2004 Mercedes-Benz C230 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 Mercedes-Benz C230

2004 Mercedes-Benz C230 Problems

Camshaft Adjuster Solenoid Failure

The camshaft adjuster solenoid (which is related to the variable valve timing system) may fail or timing chain/balance shaft components may wear, resulting in illumination of the Check Engine Light and various drivability issues. Mercedes-Benz has released a service bulletin outlining specific repair instructions depending on fault codes stored.

Inside Grab Handles/Upholstery/Door Trim Panels May Delaminate

Inside grab handles, the upholstery on the center console cover, and door trim panels can delaminate. Most commonly replacement of the affected part is necessary.

Wire Connector on Transmission May Leak Fluid and Damage Control Module

The electrical connector at the automatic transmission may leak fluid. Over time leaking fluid could migrate through the wiring harness and damage the transmission control module. If that happens a new harness and control module may be necessary to correct the problem.

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2004 Mercedes-Benz C230 Questions

My key only locked/unlocked the doors from passenger door or trunk. Now it will only do it from the trunk, but when I turn the key now to start the car, the key won't turn in the ignition switch. What the hell? (1 answer)

what keeps current from flowing to the starter? (1 answer)

I need to replace the AC control module. What is the recommended procedure. (1 answer)

Some idiot has broken the knobs off the old unit so badly that new knobs will not repair the problem.
I have purchased a replacement module (used).
I need R&R instructions. This is a coupe.
Also have a Driver power door lock problem. Knob rattles and spins when pressing remote lock, but wi...

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2004 Mercedes-Benz C230 Recalls

One or More Seat Belts May Not Lock as Designed

Some seat belt buckles may have a burr on a metal component of the locking mechanism. This could prevent the seat belt from locking under certain conditions. In the event of a crash, the seat occupant may not be properly restrained, increasing the risk of injury. Dealers will replace the affected seat belts. This recall is expected to begin on December 22, 2003. The Mercedes-Benz recall number is 2003 120006.

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