2004 Mercedes-Benz S430 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2004 Mercedes-Benz S430
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2004 Mercedes-Benz S430 Problems
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.
CD changers, command units, voice control units, PSE units, and Tele Aid units are prone to failure, especially in early models.
The crankshaft position sensor may fail. Symptoms of this are: The engine will crank—but not start—especially when the engine is warm. The car may start again if it is left to cool off, but it may run roughly or have poor performance.
2004 Mercedes-Benz S430 Questions
LED Temp Gage "Outdoors" no longer lights up. Also the display panel / computer shows right side passenger headlight "not working," but it DOES!
2004 Mercedes-Benz S430 Recalls
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.
2004 Mercedes-Benz S430 Reviews
Have had the car for a couple years now and like it well enough. Solid feel on the road and responsive engine. Room for the biggest of people front and back. Quite at speed and a pleasure to drive. The only problems I have is with the heating and air conditioning unit. Currently not working properly and will need to have it checked AGAIN. Ever little service or problem costs you and that is a p...
Crap crap crap. this is the worst car I have ever owned. Every 3-4 months its another trip to repair shop. I think I have funded his new boat. Cranks sensor, SRS error, random noises in front suspension, a/c not working, sun roof error won't auto open/close. The list goes on and on. Never a MB again.
I purchased my 2004 S430 last year and I must say that the car has been in the shop more than in my garage. Major suspension problems. Replaced two struts and air pump already. Very sleek car...get tons of compliments. Be ready to spend a fortune even with warranty. Additoinal bells and gadgets that mercedes places on these cars are really not needed..just costs you extra money. Car not recomme...