See also:

Rear window wiper and washer switch (Hardtop models)
WARNING In freezing temperatures the washer solution may freeze on the rear window glass and obscure your vision. Warm the rear window with the defroster before you wash the rear window. CAUTION ...

DVD (Digital Versatile Disc) player operation (models with navigation system)
Precautions Start the engine when using the DVD entertainment system. Movies will not be shown on the front display while the vehicle is in any drive position to reduce driver distraction. Audi ...

Clearing the programmed information
Individual buttons cannot be cleared. However, to clear all programming, press and hold the two outside buttons and release when the indicator light begins to flash (approximately 20 seconds). ...