Testing oil level sensor - RA18001043320X(18-3320)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Operation no. of operation texts and work units or standard texts and flat rates:

Fig 1: Testing Oil Level Sensor

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IF FOLLOWING PROBLEMS EXIST

A: Key in position "2"	indicator lamp (e) does not come on.
B: Engine oil level "max" and engine running	indicator lamp (e) comes on and remains on.
C: Engine oil level "max" and engine running	indicator lamp (e) comes on intermittently.

TEST DATA

Resistance of oil level sensor at "max" oil level	< 0.10 Ω
Resistance of oil level sensor at "min" oil level	∞ Ω

TEST CONDITIONS

Engine oil temperature	> 60 °C
Battery voltage	12 V

Special tool

Fig 2: Identifying Special Tool (201 589 00 99 00)

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COMMERCIALLY AVAILABLE TOOLS AND TESTERS

Designation	e.g. make, order no.
Multimeter	e.g. Sun DMM-5

Test in the case of problem "A"

Indicator lamp (e) does not come on when key in position "2" (requirement: voltage supply exists at instrument cluster).

Fig 3: Voltage Supply Flow Chart

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Test in the case of problem "B"

When engine oil at "max" level and engine running, indicator lamp (e) comes on and remains on.

Fig 4: Oil Level Flow Chart

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 5: Testing Oil Level Sensor (1 Of 3)

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Test in the case of problem "C"

Fig 6: Testing Oil Level Sensor (2 Of 3)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 7: Testing Oil Level Sensor (3 Of 3)

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Indicator lamp (e) comes on intermittently when engine running and oil at correct level.

Fig 8: Oil Level Flow Chart

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.