2009 Mercedes-Benz CLK350
2009 Mercedes-Benz CLK350
Overview
The 2009 Mercedes-Benz CLK350, part of the C209 generation, is generally considered a reliable luxury coupe, blending performance with comfort. It was offered with a potent V6 engine and a smooth automatic transmission. While Mercedes-Benz vehicles are known for their sophisticated engineering, like any car, some specific areas may experience issues over time. This analysis focuses on documented common problems beyond routine maintenance, providing insights into potential repair costs and solutions for owners of this model year. Understanding these potential pitfalls can help in proactive maintenance and informed decision-making for prospective buyers and current owners.
Engine
3.5L V6 (M272)
Intake Manifold Runner Flap Failure
- Symptoms: Check engine light, rough idle, loss of power, P2004/P2005/P2006 error codes.
- Solution: Replacement of the intake manifold assembly or repair kit.
- Cost: $600 - $1200
Balance Shaft Gear Wear
- Symptoms: Check engine light, rough idle, P0016/P0017 error codes (crankshaft/camshaft position correlation).
- Solution: Replacement of the balance shaft sprocket and related timing components.
- Cost: $1500 - $3000+
Transmission
7G-TRONIC (722.9) Automatic
Valve Body Issues
- Symptoms: Harsh shifting, delayed engagement, slipping gears, transmission warning light.
- Solution: Repair or replacement of the valve body.
- Cost: $1000 - $2500
Torque Converter Problems
- Symptoms: Shuddering at low speeds, slipping, rough engagement.
- Solution: Replacement of the torque converter.
- Cost: $800 - $1800
Suspension
Standard Chassis
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Electrical
General Electrical System
SAM (Signal Acquisition Module) Failure
- Symptoms: Various electrical gremlins, non-functional lights, power windows, or other accessories.
- Solution: Repair or replacement of the SAM module.
- Cost: $500 - $1500
Window Regulator Failure
- Symptoms: Power windows not operating, slow movement, or falling into the door.
- Solution: Replacement of the window regulator and motor.
- Cost: $300 - $600
Exterior
Body and Trim
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Interior
Cabin Components
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Summary Verdict
The 2009 Mercedes-Benz CLK350 offers a compelling package for those seeking a stylish and performance-oriented luxury coupe. While generally reliable, potential owners should be aware of specific engine and transmission issues, particularly concerning the intake manifold runner flaps and balance shaft gear wear on the 3.5L V6, and valve body or torque converter problems with the 7G-TRONIC transmission. Electrical components like the SAM module and window regulators can also present issues. Addressing these potential problems proactively can ensure a more dependable ownership experience. Overall, with diligent maintenance and awareness of common failure points, the CLK350 can be a rewarding vehicle.