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Mercedes-Benz G 550 Recall 20V090: Stability and anti-lock brakes can shut off while driving

NHTSA campaign 20V090, reported February 14, 2020, 6,300 vehicles potentially affected.

What this recall means for you

An electrical resistor in the differential locking module may malfunction. This can interrupt communication between the control unit and the differential locking actuator, which may cause the Electronic Stability Program (ESP) and Anti-lock Brake System (ABS) to deactivate while you are driving.

If the stability control or anti-lock brakes turn off, the risk of a crash increases, because the vehicle loses assistance in keeping control during hard braking, slippery conditions, or emergency maneuvers.

Mercedes-Benz will notify owners, and authorized dealers will inspect the differential locking modules and replace them as needed, at no cost to you. Owners can contact Mercedes-Benz USA customer service at 1-800-367-6372 (recall number 2020070005), and you should check your VIN for any open recalls.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 20V090Mercedes-Benz USA, LLC.
Component
ELECTRONIC STABILITY CONTROL (ESC); POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
Problem
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2019-2020 G550 4MATIC and G63 AMG 4MATIC vehicles. An electrical resistor within the differential locking module may malfunction, interrupting communication between the control unit and the differential locking actuator, possibly resulting in the deactivation of the Electronic Stability Program (ESP) and Anti-lock Brake System (ABS) while driving.
Risk
Deactivation of the vehicle stability control system or anti-lock brakes may increase the risk of a crash.
Remedy
MBUSA will notify owners, and dealers will inspect the differential locking modules and replace them as necessary, free of charge. The recall began August 21, 2020. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2020070005.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Affected vehicles

Mercedes-Benz AMG G6320192020
Mercedes-Benz G 55020192020