2010 Mercedes-Benz CL600

The 2010 Mercedes-Benz CL600 is a luxury coupe known for its powerful engine, opulent interior, and advanced technology. The CL600 comes equipped with a 5.5-liter twin-turbocharged V12 engine producing 510 horsepower and 612 lb-ft of torque. Other engine options for the 2010 CL-Class include a 5.5-liter V8 in the CL550 and a 6.2-liter V8 in the CL63 AMG. All engines are paired with a 5-speed automatic transmission. Owners often praise the CL600 for its smooth ride, powerful acceleration, and luxurious features. However, common complaints include high maintenance costs, electrical issues, and complex systems that can be prone to failure.

Engine

5.5L Twin-Turbocharged V12 (M275)

• Oil Leaks
  • Description/Symptoms: Oil leaks are common from various locations on the engine, including valve cover gaskets, oil pan gasket, and turbocharger oil lines. Symptoms include visible oil leaks, burning oil smell, and low oil level.
  • Solution: Replacing the leaking gaskets or seals.
  • Estimated Cost to Fix: $300 - $2000+ depending on the location and severity of the leak.
  • Recalls: None Found
• Ignition Coil Failure
  • Description/Symptoms: Misfires, rough idle, loss of power, and check engine light illumination. Often caused by faulty ignition coils due to heat and age.
  • Solution: Replacing the faulty ignition coil(s).
  • Estimated Cost to Fix: $200 - $500+ per coil.
  • Recalls: None Found
• Turbocharger Issues
  • Description/Symptoms: Reduced boost pressure, whistling noises, oil leaks from the turbocharger, and loss of power. Can be caused by worn turbocharger seals, damaged impellers, or faulty wastegate actuators.
  • Solution: Rebuilding or replacing the turbocharger(s).
  • Estimated Cost to Fix: $2500 - $6000+ per turbocharger.
  • Recalls: None Found

Transmission

5-Speed Automatic (722.9)

• Valve Body Issues
  • Description/Symptoms: Harsh shifting, delayed engagement, slipping between gears, and general poor shift quality.
  • Solution: Replacing or rebuilding the valve body.
  • Estimated Cost to Fix: $800 - $2000+
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Shuddering or vibration at low speeds, stalling, and transmission slipping.
  • Solution: Replacing the torque converter.
  • Estimated Cost to Fix: $1500 - $3500+
  • Recalls: None Found

Suspension

• Airmatic Suspension Failure
  • Description/Symptoms: Vehicle sagging on one or more corners, excessively harsh ride, “Visit Workshop” message on the instrument cluster. Caused by leaks in the air struts, a faulty air compressor, or a defective valve block.
  • Solution: Replacing the leaking air struts, air compressor, or valve block.
  • Estimated Cost to Fix: $1000 - $3000+ per strut, $800 - $2000+ for the compressor, $500-$1200 for the valve block.
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Car not starting after sitting for a period of time, needing to jump-start the car, and frequent battery replacements. Caused by a parasitic drain from a faulty module or electrical component.
  • Solution: Diagnosing and repairing the source of the parasitic drain.
  • Estimated Cost to Fix: $200 - $1000+ depending on the complexity of the issue.
  • Recalls: None Found
• Electronic Control Unit (ECU) Failure
  • Description/Symptoms: Various electrical malfunctions, including engine performance issues, transmission problems, and malfunctioning accessories.
  • Solution: Replacing or reprogramming the ECU.
  • Estimated Cost to Fix: $1000 - $3000+
  • Recalls: None Found
• SAM (Signal Acquisition Module) Failure
  • Description/Symptoms: Electrical issues related to lighting, wipers, windows, locks, and other electrical systems.
  • Solution: Replacing the faulty SAM unit.
  • Estimated Cost to Fix: $500 - $1500+
  • Recalls: None Found

Exterior

• Sunroof Issues
  • Description/Symptoms: Sunroof not opening or closing properly, making unusual noises, or leaking water. Caused by broken tracks, a faulty motor, or clogged drain tubes.
  • Solution: Repairing or replacing the sunroof components.
  • Estimated Cost to Fix: $300 - $1500+
  • Recalls: None Found

Interior

• Navigation System/COMAND Failure
  • Description/Symptoms: The navigation system freezing, not loading maps, or displaying incorrect information. The COMAND system may also become unresponsive or display error messages.
  • Solution: Updating the software, replacing the COMAND unit, or repairing the navigation system components.
  • Estimated Cost to Fix: $300 - $2000+
  • Recalls: None Found

Summary

The 2010 Mercedes-Benz CL600, while a luxurious and powerful vehicle, is prone to several common issues. Engine oil leaks, ignition coil failures, and turbocharger problems are prevalent in the V12 engine. The transmission can suffer from valve body issues and torque converter failure. The Airmatic suspension is also a common source of trouble. Electrical problems like battery drains, ECU failures, and SAM failures are also relatively common. The cost to repair these issues can range from a few hundred dollars to several thousand dollars, making maintenance and repairs a significant expense for CL600 owners. While not all vehicles will experience all of these issues, it is important to be aware of them when considering purchasing or maintaining a 2010 CL600.