On certain plug-in hybrid (PHEV) models, a software problem in the electrical drive cooling circuit could cause the combustion engine not to start under certain conditions. If this happens, there could be a loss of power to the wheels.
Safety Risk
A loss of power to the wheels could increase the risk of a crash.
Corrective Actions
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.