CEM-8F18

Condition

The central electronic module checks the signal from the left Xenon lamp.

Diagnostic trouble code (DTC) CEM-8F18 is stored in the central electrical module if the central electronic module registers too high a signal from the left Xenon lamp.

Diagnostic trouble code (DTC) CEM-8F18 can be detected when the ignition is on for at least 10 seconds and the battery voltage is > 10.5 volts.

Substitute value

- None.

Possible source

- Short-circuit to supply voltage in the signal cable.
- Open-circuit in the signal cable.
- The actuator motor in the xenon lamp housing has jammed.
- Defective actuator motor in the xenon lamp housing.

Fault symptom[s]

- The low beam is constantly lit.
- The high beam is constantly lit.
- The road surface is not illuminated.