On certain vehicles, if you spill liquid on the rear seat, or drive through heavy rain or deep water, the gateway control module could be damaged. If this happens, the vehicle may enter emergency mode and suddenly lose power to the wheels.
A sudden loss of power to the wheels may increase the risk of a crash.
Audi will notify owners by mail and instruct you to take your vehicle to a dealer to install a protective cover on the gateway control module and seal an underbody seam.