2004 Mercedes-Benz S500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2004 Mercedes-Benz S500
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Never overpay. Check prices with our estimator
Our experts translate recalls into plain English
2004 Mercedes-Benz S500 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.
Problems with the pneumatic system can cause closing assist and door lock issues.
CD changers, command units, voice control units, PSE units, and Tele Aid units are prone to failure, especially in early models.
2004 Mercedes-Benz S500 Questionsreplace engine and transmission mounts and spark plugs (1 answer)
windows and sunroof would open when ignition off, alarm would go off when i locked doors Now the entire ignition system locked up. Key will not turn when in ignition switch, the automatic shift lever starter will not work no locks will work???
The cylinder on the 2004 Mercedes-benz driver side rear strut came off. Why? after checking the paasenger side they seem to be on very secure.My understanding is that this cylinder is for the leveling.
2004 Mercedes-Benz S500 RecallsIncorrect 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.
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 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.