The official notice
Defect
On certain vehicles, the radiator may not be attached correctly. As a result, a coolant hose could be damaged by contact with the serpentine belt pulley and create a coolant leak. If this happens, coolant could spill onto the road and cause a red warning light to turn on in the instrument cluster. If you ignore the warning light and continue driving, the engine could overheat.
Safety Risk
A coolant leak could create a hazard for other road users. Additionally, an engine that overheats could create the risk of a fire.
Remedy
Volkswagen will notify owners by mail and instruct you to take your vehicle to a dealership to ensure that the radiator is attached correctly. If it is loose, the coolant hose and serpentine belt will also be checked for damage, and replaced if necessary.