Mercedes-Benz Mercedes GLK 2008-2015 Drivetrain Specifications

The 2008-2015 Mercedes GLK features a 4MATIC all-wheel-drive system as standard, providing excellent traction and stability. The drivetrain includes a 7-speed automatic transmission (7G-TRONIC) and a permanent all-wheel-drive system with a 45:55 front-to-rear torque distribution. The system is compatible with both gasoline and diesel engines, including the GLK 250, GLK 300, and GLK 350 models. Always verify compatibility with your specific model year and engine type.

Regular maintenance for the GLK's drivetrain includes checking and replacing the transfer case fluid every 40,000-60,000 miles, inspecting the driveshaft and CV joints for wear, and ensuring the differential fluid is changed every 50,000 miles. Additionally, the 7G-TRONIC transmission fluid and filter should be replaced every 60,000-80,000 miles. Always follow the manufacturer's recommended service intervals to maintain optimal performance.

To replace drivetrain components, first, lift the vehicle securely and remove the underbody panels. For the driveshaft, disconnect it from the transmission and differential, then install the new one. For the transfer case, drain the fluid, remove the mounting bolts, and replace it with a new unit. Always torque bolts to factory specifications and refill fluids as recommended. Consult the service manual for detailed instructions.

If your GLK's drivetrain is making noise, start by inspecting the driveshaft, CV joints, and differential for wear or damage. Check for loose or worn mounts and ensure all fluids are at the correct levels. Common issues include worn U-joints or insufficient lubrication. If the noise persists, perform a diagnostic scan to identify any fault codes related to the drivetrain system.

To optimize drivetrain performance, ensure regular maintenance, including fluid changes and inspections. Use high-quality synthetic fluids for the transfer case and differential. Consider upgrading to performance driveshafts or differentials for enhanced durability. Additionally, ensure tires are properly inflated and aligned to reduce strain on the drivetrain. Avoid aggressive driving to prolong the life of drivetrain components.