Mercedes says it all with their own simple and elegant slogan: “The Best or Nothing.” These sophisticated models are sleek and stylish, and offer a smooth driving experience. But behind the mix of modern design with classic looks, Mercedes owners put performance above all else.

For all this impressive history and pedigree, it is still a car with its own unique upkeep requirements. One important issue not to be overlooked is if you discover strange or new sounds coming from the vehicle’s rear end. Although common in all cars, an issue with this component is dangerous because it can be difficult to spot on your own, and can lead to greater issues if not addressed.

The Rear Differential

Every car has a rear differential. It serves to split power coming out from the engine equally between the rear left and right tires. In your Mercedes, it is uncommon to hear clunking, grinding, or rattling sounds coming from this part of the car.

This is especially important to know about as a Mercedes owner because it is a part that often wears out, and potentially before your regular scheduled maintenance, requiring extra vigilance on the part of the owner.

There are many moving parts involved in a rear differential system, and they can vary even among vehicles of the same brand, making it a tricky at-home fix. Although this is a difficult problem to fix yourself, there are some signs that it is time to have your Mercedes looked at by a professional.

Besides making strange sounds, failure of the rear differential system can be spotted early if you notice a difference in handling, uneven wear on the rear tires, vibration as the car gains speed, dirty gear oil, and difficulty making turns.

With any luxury vehicle, your car will take care of you as long as you take care of your car. At the first notice of any of these problems, it is worth a check up before a small problem becomes a big (and expensive) one.

Common Rear-End Issues

With pinion gears, ring gears, sliding gears, axle shafts and flanges, there are plenty of moving parts involved to cause you trouble. Here are some common problems with the rear differential leading to failure:

  • Gear Corrosion: Gears operate by running a series of interlocking metal teeth across each other, inevitably leading to eventually corrosion. When these parts wear out, it can lead to dirty differential fluid and decreased transfer of power.
  • Fluids Leaking: As mentioned above, a big problem with the rear differential system is changes in fluid. This can be from leaking fluid or fluid becoming dirty over time. Each of these problems feeds into the others as the system overall loses performance and worn out parts put excess strain on those around them, causing the entire system to wear out prematurely.
  • Wheel Damage/Alignment: Besides transferring power correctly, the rear differential system is what allows the rear wheels to rotate separately. As the power becomes imbalanced due to corrosion or damaged parts, the wheels will begin to operate suboptimally, leading to issues with wheel misalignment, premature tire wear, and wheel bearing or suspension damage.

European Motor Works is Here for You and your Mercedes

Ideally, during routine maintenance and inspection, issues will be found far before it is a problem. With a drop in performance being the first sign Mercedes Rear Suspension Inspection of a potential problem, the good news is that this regular maintenance can easily stem the issue by spotting these small problems before they become big ones.

Bringing your Mercedes to a certified mechanic will ensure your rear differential system is operating smoothly and there are no leaks damaging your vehicle. At European Motor Works, we have you covered to make sure your Mercedes keeps running the way it was designed.

We specialize in European makes and are focused on the specific and unique needs these brands have. Your vehicle will be worked on by expert mechanics who know exactly what it takes to keep your luxury import in top condition.

With our 2-year/20,000 mile warranty, you can be confident that our work will be done right. Stop by our convenient San Francisco location to speak with a certified technician today. We look forward to your call or visit.

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