W209 (2003-2009)

Problem You adjust the seat using the power seat switch installed on the E or CLK class door, but the seat moves in the opposite direction. You try to slide the seat forward, but the seat moves backward. You try to slide the seat backward, and the seat slides forward. …

This repair guide will show you how to replace the sway bar bushings and sway bar links at the front of a Mercedes-Benz C-Class W203 or a CLK-Class W209. Mercedes-Benz sway bar bushings and links typically need replacement around 100,000 miles. As they wear and tear, they tend to cause …

Is your Mercedes-Benz greeting you with an “SOS TeleAid not Activated” or “SOS Defective Please Visit Workshop” warning on your Instrument Cluster? Many early Mercedes-Benz TeleAid systems relied on legacy cellular technology that is no longer supported in the United States. As a result, some vehicles may display TeleAid-related warnings …

You may have wondered why the “Battery protection: Convenience functions temporarily unavailable” warning came up. Your car may still start and drive normally. This warning will come up if you: Leave the car sitting for several days without starting it. Leave your radio or lights on with the engine off. …

Below, you will find step-by-step instructions with pictures on removing and installing a new engine oil sensor on a Mercedes-Benz engine. Part numbers related to the oil level sensor are shown below; there could be more. The oil level sensor (B40) measures the oil level, the oil temperature, and the …

This procedure applies to Mercedes-Benz models equipped with the 722.6 5 speed automatic transmission and a service dipstick tube. It does not apply to the 722.9 7 speed transmission, which uses a different fluid level procedure. If that is what you have, start with the 722.9 7G-Tronic problems and fluid …

Check the maintenance schedule for your specific model. Many Mercedes-Benz models in this range specify engine air filter replacement at about 40,000 miles or 4 years under normal conditions. Replace it sooner when driving in dusty conditions. There are two engine air filters on these models, and both sit on …

Step-by-step DIY instructions with pictures on replacing the Front Lower (Rearward) Control Arms with Bushings. These instructions apply to Rear Wheel Drive W211 E-Class and C219 CLS-Class models only. If the ball joint is the worn part rather than the arm, see our front lower ball joint guide; for the …

Step-by-step instructions on how to replace a bad door speaker or a blown door speaker in a Mercedes-Benz E-Class. If one of the speakers in your car has “blown,” it’s time to replace it. Do you have serious sound distortion when you play any music? Older speakers wear out and …