Mercedes-Benz S430 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz S430

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Mercedes-Benz S430 Problems

Failed Valve Body in Transmission

The valve body mounted inside the transmission fails causing the transmission to fail to shift. The problem usually starts with a hard second to first downshift.

Poor AC performance Due to Evaporator Temperature Sensor Failure

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.

Airmatic Pump Motor May Fail Due to Sticking Relay

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.

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Mercedes-Benz S430 Questions

Car will not stop and I replaced rotars and pads 1 month ago . (1 answer)

The brakes feel like stepping on something solid. Car will not stop. Just started happening no warning.

What is the SR light on the dash panel mean (1 answer)

Also temperature gauge intermittent and the dash lights Flash like a short circuit

What causes the abs and esp light to come on allowing the car to only go 30mph? (1 answer)

Car was driving fine all of a sudden abs ESP light comes on and car starts to drive 2230 miles per hour revving at 3000 RPMs new brakes put on front never had problems like this before took it to a shop that says no signal is going to the transmission on the dash there is no indication of comfort...

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Mercedes-Benz S430 Recalls

Incorrect Software Calibration May Cause Fuel Pump to Remain Powered in a Collision

There is a faulty software calibration that affects several areas including shutting off the fuel supply in a collision. This could cause a fire hazard during an accident. Dealers will reprogram this software. The Mercedes-Benz recall number is 2008 070001. This recall began during August, 2008.

Mercedes 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.

Instrument Cluster Illumination May Fail

The instrument cluster illumination may fail. This may result in difficulty reading the gauges, indicators, and speedometer. Not being able to see the cluster may lead to an accident. Dealers will replace the instrument cluster modules. This recall started on September 29, 2006. 

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Mercedes-Benz S430 Reviews

Bought a 2001 S430 used. I've had four MBZ, 1979 240D, 1980 280SE, '82 380SEL. A 1983 380SL which I still have which has nearly 300,000 miles. The 2001 is pathetic. Repairs constantly, AC is intermittent (AZ weather!), electrical anomalies, and no door lock switch on the drivers door. Head rests that flip down and not up, trunk does not open with key fob, doors do not lock with key fob. Wind...
The worse car I have ever had. Don't buy from Drive Time Car Dealership because they scammed me with this car that I did not want and because I went in there alone I had no idea what to ask for. I'm a senior female and they took advantage of me.
What a crap. My 2005 MB S430 has 81K. I have had nothing but problems, one after the other. Instrument cluster and command & control had to be replaced three times. Transmission controller module needed to be replaced. Crankshaft sensor, fuel pump, AC blower motor and regulator, windshield wiper motor, etc. all needed to be replaced. Now the temp, clock and gear shift indicator went dead in the...

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