Volvo has announced a recall for a small number of vehicles in the United States due to an issue that could disable the ABS and ESC.
Official documentation of the recall reveals that a hydraulic unit of select Volvo hybrid models could have welding between the electric motor’s rotor shaft and the magnet package (armature) that can be partially or fully missing. This defect can result in a failure if magnet segments aren’t sufficiently welded and cause slip between the motor shaft and the magnet package.
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The issue is most likely to manifest itself in situations when high torque from the electric motor is requested. A failure could cause the brake booster to stop working and disable the ABS, the ESC, and all other hydraulic control functions, other than Volvo’s Electronic brake force distribution (EBD) system.
The electric motor is sourced from Continental, which was able to narrow down a small number of affected units based on their serial numbers. As such, Volvo only needs to recall nine vehicles in the United States.
Involved in the recall are select 2021 S90L models built between November 2, 2020 and December 12, 2020, 2020-2021 Volvo XC60 models built between June 14, 2019 and March 8, 2021, and 2020-2021 Volvo XC90 models produced between May 16, 2019 and November 27, 2020.
Volvo informed dealers of the recall on September 15 and will inform owners on November 12. To fix the issue, Volvo dealerships will simply replace the impacted hydraulic unit free of charge.
