Mercedes-Benz has initiated a recall of exactly four vehicles in the U.S., each of which might have problems with a single brake caliper. That’s because the automaker’s supplier may have incorrectly torqued certain bolts.
The issue was first discovered when a single vehicle outside the U.S. went into its service center with brake issues and other owners complained of noises on the rear axle, prompting Mercedes to look at it. It discovered that the brake caliper housing bolts on the rear and front axles of affected vehicles did not meet torque specifications.
The caliper housings were part of a production batch from supplier Hitachi Astemo Poland. Parts from this batch are on a grand total of four vehicles in the U.S.; one 2020 Mercedes-AMG CLA 35 and three 2021 Mercedes GLA 250s.
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The loose bolts could potentially affect braking performance and consequently increase the risk of a crash. The parts may also come loose and dislodge from the vehicles, increasing the risk of an accident for following vehicles. Mercedes is not, however, aware of any cases in which parts have separated from the vehicle.
Owners should keep an ear out for noises coming from the axles and they should also get a “BRAKE” message in their instrument cluster if the issue presents itself.
Regardless of whether or not the owners notice the issue, Mercedes will reach out to all four of them asking them to take their vehicles into their local service center. There, a technician will inspect the vehicle and torque bolts to correct specifications where necessary. Owners can expect a message from Mercedes starting on May 3.
