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Pelican Technical Article:

Oil Level Sensor Replacement

Steve Vernon

Time:

1 hour1 hr

Tab:

$2 to $45

Talent:

**

Tools:

10mm socket

Applicable Models:

Mercedes-Benz 260E (1987-89)
Mercedes-Benz 300CE (1988-93)
Mercedes-Benz 300E (1986-93)
Mercedes-Benz 300TE (1988-92)
Mercedes-Benz E320 (1994-95)

Parts Required:

Oil level sensor

Hot Tip:

Use a large drip pan

Performance Gain:

Knowledge of oil level

Complementary Modification:

Oil and filter change

The oil level sending unit on the W124 is located on the left side of the oil pan. If your sensor needs replacement you can technically do it without draining the oil but it will be a little messy as oil is inside the sensor and will spill when you remove it. If you are close to an oil change you might consider changing the oil and filter at the same time.

You will need to safely raise and support the vehicle and remove the under engine tray. Please see our article on safely jacking up and supporting your Mercedes as well as removing the under body trays. Be sure to always wear safety glasses whenever you work under your car.

The oil level sensor (yellow arrow) is located on the left side of the oil pan just behind the oil drain plug (red arrow).
Figure 1

The oil level sensor (yellow arrow) is located on the left side of the oil pan just behind the oil drain plug (red arrow).

Begin by pulling the wire connector off from the sensor (red arrow).
Figure 2

Begin by pulling the wire connector off from the sensor (red arrow). It pulls straight back and off.

Use a 10mm socket and remove the two bolts (red arrows).
Figure 3

Use a 10mm socket and remove the two bolts (red arrows).

Tilt the sensor back and remove it from the oil pan.
Figure 4

Tilt the sensor back and remove it from the oil pan. The sensor (red arrow) sits down in the oil. If your oil is at the proper level it will be below the opening for the sensor. Always replace the O-ring (yellow arrow) for the sensor every time you remove it to help stop leaks.

Make sure the area around the sensor opening is clean and flat to facilitate a good seal and prevent leaks.
Figure 5

Make sure the area around the sensor opening is clean and flat to facilitate a good seal and prevent leaks. Installation is the reverse of removal.



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Page last updated: Fri 12/2/2016 02:59:29 AM