Mercedes-Benz W163 transfer case low range does not work
ML 270 CDI
W163 low range does not engage and the light flashes, what are the conditions?
Low range cannot be engaged unless the main transmission is in neutral (N). In addition, the engine must be running and the car stationary, the battery voltage must be fine and the brake pedal must be pressed.
What causes the W163 low range light to stay on and the gears to stay low?
The cause is often the electric motor of the transfer case reduction gear, not the transmission oil. Replacing it can fix the fault, and slipping that occurs when cold may stop at the same time. Have a workshop confirm the fault.
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