiding excessive towing or heavy loads can help prevent the reoccurrence of code P0218.

9. Is OBDII code P0218 a serious issue in a Mercedes-Benz?

Yes, code P0218 indicating transmission over temperature is a serious issue that should be addressed promptly to prevent further damage to the transmission system and ensure the safe operation of the vehicle.

10. Are there any recalls or technical service bulletins related to OBDII code P0218 in Mercedes-Benz vehicles?

It's recommended to check with authorized Mercedes-Benz dealerships or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to OBDII code P0218 specific to your vehicle model and year.