The official notice
Defect
On certain vehicles, a problem in the brake control module (BCM) could cause reduced braking. It could also cause different safety systems to stop working. This can include the antilock brake system (ABS), electronic stability control (ESC), traction control, adaptive cruise control (ACC), pilot assist and one pedal drive (OPD).
Safety Risk
Reduced braking can cause extended stopping distances and increase the risk of a crash. Additionally, vehicle safety systems that stop working suddenly could increase the risk of a crash.
Remedy
Volvo will notify owners in writing and send a wireless over-the-air update to each vehicle. If the update cannot be completed successfully, or for vehicles without over-the-air (OTA) update capability, Volvo will instruct you to schedule an appointment to have the update performed by a dealer.