Troubleshooting Procedure When Vehicle Power Does Not Turn on

TROUBLESHOOTING PROCEDURE WHEN VEHICLE POWER DOES NOT TURN ON

When the power does not turn ON, open and close the driver's door several times.
Then, check the communication between OSS-ECU and scan tool MB991958 and others as shown in the flowchart below. (OSS-ECU can communicate with the scan tool MB991958 even when the power supply is OFF.)