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Positions of the service lever: 1–Normal working situation;
2–Situation at which diagnostics is made |
At key turn in the ignition lock in situation 2 the yellow control bulb on a speedometer and a yellow bulb of 4 MATIC on a combination of devices lights up. The yellow control bulb burns at movement if differential blocking is in addition connected to a drive of forward wheels. The differential is blocked until the car moves on a slippery covering.
Inclusion of a full drive of 4 MATIC depends on a carriageway condition.
If at the working engine the control lamp of 4 MATIC or together with a yellow control lamp on a speedometer lights up, means, in system of a full drive there is a malfunction. In this case move the service lever in a motor compartment to the right against the stop to situation 2. Thus the drive of the car will be made by only back wheels.
In the presence of malfunction in system of a full drive it is necessary to address on Mercedes-Benz service station.
At diagnostics of a full drive the service lever in a motor compartment should be established in situation 2. Thus the control bulb of a full drive is lit and at once dies away.
Time of diagnostics of a full drive should not exceed 15 minutes. |