Rectifying problems with the auxiliary warm-air heater
The message ERROR appears on the switch clock's display.
Possible cause:
A malfunction has occurred.
Have the auxiliary heating checked at a qualified specialist workshop.
The message INIT appears on the switch clock's display.
Possible cause:
The power supply has been interrupted. All saved settings have been deleted.
Automatic hardware detection is currently active.
When automatic hardware detection is complete, set the day of the week, time and operating duration More.
Set the departure time More.
Auxiliary heating automatically switches off and/or cannot be switched on.
Possible cause:
The undervoltage protection system integrated in the control unit is switching the auxiliary heating off as the on-board electrical system voltage is below 10 V.
Have the alternator and the battery checked.
Possible cause:
The electrical fuse has blown.
Replace the electrical fuse; see "Fuse assignment" supplement.
Have the cause of the faulty fuse investigated at a qualified specialist workshop.
The hot-air auxiliary heater has overheated
Possible cause:
The air ducts are clogged.
Ensure that the flow of hot air is not blocked.
Have the auxiliary heating checked at a qualified specialist workshop.