Cluster displays "Low Range" Warning lamp

Josep Technical Support Specialist Commack, New York Posted   Edited  
Resource
Drivetrain
2005 Mercedes-Benz ML350 3.7L 5-spd (722.6)
P1831 Positioner Motor
Position Sensor Or Power Supply Is Faulty

Possible causes 

1. Loss of communication between transfer case module and shift motor sensor.

Do not install new transfer case motor

REPAIR STEPS

  1. Confirm fault code and clear
  2. Start vehicle.
  3. Shift into neutral
  4. Press LOW RANGE switch and apply brake
  5. Once transfer case motor has cycled, press LOW RANGE switch once more.

Warning lamp should go out.

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