See also:

How to change the set distance to thevehicle ahead
The distance to the vehicle ahead can be selected at any time depending on the traffic conditions. Each time the distance switch A is pushed, the set distance will change to long, average, short ...

Fuses
Engine compartment ...

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