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georgeeight · 06-17-2004, 01:40 PM

According to the owners manual: Page 72

Automatic Locking Differential (ASD)

The automatic locking differtial is activated at a front-to-rear axle speed difference of 2km/h. The yellow function indicator lamp in the speedometer comes on.

The system will not be engaged at speeds over 35km/h.

Shutoff is at a vechicle speed above 38km/h at the latest. The function indicator lights up also at higher speeds, if a drive wheel starts spining (Warning against slippery road service). But the automatic locking differential will not engage.

Mine also comes on at around over 70mph and then goes off again when speed is reduced. So does that mean the 4 wheel drive will only work upto 35km/h and then disengage. Any idea's???

06-17-2004, 01:40 PM	#8 (permalink)
georgeeight BenzWorld Member Date registered: Jun 2004 Vehicle: 300TE 4matic - 300D Location: London - England Posts: 50	RE: 4Matic diagnosis - opinions please! According to the owners manual: Page 72 Automatic Locking Differential (ASD) The automatic locking differtial is activated at a front-to-rear axle speed difference of 2km/h. The yellow function indicator lamp in the speedometer comes on. The system will not be engaged at speeds over 35km/h. Shutoff is at a vechicle speed above 38km/h at the latest. The function indicator lights up also at higher speeds, if a drive wheel starts spining (Warning against slippery road service). But the automatic locking differential will not engage. Mine also comes on at around over 70mph and then goes off again when speed is reduced. So does that mean the 4 wheel drive will only work upto 35km/h and then disengage. Any idea's???