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Mercedes-Benz CL600 Problems

Find the most common issues based on Mercedes-Benz CL600 owner complaints.
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Most Common Mercedes-Benz CL600 Problems

The active body control system can leak fluid from numerous areas, including the tandem pump, hydraulic lines, struts, and/or seals. If it is not repaired, the vehicle ride height could drop too lo...
Engine misfires (rough running) and lack of power are commonly caused by ignition coil pack or ignition module faults. Proper diagnoses should isolate the cause and prevent unnecessary replacement ...
A vibration felt through the center floor of the vehicle can be caused by cracked and/or shredded driveshaft flex discs, resulting in excessive driveshaft movement. If not repaired, damage to the...
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2 Known Mercedes-Benz CL600 Brakes Problems

Due to the size and material used on the brakes of these vehicles, the brakes may start to squeak around the 50 percent wear point. The brake rotor surfaces become uneven, causing a lip to form at...
The anti-lock brake system (ABS) modulator assembly may fail due to dirty brake fluid. Our technicians recommend a complete brake system flush every two years in order to help prevent this problem.

3 Known Mercedes-Benz CL600 Drive Train Problems

A vibration felt through the center floor of the vehicle can be caused by cracked and/or shredded driveshaft flex discs, resulting in excessive driveshaft movement. If not repaired, damage to the...
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 happe...
Leaks may develop from the differential cover and/or seals on high mileage or older vehicles. Our technicians recommend a complete reseal of the differential unit if these leaks are addressed.

6 Known Mercedes-Benz CL600 Electrical & Lights Problems

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 piece...
The ESP and BAS warning lights may illuminate due to a failed brake light switch. Replacement of the failed switch should correct this concern.
CD changers, command units, voice control units, PSE units, and Tele Aid units are prone to failure, especially in early models.

9 Known Mercedes-Benz CL600 Engine Problems

Engine misfires (rough running) and lack of power are commonly caused by ignition coil pack or ignition module faults. Proper diagnoses should isolate the cause and prevent unnecessary replacement ...
The engine oil coolers may leak; Our technicians tell us removal of the cylinder heads is required to correct this leak.
Oil pressure switches leak and allow oil to migrate up through the wire harness, potentially damaging all the sensors that connect to the harness.

0 Known Mercedes-Benz CL600 Exhaust & Emissions Problems

6 Known Mercedes-Benz CL600 Heating & Air Conditioning Problems

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 a...
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...
Other than a defective motor, a bad switch or blower motor resistor assembly can cause an inoperative heater blower motor.

0 Known Mercedes-Benz CL600 Maintenance Problems

12 Known Mercedes-Benz CL600 Miscellaneous Problems

The side window glass can delaminate. If this were to occur, replacement of the affected window would be necessary.
The center console armrest can break. Replacement is commonly the recommended repair.
The door for the vanity mirror (or the frame for the door) can break; due to a redesign, the mirror "cassette" will need replacement.

6 Known Mercedes-Benz CL600 Suspension & Steering Problems

The active body control system can leak fluid from numerous areas, including the tandem pump, hydraulic lines, struts, and/or seals. If it is not repaired, the vehicle ride height could drop too lo...
Front thrust arm and control arm bushings can crack and sometimes tear completely. If this is not repaired quickly, damage to the front subframe unit will occur, which is very expensive to repa...
Some models have tandem hydraulic pumps—one section for power steering and the other for suspension adjustment. These pumps are prone to leakage from either section.

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Known Mercedes-Benz CL600 Problems & Complaints

CD changers, command units, voice control units, PSE units, and Tele Aid units are prone to failure, especially in early models.
Front thrust arm and control arm bushings can crack and sometimes tear completely. If this is not repaired quickly, damage to the front subframe unit will occur, which is very expensive to repa...
Instrument cluster lenses break easily.
Glove box hinges, the center console armrest, and the cup holders break.
A cracked or broken heater core outlet housing can cause a coolant leak near the bulkhead (firewall). Our technicians remind us that coolant leaks should be repaired in order to avoid overheating ...
Problems with the pneumatic system can cause closing assist and door lock issues.
Some models have tandem hydraulic pumps—one section for power steering and the other for suspension adjustment. These pumps are prone to leakage from either section.
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 s...
The active body control system can leak fluid from numerous areas, including the tandem pump, hydraulic lines, struts, and/or seals. If it is not repaired, the vehicle ride height could drop too lo...
The head lamp wipers are easily damaged, especially by automatic car washes.
A faulty mass air flow (MAF) sensor can cause erratic/rough engine operation and fuel economy issues. Since this sensor measures the actual amount of air entering the motor, when it fails, the engi...
Other than a defective motor, a bad switch or blower motor resistor assembly can cause an inoperative heater blower motor.
Cup holders break easily, especially if sticky liquids are spilled into the cup holder mechanism.
One or more door windows may stop working due to a failed window regulator. Replacement of the failed regulator will be necessary to correct this concern.
Vehicles with automatic level control that ride harshly in the rear (no give in the suspension) may have one or both dampening actuators which have failed. It is commonly recommended the actuator...
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