Mercedes-Benz Tech Tip: Implausible Oil Level Messages

Mercedes-Benz Tech Tip: Implausible Oil Level Messages

You may encounter instances on any of the subject models where the engine oil level is OK, but the instrument cluster is displaying any one of the following three messages: oil level below minimum; oil level above maximum; or engine oil level - visit workshop.

You may encounter instances on any of the subject models where the engine oil level is OK, but the instrument cluster is displaying any one of the following three messages:

• Oil level below minimum;

• Oil level above maximum; or

• Engine oil level — visit workshop.

Affected Vehicles:
Models 129, 170, 202, 208, 210, 215 and 220 with M112, 113 or 137 engines.

Note: To avoid unnecessary replacements, perform the following steps before replacing the oil level sensor:

Service Procedure:
1. Check if the engine has the appropriate oil dipstick. Correct the oil dipstick if necessary. Disregard this step if the engine is not equipped with oil dipstick (i.e. 137 engine).

2. Check if the oil level is correct using the proper oil dipstick. Use DAS to check the oil level in engines without an oil dipstick. Correct the oil level if necessary.

3. Check if the correct oil data is stored in the instrument cluster.

Procedure for checking and correcting oil data:

a. Hook up the DAS.

b. Select vehicle mode.

c. Select instrument cluster.

If the oil data is incorrect, change the oil data in the instrument cluster by performing steps d-g.

d. Select control unit settings.

e. Select coding or variant coding.

f. Select engine or engine variant.

g. Save data.

4. Check for DTCs in the engine control unit. If an oil level sensor fault code has been stored, perform the following steps.

a. If three fault codes (P2039, P2040 and P2041) are stored in the engine control unit:

• The oil level sensor connector is plugged incorrectly or partially plugged. Correct the connection.

• The wiring harness is damaged (short circuit); replace it.

• The oil level sensor is defective; replace it.

b. If any one or two of the above-mentioned fault codes are stored in the engine control unit, replace the oil level sensor.

5. Check the oil level sensor (A004 153 53 28) for the production date. For oil level sensors with production dates up to and including 00W51, implausible over-filling warnings can occur when water temperature reaches 60 to 70° C. Oil level sensors with production dates of 00W52 and after are OK.

Note: If you encounter instances of leaky oil level sensors or oil pans on any of the subject models, check for leaks between the oil sensor and oil pan. Replace the seal, P/N A023 997 43 48, if it’s found to be damaged. Lightly oil the seal when installing it. Check the oil pan holes for rough or sharp edges. Remove them if any are found; or, if necessary, replace the oil pan.

For additional tech tips, visit www.identifix.com.

Technical service bulletin courtesy of IDENTIFIX.

You May Also Like

FCS Introduces 16 New Numbers

The new numbers cover some of the most popular applications on the road today, including the Jeep Compass, Lexus GX470, Mazda 3 and more.

FCS Automotive has announced the release of 16 new numbers including:

4 Air Spring to Coil Spring Conversion Kits (1,523,241 vehicle in operation)

1 Shock Absorber (1,225,184 vehicles in operation)

1 Suspension Strut (1,225,184 vehicles in operation)

10 Complete Strut Assemblies (3,368,969 vehicles in operation) 4 Shock Absorbers (3,553,593 vehicles in operation)

Maverick Tire Changer: Handling Large Custom Wheels

Large, custom 4×4 wheels are all the rage, and Hunter’s Maverick tire changer makes handling them a breeze.

Gen 1 Wheel Bearings

Removing and installing these bearings requires the correct tools and patience.

Introduction to the Maverick Tire Changer

Joe Keene speaks with Hunter Engineering service rep Rick Marzen on Hunter’s premium center-clamp Maverick tire changer.

Autel Energy Europe Releases MaxiCharger Launch Plan

Autel released the MaxiCharger Megawatt Charging System satellite launch plan at the Nordic EV Summit 2024.

Other Posts

RNR Tire Express Hosts Mother’s Day Giveaway

The eighth-annual event promises $100,000 in prizes, as well as a brand new 2024 Buick Encore for one select nominee.

Brand Refresh for Tires Plus, Hibdon Tires Plus Begins

Logo updates include a single-color tire mark; a logo palette comprised of Tires Plus yellow, black and red; and refined typefaces.

Schaeffler and Sustainability with Jerry Conroy

Conroy shares insights into his career trajectory, the evolving landscape of the company’s aftermarket operations, and more with Bill.

Flushing the Brake Fluid is Critical on Every Brake Repair

Making sure the brake fluid is the correct quality is critical. Sponsored by Auto Value and Bumper to Bumper.