Test point
Hall-effect sensor rear height adjustment, short circuit Fault code 15
This fault is stored in the following cases:
1. There is a short circuit in the wires to the Hall-effect sensor,
2. The Hall-effect sensor is faulty.
3. The control module is faulty. Elimination:
Disconnect plug from control module, check for continuity with
If a short circuit is found, check the sensor wires first.
If no fault is detected in the wire, replace the electric motor for
Once the cause of the fault has been found and eliminated, actuate the height adjustment switch. The text in the fault memory changes from present to not present if the cause of the fault has really
If the fault is still present, replace control module.
Test point 16
Lumbar pressure sensor
Fault code 18
This fault is stored in the following cases:
1. There is an open circuit in the wire to the lumbar pressure sensor.
2. The pressure sensor is faulty.
3. The control module is faulty, Elimination:
Check plug on control module for contact and damage Check wire to sensor for damage,
72 98 Diagnosis/troubleshooting, seat memory (System S 01)
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