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, open or close the vehicle using the buttons on the remote control or use the integrated key in the door lock.
See also:
Functional readiness of the airbagsystem
When the ignition is switch on,
the warning
lamp in the instrument cluster lights
up briefly and thereby indicates the operational
readiness of the entire airbag system
and the belt tensioner.
...
Switching the microphone to mute
When a call is active, the microphone can be
muted.
1. "Telephone"
2. "Active calls"
3. "Microphone mute"
A microphone that has been switched to mute
is automatic ...
Tire inflation pressures X5 xDrive50i with two rows of seats
...