See also:

What to do if...
► The current transmission position cannot be displayed? The vehicle is located in an unrecognized region, is in a poor reception area, or the system is currently determining the position. ...

DTMF suffix dialing
DTMF suffix dialing can be used for gaining access to network services or for controlling devices, e.g., to make a remote inquiry of an answering machine. The DTMF code is needed for this purp ...

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, ...