Rear Differential Problems and Symptoms This DIY guide shows you how to replace the rear differential fluid in a Mercedes-Benz. Changing the differential fluid will help avoid costly differential repairs down the road. Some symptoms of a bad differential on a Mercedes-Benz are whining, rumbling, humming, growling, noise while turning, …
Read More »
Having problems with the air suspension on your Mercedes-Benz? Before replacing the compressor, verify that the compressor is actually the cause of the fault. Check the AIRMATIC fault codes, compressor power supply, fuse and relay, and inspect the system for air leaks. Our guide on testing AIRMATIC with an OBD …
Read More »
Step-by-step instructions on changing the oxygen (O2) sensor in your car. Is the check engine light on because of a bad oxygen sensor? You don’t have to spend your life savings replacing a defective O2 sensor. Here we will show you the steps to replace an oxygen sensor successfully. An …
Read More »
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 …
Read More »
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 …
Read More »
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 …
Read More »
These instructions will show you how to remove and replace the front lower ball joint on a Mercedes E-Class W211 or CLS W219. Before you begin, review the part numbers and tools needed. These instructions apply to Rear Wheel Drive models only. If you have a 4MATIC model, use the …
Read More »
Step-by-step instructions for replacing the lower forward control arm. Check out this article if you need to replace the front rearward control arm. Parts Needed This arm goes by three names: front lower forward control arm, thrust arm, or torque strut. Left Front Lower Forward Control Arm, RWD only: 2113304911 …
Read More »
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 …
Read More »
MB Medic Mercedes-Benz Repair Guides, Service, How To DIY