Four problems related to electrical system have been reported for the 1998 Mercedes Benz ML320. The most recently reported issues are listed below.
My battery was low and unknown to me the Ml320 for this year loses its transponder codes in the das security module when you try to start the vehicle with a low battery. This is evidentally the third key that has lost its programming on my vehicle due to low battery voltage. Cost so far is 499 for a key, weeks waiting for the key from germany, and 300 to program it once they recieve the key. Its a dealership only item so its very very costly. This is a known problem with mercades and checking the forums it seems that everyone that has 1998-2000 model mercades all lose their transponder codes between 129,000 and 132,000 miles no matter what. This is an obvious manufacturers defect and a known issue that should be paid for by mercades. I never had these issues with my two 2002 ml500's but I will never purchase another benz in my life.
On my mercedes Ml320, 1998 the key refuse to start the engine. I was told at plaza motors in st,. Louis mo. That the car did not recognize the key any more. Upon my research I found that it is common problem with the Ml320 series which is an engineering problem on the part of the manufacturer especially the earlier once 1998-2000 and it will cause $6700. 00 to fix. I will appreciate an investigation, it's so common that a lot of people are selling their cars because of this.
Was driving 70 mph on California freeway and vehicle stalled in the middle of traffic. Emergency flashers failed to work & had no brake lights. Radio was still working. Vehicle was towed to dealer & mechanic indicated that relay switch needed to be replaced. Having an engineer check vehicle over for cause of stalling. The dealer changed variety of switches and the problem was solved.
Consumer states vehicle stalled at highway speed. Vehicle had to be towed. Dealer stated that the electronic computer that controls the car was bad.