Diagnostic trouble code (DTC) information

Condition 

Diagnostic trouble code (DTC) CEM-1E05 is stored if the central electronic module (CEM) registers that communication with the additional heater is not operating 5 seconds after the ignition has been switched on.

Substitute Value 

None

Possible Source 

• Fault in the cable between the additional heater and the central electrical module (CEM)
• Defective communication device, additional heater
• Defective communication device, central electronic module (CEM)

Fault symptom[s] 

• The parking heater does not operate