Mercedes-Benz Mercedes CLK 2002-2009 Drivetrain Specifications

The 2002-2009 Mercedes CLK features a rear-wheel-drive (RWD) system with optional 4MATIC all-wheel drive (AWD) on certain models. The drivetrain includes a 5-speed automatic transmission, with a 6-speed manual available in select trims. The engine options range from 1.8L to 5.4L, producing 163 to 362 horsepower. The drivetrain is compatible with Mercedes-Benz-approved fluids and parts, ensuring optimal performance and longevity.

Regular maintenance for the CLK drivetrain includes inspecting and replacing transmission fluid every 40,000 to 60,000 miles, checking the differential fluid every 50,000 miles, and ensuring the driveshaft and U-joints are lubricated and free of wear. Additionally, inspect the AWD system components (if equipped) for proper function and alignment. Follow Mercedes-Benz service intervals outlined in the owner’s manual for best results.

To replace drivetrain components, first, secure the vehicle on a lift. For transmission replacement, disconnect the battery, remove the transmission mounts, and detach the driveshaft. For differential replacement, drain the fluid, remove the axle shafts, and unbolt the differential housing. Use OEM or equivalent parts and torque all bolts to manufacturer specifications. Reassemble in reverse order and refill with approved fluids.

Common issues include transmission slipping, fluid leaks, and unusual noises. For slipping, check fluid levels and condition. For leaks, inspect seals and gaskets. Unusual noises may indicate worn U-joints or differential issues. Use a diagnostic scanner to check for error codes and refer to the service manual for specific repair procedures. Regular inspections can prevent major failures.

To optimize performance, use high-quality synthetic transmission and differential fluids. Ensure regular maintenance and timely replacement of worn components. Consider upgrading to performance parts like a limited-slip differential for improved traction. Avoid aggressive driving and ensure proper alignment and tire pressure to reduce drivetrain stress and enhance longevity.