A tiny door-lock switch is forcing Mercedes-Benz to recall over 311,000 vehicles in the United States. The recall, which affects a wide range of models from the 2019 to 2026 model years, is due to a faulty door-latch sensor that could prevent the car from recognizing an open door, leading to a potential roll-away hazard.
The issue arises when the door-latch microswitch, located inside the driver's door lock, fails after prolonged exposure to moisture. This can cause the vehicle to fail to automatically engage the electronic parking brake or Auto-Park feature, increasing the risk of a crash.
View Price on AmazonMercedes-Benz first became aware of the potential issue five years ago, but it wasn't until May 2025, when the company received a report from outside the US, that the full extent of the problem became clear. Additional testing and analysis revealed that condensation could form and reach the electrical contact surfaces on the door-latch microswitch, causing it to malfunction.
The recall affects various models, including the CLA-Class, A-Class, C-Class, CLE-Class, GLA-Class, GLB-Class, and GLC-Class. Mercedes-Benz has received 176 reports of failed microswitches in the US, but none have resulted in a vehicle roll-away situation.
To correct the fault, dealers will install a new driver door lock. Owner notification is set for September 18, 2026. In the meantime, owners can contact Mercedes-Benz customer service for more information.
Source: roadandtrack.com
