1999 Mercedes Benz ML320: doors won't lock, open or latch

Filed Feb 21, 2010 · Locks, Transmission · 1 miles · NJ

I have 2 complaints against mercedes ml320 SUV. 1) with ignition off and key removed, the transmission shifter can be shifted to neutral and the truck starts to roll. It posts extreme danger to passengers, especially, kids left in a parked vehicle, as well as pedestrians in front or behind the vehicle, especially those standing in between this vehicle and another parked vehicle on a slope. 2) the well known power lock failure causes the manually locked doors (including child proof rear door locks) to be unlocked automatically whenever the vehicle starts in motion from full stop. It is due to the auto-lock feature which attempts to lock all doors when the vehicle starts to move from full stop (e.g stopping for red light). However, due to power lock failure, it cannot lock all the doors after 4-5 times and eventually unlocks all doors. This left children in the rear in danger of opening the doors while the vehicle is in motion. This problem happened to me twice; one at 9700 miles in 2001 and at 70,000 miles in 2007. I had written a letter to mercedes benz USA to complaint about the power lock and they just denied that it is a defect.

Filed Jan 23, 2003 · Transmission · IL

Consumer states that she has several complaints about her mercedes benz truck, one being that the truck will not hold an alignment, which causes her tires to wear out fast. Second one is that the door lock regulator does not work and the third is the power steering failure. It failed at 24,000 miles causing it to become impossible to steer the truck. She also says that the truck leaks power steering fluid. Ts

Filed Oct 22, 2002 · Body · SC

The door lock on this vehicle is malfunctioning again. It was repaired while the vehicle was under warranty but it has failed again with exactly the same symptoms. The dealer and the manufacturer will not commit to repair this without charging me. This is a common problem for mercedes ml320's as evidenced by information on mercedes discussion web pages. This is a safety issue because the door could open in an accident. Dt

Filed Oct 9, 2002 · Locks · MD

Consumer notice after making a stop vehicle power door locks pulsate up and down soon after door locks will unlock. Dealer has been contacted cannot duplicate problem. Please provide further information. Mr

Filed Feb 20, 2000 · Engine · NC

Engine has died four times while driving. Dealer has tried to repair the engine twice but has failed. Door locks do not lock when using key fob or the lock button. Rather, they pop up and down.