• Get Your Mercedes Serviced for a Bad Transmission Mount in Mill Valley

    Posted on July 31, 2020 by masterwpuser
    Mercedes Bad Transmission Mount

    Mercedes models may experience transmission mount failure. This problem can negatively affect the way that your Mercedes performs and handles throughout your drive. Let’s take a closer look at bad transmission mounts and where to go for assistance with repairs.

    What is a transmission mount?

    Transmission mounts are used to support and stabilize the main engine driveshaft. The driveshaft is an extension of the crankshaft. It runs through the transmission and connects to the rear axle.

    The transmission mounts are made from metal. Attached are rubber blocks that are used to prevent vibrations and rattling. Mounts help to distribute the weight equally.

    When your Mercedes is running, it produces a large amount of vibrations. Over time, these vibrations can wear out the mounts, which leads to excessive vibrations that can often be felt on the passenger side of the vehicle.

    Besides stabilizing the main engine driveshaft, the transmission mount also keeps your transmission aligned. Proper alignment is critical, as improper alignment can cause damage to the transmission housing, driveshaft, and driveshaft coupling.

    Symptoms of a Bad Transmission Mount

    Transmission mounts help to reduce vibrations and noises. If one or more of the mounts fail, your ride will not be as smooth or quiet. If the broken mounts are not replaced, additional symptoms may develop.


    The mounts stabilize the engine driveshaft and help reduce vibrations. When one of them fails, the transmission will be able to shift positions. This leads to excessive shaking often while accelerating.


    The vibrations that are produced from broken transmission mounts cause strange noises. These loud noises are often heard during acceleration. Thumping noises are also common. They are produced as the driveshaft shifts up and down.

    A Bouncy Engine

    When a mount fails, the engine will be unstable. This can cause the engine to bounce.

    Chassis Flex

    Since the weight is no longer properly stabilized it can cause flexing of the car frame. This can cause the car to be hard to drive. It can also interfere with the way doors shut and seal.


    If your car rocks back and forth when you start it up, it could be a symptom of a damaged transmission mount. You may also experience a lurch when you turn the ignition off.

    Common Reasons for Transmission Mount Failure

    Transmission mounts do not last forever. The metal can crack and break from stress. The rubber blocks can dry out and deteriorate.

    Even if your car does not sustain a lot of body damage doesn’t mean the interior components weren’t damaged. The impact from the accident can crack the mounts. They may not fail right away. But over time you may experience failure.

    Improper installation is another reason for a bad transmission mount. When having your Mercedes serviced it is important to use a qualified service center. Using a less than qualified mechanic may result in improper installation.

    Fluid leaks are never a good thing. Fluid leaking on the transmission mounts can damage the metal and rubber. This can lead to premature failure.

    Road conditions play a large role in the condition of your car. Driving over rough roads and hitting potholes can cause a lot of damage to your car.

    Defective transmission mounts can come off the production line. It’s rare, but they are installed into your vehicle directly from the manufacturer. Always watch for service bulletins and recalls that may be related to your car. When there is a problem have the issue fixed right away.

    Driving with Broken Transmission Mounts

    Transmission mounts are designed to reduce noise and vibrations while holding the transmission in place. Broken mounts can allow excessive movement. This can cause damage to other components, wiring, and lines. In very rare instances, the transmission could “fall” causing excessive damage.

    Mercedes Bad Transmission Mount Fix

    Master’s will Replace your Transmission Mounts

    If you believe that the transmission mounts in your Mercedes are damaged or broken, come see the experts at Master’s European and Japanese Auto Repair. We will perform a diagnostic inspection to determine if they need to be replaced. We strive to provide excellent service and repairs. We will get you back on the road quickly and safely.

    Master’s European and Japanese Auto Repair proudly services the communities of Corte Madera, Larkspur, Sausalito, Tiburon, and Mill Valley, CA. Call us today to book your appointment at (415) 383-2382 or stop by and see us as 111 Camino Alto, Mill Valley.

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