Mercedes-Benz Common Problems
Have you ever wondered what are some of the most common problems with Mercedes-Benz cars? In this article, we will go over some of the problems that we see the most on Mercedes-Benz models such: as E, C, S, ML, SLK, CLK, CLS, GL, G Class.
List of the most common Mercedes-Benz problems.
One of the main challenges with Mercedes-Benz cars is rust. We still remember an older Mercedes-Benz 240D that had over 1 million miles still running strong but the floor had rusted out, and you can see the ground when sitting on the driver seat. The newer Mercedes-Benz models still have rust issues as well. Get a flashlight and carefully inspect the car. Look under the wheel wells and near the bumpers. Check the front fenders and the rear quarter panels. Once rust develops it is very expensive to repair. You should avoid cars that have rust.
One place that you should always check for rust is behind the license plate. Remove the license plate and inspect.
Check for rust at the bottom of the doors. This is another spot where you may notice rust problems.
Engine mounts on Mercedes-Benz cars are oil filled. Their main purpose is to keep the engine vibrations from being transmitted to the cabin. Because they are oil filled, around 100,000 miles, they start to fail and lose the oil. When the engine mounts fail you may notice excessive vibration on the seat, in the cabin, and even on the steering wheel. The price of the engine mounts is reasonable when you buy the parts online. Replacing the motor mounts can take between 4 and 6 hours labor.
3 Suspension & Steering Components
Ball joints, sway bar link,control arm bushings on used Mercedes-Benz wear out much sooner than you would expect. This is based on our experience with used Mercedes-Benz. If you take a Mercedes-Benz for state inspection, it is very likely to fail due to suspension issues especially if the car has over 100k miles.
Window regulators do the hard work when you press the button to lower or close the windows. They do tend to fail more on Mercedes-Benz ML-Class and C-Class based on our experience. Window regulators don’t fail on Mercedes-Benz cars only. They are a common problem on BMW, Lexus, and Audi. Window regulators can easily be replaced. This is a DIY type of job if you have the patience. If you have a mechanic at your local auto repair shop change the window regulator expect to pay between $350-$500 and even more at your authorized Mercedes-Benz dealership.
The first Mercedes-Benz models that had air suspension were the S-Class W220 in 2000 and later the E-Class W211. The airmatic bags replaces the struts and shocks on your Mercedes-Benz. While it was an excellent feature added to some Mercedes-Benz models, but it was also prone to failure. In the early days, replacement parts were very expensive, but aftermarket parts are now readily available and at reasonable prices. Not all Mercedes-Benz cars are equipped with air suspension, so this doesn’t apply to all MB models. Air suspension components that fail the most are:
|Suspension Air Compressor And Relay|
|Air Suspension Strut / Bag|
Catalytic converters are prone to failure. We have seen a few Mercedes-Benz needing new catalytic converters at 60,000 miles. As the catalytic converter may become less effective or clogged, the oxygen sensors may trigger the check engine or service engine light. As the catalytic converter’s condition worsens you may also notice performance issues, misfire, and hesitation. Replacing the catalytic converter can be very expensive. Depending on the Mercedes-Benz model you may get quotes as high as $4000. If that is out of your budget, the alternative would be to install Universal Catalytic Converter. It costs a lot less but you will need an exhaust / muffler shop to weld it in place.
The 5-speed automatic transmission is a very well built and robust transmission. But a chain can be as long as its weakest link and that philosophy applies to Mercedes-Benz transmission. While the transmission in itself is bulletproof the13-pin connector and the valve body issues have caused a fair reputation damage to Mercedes-Benz. The good thing is that these repairs are relatively inexpensive and can be completed without removing the transmission.
8Check Engine Light
A very common problem is the check engine light coming on due to the gas cap not being tight enough. Next time you fill up your car with gas, make sure to tighten the gas cap or the service engine light may come on. If the check engine light comes on for other reasons you can use an OBD II scanner to read and erase the engine fault codes on your Mercedes-Benz. In the video below we show you how to Rear and Erase the fault Check Engine Fault Codes using one of Best Selling OBD-II scanners on Amazon and the more advanced Launch Creader OBD II scanner.