Mercedes-Benz CL600 Problems

RepairPal has identified the most common problems with the Mercedes-Benz CL600 as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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Known Problems

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.

CD changers, command units, voice control units, PSE units, and Tele Aid units are prone to failure, especially in early models.

Problems with the pneumatic system can cause closing assist and door lock issues.

The engine wiring can degrade because the insulating material falls off leaving the bare wire exposed. This can cause many problems depending on which wires are exposed and what they touch.

A door control module/actuator may fail. Our technicians recommend finding an expert to repair them. Taking the door trim panels off requires expert knowledge because they can break and the pieces are very expensive.

The door for the vanity mirror (or the frame for the door) can break; due to a redesign, the mirror "cassette" will need replacement.

The ESP and BAS warning lights may illuminate due to a failed brake light switch. Replacement of the failed switch should correct this concern.

Oil pressure switches leak and allow oil to migrate up through the wire harness, potentially damaging all the sensors that connect to the harness.

Due to wear of mechanical parts in the control head, the buttons on temperature control assemblies work erratically or not at all. These control heads need to be replaced for this concern or when the display screen starts to fade out.
Oil feed tubes break and fall into the crankcase (engine) and the tappet becomes noisy (ticking), resulting in degraded idle quality. Our technicians recommend replacing all of the tubes at the same time, broken or not.

Instrument cluster lenses break easily.

Window seals tend to develop leaks.
Cup holders break easily, especially if sticky liquids are spilled into the cup holder mechanism.
Glove box hinges, the center console armrest, and the cup holders break.