The ventilation fan and electrically heated rear window do not start until 20 s after the ignition has been turned on
Read the instructions below then start the fault diagnostic procedure.
Symptom: The ventilation fan and electrically heated rear window do not start until 20 s after the ignition has been turned on
| The ventilation fan and electrically heated rear window do not start until 20 s after the ignition has been turned on |
Fault symptoms
The ventilation fan and electrically heated rear window do not start until 20 s after the ignition has been turned onDiagnostic help
Ignition +54 can be read in DICE using the diagnostic tool.If +54 is missing when +15 is present, the bus message Ignition +54 ON will be generated after 20 s.
The ACC uses the bus message Ignition +54 to disengage the ventilation fan while the engine is being started.
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