Ignition Switch Problems of Mercedes Benz ML320

Mercedes Benz ML320 owners have reported 6 problems related to ignition switch (under the electrical system category). The most recently reported issues are listed below.

1 Ignition Switch problem of the 2001 Mercedes Benz ML320

Failure Date: 06/10/2009

My 2001 mercedes Ml320 SUV developed a defect in the ignition switch, whereby the key came out while the car was not in the park position. In June 2009, the car was parked in my driveway and ignition turned off. I didn't realize that the key came out when the car was in neutral instead of park. After a while the car rolled backwards and hit a neighbors car and the garage door opposite my driveway. I reported the incident to mercedes and the dealer said that the defect cannot be covered free by the manufacturer as the car was out of warranty. I paid almost $1000 to get the ignition switch defect fixed.

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2 Ignition Switch problem of the 2000 Mercedes Benz ML320

Failure Date: 03/01/2003

The ignition switch malfunctioned, which caused the vehicle to cut off, when the vehicle went over the slightest bump.

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3 Ignition Switch problem of the 2000 Mercedes Benz ML320

Failure Date: 06/19/2001

Submitted by counsel: steven d. Barnhart, Ford & barnhart, llp; 6111 peachtree dunwoody rd. , bldg. G, suite 100, atlanta, georgia, 30328; 404-237-2155, 404-352-0118. This problem is reportedly widespread among the m-class product lines. Specifically, the ignition/key contact design is such that the vehicle will turn itself off if the car hits a bump in the road. According to the dealer, this is attributable to additional weight created by the presence of other keys on the key chain. Additionally, if the key is merely tapped during operation of the vehicle, the vehicle will turn itself off, even with no other keys on the keychain. Shutdown can occur at any speed, and has occurred at normal roadway speeds.

4 Ignition Switch problem of the 1998 Mercedes Benz ML320

Failure Date: 06/11/2001

Ignition key did not work. Had to use spare key in order to turn vehicle on. Consumer states without warning, at startup, while stopped, or moving, vehicle will stall, consumer states if you have a spare key, sometimes it will work.

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5 Ignition Switch problem of the 1998 Mercedes Benz ML320

Failure Date: 10/01/1999

Key lock problems, would not start due to key problems, would not start because of fuel pump failures, would not start due to gas tank problems, door lock assemblies move up and down by themselves, latch on hatch door rattled, rear seat belts rattle, oil out light came on at random times, engine check light on, last the fly-by wire gas pedal went to the floor with sudden acceleration causing an accident of the vehicle with $14,000 damage.

6 Ignition Switch problem of the 1998 Mercedes Benz ML320

Ignition lock failed, enabling key to be removed from ignition while in drive gear.


Other Common Electrical System related problems of Mercedes Benz ML320



ML320 Service Bulletins
ML320 Safety Recalls
ML320 Defect Investigations