2007 Mercedes-Benz CL600

The 2007 Mercedes-Benz CL600 is a luxury coupe that delivers a blend of performance and comfort. The CL600 boasts a powerful 5.5L Twin-Turbocharged V12 engine producing 510 hp and 612 lb-ft of torque. Other engine options for this model year include a 5.0L V8 and a 6.2L V8 in the CL500 and CL63 AMG trims respectively. All engines were paired with a 5-speed automatic transmission. Owners appreciate the CL600’s luxurious interior, smooth ride, and powerful engine. However, the car is known for its complex systems, which can lead to high maintenance and repair costs.

Engine

5.5L Twin-Turbocharged V12 (M275)

• Coil Pack Failure
  • Description/Symptoms: Misfires, rough idling, check engine light. Commonly occurs due to heat and age.
  • Solution: Replace faulty coil pack.
  • Estimated Cost to Fix: $200 - $400+ per coil pack (depending on labor and parts).
  • Recalls: None Found
• ABC (Active Body Control) System Failure
  • Description/Symptoms: Suspension sagging, rough ride, ABC warning light illuminated.
  • Solution: Repair or replace faulty ABC components (pump, valve block, accumulators, struts).
  • Estimated Cost to Fix: $500 - $3000+ depending on the component and repair needed.
  • Recalls: None Found
• Turbocharger Issues
  • Description/Symptoms: Loss of power, hissing noises, oil leaks.
  • Solution: Repair or replace faulty turbocharger(s).
  • Estimated Cost to Fix: $2500 - $6000+ depending on the extent of the damage and labor costs.
  • Recalls: None Found
• Oil Leaks
  • Description/Symptoms: Visible oil leaks, low oil level, burning smell. Common leak points include valve cover gaskets and rear main seal.
  • Solution: Replace leaking gaskets and seals.
  • Estimated Cost to Fix: $200 - $1500+ depending on the location and severity of the leak.
  • Recalls: None Found

Transmission

5-Speed Automatic (722.9)

• Torque Converter Issues
  • Description/Symptoms: Shuddering during gear changes, slipping, or failure to engage gears.
  • Solution: Replace or rebuild the torque converter.
  • Estimated Cost to Fix: $1500 - $3000+
  • Recalls: None Found
• Valve Body Issues
  • Description/Symptoms: Harsh shifting, delayed engagement of gears, or transmission getting stuck in a gear.
  • Solution: Replace or rebuild the valve body.
  • Estimated Cost to Fix: $1000 - $2500+
  • Recalls: None Found

Suspension

• ABC (Active Body Control) System Failure
  • Description/Symptoms: Suspension sagging, uneven ride height, rough ride, ABC warning light illuminated.
  • Solution: Repair or replace faulty ABC components (pump, valve block, accumulators, struts).
  • Estimated Cost to Fix: $500 - $3000+ depending on the component and repair needed.
  • Recalls: None Found
• Air Strut Failure
  • Description/Symptoms: Leaking air struts, suspension sagging, particularly overnight, ride height malfunction.
  • Solution: Replace faulty air struts.
  • Estimated Cost to Fix: $800 - $2000+ per strut.
  • Recalls: None Found

Electrical

• EIS (Electronic Ignition Switch) Failure
  • Description/Symptoms: Key not recognized, difficulty starting the car, no response when key is inserted.
  • Solution: Replace the EIS module.
  • Estimated Cost to Fix: $800 - $1500+ (requires programming).
  • Recalls: None Found
• SAM (Signal Acquisition Module) Failure
  • Description/Symptoms: Malfunctioning lights, wipers, or other electrical components. Erratic behavior of electronic systems.
  • Solution: Replace the faulty SAM unit.
  • Estimated Cost to Fix: $500 - $1500+ (requires programming).
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Dead battery, car not starting after sitting for a short period.
  • Solution: Diagnose and repair the source of the drain (e.g., faulty module, aftermarket electronics).
  • Estimated Cost to Fix: $100 - $1000+ depending on the cause and complexity of the issue.
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Seat Control Module Failure
  • Description/Symptoms: Malfunctioning seat adjustments, inoperative seat heaters/coolers.
  • Solution: Replace the seat control module.
  • Estimated Cost to Fix: $400 - $1000+ (requires programming).
  • Recalls: None Found
• Sunroof Issues
  • Description/Symptoms: Sunroof not opening or closing properly, getting stuck, or making unusual noises.
  • Solution: Repair or replace the sunroof motor, tracks, or other components.
  • Estimated Cost to Fix: $300 - $1200+
  • Recalls: None Found

Summary

The 2007 Mercedes-Benz CL600, while luxurious and powerful, is prone to a number of issues, particularly within its engine, transmission, suspension, and electrical systems. Many of these issues stem from the car’s complex systems and age. Repairs can be costly due to the specialized parts and labor required. Potential buyers should be aware of these potential maintenance costs before purchasing. The severity of these issues ranges from minor inconveniences to major mechanical failures. Addressing them can range from a few hundred dollars to several thousand dollars depending on the problem and where the repairs are done.