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Problems for specific Mercedes-Benz SL550 years:

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Most reported Mercedes-Benz SL550 problems

 

Verified for the Mercedes-Benz SL550

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 low and cause damage to the undercarriage.

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Verified for the Mercedes-Benz SL550

Leaks in the pneumatic system will cause problems with the dynamic seats and the trunk and/or door closing assist.

11 Reports
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Verified for the Mercedes-Benz SL550

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.

8 Reports
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Verified for the Mercedes-Benz SL550

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 outer edge of the rotor. Because of this, the rotors are usually replaced when the pads are worn (pad life varies depending on driving style and terrain).

5 Reports
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Verified for the Mercedes-Benz SL550

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

5 Reports
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Verified for the Mercedes-Benz SL550
On higher mileage vehicles, wear causes noise at the vario roof seals. Lubricating the seals can usually cure the problem; in most cases, the seals do not need replacement.
4 Reports
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Verified for the Mercedes-Benz SL550

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 air will be very cold at first, before warming up.

4 Reports
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Verified for the Mercedes-Benz SL550

The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.

4 Reports
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Verified for the Mercedes-Benz SL550

The early versions of the central gateway module (which allows different systems to communicate with each other) have software problems.

3 Reports
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Verified for the Mercedes-Benz SL550

It is not uncommon to encounter premature failure of the anti-lock brake system (ABS) modulator assembly due to dirty brake fluid. Our technicians recommend flushing the brake fluid every two years in order to help prevent this problem.

3 Reports
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Verified for the Mercedes-Benz SL550

High mileage or older vehicles commonly develop leaks from the differential seals and/or cover. Our technicians recommend a complete reseal of the differential unit whenever these leaks are repaired.

3 Reports
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Verified for the Mercedes-Benz SL550

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 repair. Updated control arms (that prevent damage to the subframe when the bushings wear out) are available.

3 Reports
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Verified for the Mercedes-Benz SL550

A vibration felt through the center floor of the vehicle can be caused by driveshaft flex discs, which crack and shred, causing excessive driveshaft movement. Not repairing these can cause damage to the driveshaft center support bearing, or, in the worst case scenario, damage to the transmission or differential.

3 Reports
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