2003 Mercedes-Benz S430 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Mercedes-Benz S430
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2003 Mercedes-Benz S430 ProblemsAirmatic Pump Motors May Fail Due to Sticking Relays
The relay which turns the airmatic suspension pump on may fail causing the pump to run continuously. This can result in failure of the pump motor or a dead battery as the pump motor will continue to run after the car is turned off. Also, Worn airmatic pump mount bushings can causes noises in the front axle while driving on bumpy roads or a buzzing noise while the pump is running.
The evaporator temperature sensor can fail, causing the AC compressor not to cycle. If the AC compressor does not turn on, the AC system will not blow cold air. If the compressor is stuck on, the air will be very cold at first, before warming up.
CD changers, command units, voice control units, PSE units, and Tele Aid units are prone to failure, especially in early models.
2003 Mercedes-Benz S430 Questionslow heat (1 answer)
no interior cabin heat
I havent drove my car in 2 days and when I went to drive it last night just as i pulled out AIRMATIC TOO LOW warning appeared. I pulled over and saw that my car was sitting in its tires. i turned around and parked it. This morning I go out to check things out when i opened my door I could hear th...
2003 Mercedes-Benz S430 RecallsMercedes Recalls Multiple 2000-2004 Vehicles Due to Leaking Active Body Control Hose
The hose may corrode due to extensive exposure to humidity. This may cause fluid leakage onto the catalytic converter. This would present a fire hazard. Dealers will a new high pressure distrution hose.
The trunk lid springs could fail in the closed position. If the trunk lid is manually lifted, it may not remain in the open position and could cause injury if it comes down unexpectedly. Dealers will replace both trunk lid springs to correct this concern. The Mercedes-Benz recall number is 2004 050015.