See also:

Malfunction
Comfort Access may not function properly if it experiences interference from external sources such as mobile phones, metal objects, overhead power lines, transmission towers, etc. In this case, ...

Capacities
...

Switching the interior lamps on and off
Switching the interior lamps on and off Press the button. To switch off permanently: press the button for approx. 3 seconds. To clear this setting: briefly press the button. ...