Mercedes manual service reset - part 2

This is second part of the manual reset, if you encounter this model of steering wheel (refer to above picture), then below are the manual service reset procedure.

1) Close vehicle front bonnet, rear boot and 4 doors. 

2) Switch on ignition to position 1

3) Switch until you see outside temperature for my case is "+28.5'C", after that press knob for 3 time continuously.

4) If you follow correctly then you will see battery voltage "UB:12.3v", press button located on left hand steering wheel will bring you to hidden menu, refer to below pic.

5) Select confirmation, and select full service. TADAAAA, your service mileage are now reset successfully.