Unlock additional heater
This function is used to unlock the additional heater/parking heater.
The heater may lock for any of the following reasons:
The heater has failed to start after 3 starting attempts.
The same fault has been registered 3 times in succession.
The airbag control unit has registered a crash.
A component test has been carried out on the airbag control unit.
Test conditions:
Battery voltage above 12 V.
Ignition on, engine off.
Procedure:
Select the "Unlock additional heater" function.
Confirm with "OK" to unlock the heater.
A dialogue box shows whether the operation has succeeded or failed. Confirm with "OK".
Exit the function.
Check that no trouble codes are stored in the heater.
If the function fails, check the test conditions and repair any faults.