21
Problem
Corrective Action
Audible noise or static
is heard during a call.
Placement of phone can affect
both cellular and Bluetooth
reception. Please relocate
handset within vehicle.
Microphone in vehicle is sensitive
to outside noises such as wind.
Raising vehicle windows and/or
closing moon roof can improve
sound quality.
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“No Network” is
displayed in vehicle
interface.
The handset may not have
service. Please try again in
an area with better signal.
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BTUM LED flashing
very rapidly and/or
erratic phone system
behavior.
Potential error with your BTUM
or vehicle phone system.
Please hold down Push button
on BTUM for greater than 30
seconds (LED will begin flashing
very rapidly). BTUM will reset and
normal operation should resume.
Please shut vehicle OFF,
remove BTUM for approximately
1 minute and re-insert BTUM
into eject box.
If problem persists, please
contact your BMW center.
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