This function is used to restore the counter for calculating additive level in the reservoir. The function shall only be done after replacement or filling additive reservoir according to service instructions for the car. Only change to reservoir of same volume.
Test conditions:
Ignition on, engine off.
All power consumers disconnected.
Battery voltage above 12V.
Additive reservoir replaced or filled.
Procedure:
Start the function.
Follow the instructions in the programme.
Finish and disconnect the diagnostics unit.
The function is done.
If the function failed, check test conditions and resolve any error codes.