Defogger Problems of Mercedes Benz ML320

While driving the windshield will suddenly and totally fog in certain temperature and humidity conditions. This has happend several times while driving a warmed up vehicle at various traffic speeds. The defroster is unable to clear this even when it is anticipated and has forced us to roll side windows down and pull to the roadside at highway speeds. This appears to be a design flaw in the defroster because it will take at times 10 minutes to clear and it won't stop the process once it is started even when run at full force.

See all problems of the 1998 Mercedes Benz ML320 🔎.

Intermittently in cold temperatures when the defroster system is engaged it will disengage for a few seconds, then come back on. This reduces the driver's visibility and could cause an accident. Defroster system continuously does this until vehicle is turned off. This occurred on 3 separate occasions. Dealership serviced vehicle and replaced parts, but the problem still persists. In addition, consumer experienced fuel tank gauge shows only 3/4 full. Dealer stated that internal electrical fault in the fuel sending unit. Fuel sending unit replaced.

See all problems of the 2000 Mercedes Benz ML320 🔎.