Mercedes Benz will be contacting the owners of certain 2019-2020 AMG G63 and G550 vehicles because they could contain a differential locking module control unit that does not meet the current production specifications.

According to the defect report, a resistor on the board could be affected by the sulfur fumes from the axle oil. If the resistor is impaired, the electrical current could increase and cause communications between the control unit and the locking actuator to be shut down. Both ESP and ABS system would be deactivated, increasing the risk of a crash under certain conditions. Drivers will be alerted of a problem through an illumined ABS and ESP message in the instrument panel.

Dealers will inspect the differential locking modules and replace them as necessary. The NHTSA Campaign Number for this recall is 20V-090.

Daimler has determined that certain 2017 Mercedes Benz Metris vans may have been manufactured with front axle bearing retaining rings that were not seated correctly. The retaining rings could extend from the steering knuckles allowing the wheel bearing to move out of position. The problem could result in an ABS sensing error warning on the instrument panel, unfamiliar brake noises, unpredictable drive-ability and the loss of a wheel.

Those receiving notices will be asked to return to their dealers to have the front axle wheel bearing retaining rings inspected and correctly positioned as necessary. Owners wanting more information about the defect can contact Daimler customer service at 1-877-762-8267.