Mercedes-Benz has determined that there is a safety defect affecting over 24,000 Mercedes-Benz vehicles. The problem is related to an issue with the drive shaft universal joint. This part plays a critical role in how power is delivered to your wheels, and when it fails, the consequences can be serious.
What Vehicles Are Affected?
This recall (NHTSA Campaign Number: 26V-216) applies to select 2018–2020 Mercedes-Benz 4MATIC models, including:
- E-Class (Sedan, Wagon, Coupe, Cabriolet)
- S-Class (Sedan, Coupe, Convertible)
- Maybach S 560 4MATIC
Specifically, models like the E 400, E 450, S 450, S 560, and Maybach S 560 are included.
What’s the Problem?
Mercedes-Benz has identified that increased wear may occur in the universal joint (U-joint) on the drive shaft. This is due to insufficient production parameters from a supplier, which can lead to premature degradation over time.
The real issue begins when:
- The U-joint loses lubrication.
- Wear accelerates.
- The joint can fracture under load.
At that point, the connection between the transfer case and front axle transmission may fail entirely.
Why This Matters (Safety Risk)
If the universal joint fails, the vehicle can experience a sudden loss of propulsion—meaning it may stop delivering power to the wheels without warning.
That creates a dangerous situation:
- Loss of acceleration in traffic.
- Reduced ability to maneuver.
- Increased risk of a crash.
Mercedes-Benz notes that while some warning signs may appear, they are not guaranteed to be noticed before failure.
Warning Signs to Watch For
In some cases, drivers may notice early symptoms such as:
- Unusual noises from underneath the vehicle.
- Vibrations while driving, especially under acceleration.
However, these signs can be subtle—or completely absent—making this issue particularly concerning.
What Caused the Issue?
The root cause traces back to a supplier manufacturing process that did not meet optimal parameters. Over time, this can result in:
- Improper wear patterns.
- Reduced durability of the U-joint.
- Increased likelihood of failure under normal driving conditions.
What Mercedes-Benz Will Do
Mercedes-Benz dealers will:
- Inspect the drive shaft.
- Replace it if necessary.
- Perform all repairs free of charge.
This recall highlights how even a single component failure within the drivetrain can have major safety implications. If your vehicle is affected, it is worth addressing promptly—even if you have not noticed any symptoms. A quiet drivetrain today does not guarantee it will stay that way tomorrow. Owner notification letters are scheduled to be mailed beginning June 2, 2026.
