Reset service indicator - AP00.20-P-0042MCU

MODEL 451.3/4 

Fig 1: Identifying Push-button And Instrument Cluster

Courtesy of MERCEDES-BENZ USA

	Reset
1	Switch on ignition
2	Select service indicator in the multifunction display on the instrument cluster (A1)	Press button (1) on the instrument cluster (A1) twice within the first 4 seconds.
3	Switch off the ignition within approx. 10 s
4	Press button (1) on the instrument cluster (A1)
5	Switch on ignition and keep button (1) on the instrument cluster (A1) pressed further
6	Wait until the service indicator flashes and then jumps back to the "starting value"	The service indicator is reset.
7	Release button (1) and after this switch off the ignition