Troubleshooting
18
Bluetooth
TM
Situation
Correction
No audio output through vehicle speakers
Check SES module jumper plug
Radio does not mute after placing a call
Check connections at rear of radio for Tel On and Tel Mute
signal. Verify that connectors and pins are properly seated.
Audio quality in vehicle may not sound very
good
Recode ULF Control Module.·
NOTE: Audio quality in
vehicle or at person being contacted, is dependent on the
quality and signal strength of the wireless service provider in
the area traveled.
Customer complains that the person being
contacted hears a "Buzzing" noise, at times
during their conversation or on voice mail
message that he/she has left.
Intermittently a "Buzzing" noise is noticeable to the person
being called from the vehicle. The "Buzzing" noise is a
result of the GSM signal being feedback through the micro-
phone, this usually occurs if the GSM phone is located too
close to the microphone. The customer should change the
location of where the phone is placed/stored.
Driver is told that the person being contact-
ed complains that there is an echo/reverber-
ation in the audio; person can hear his/her
voice back through the phone.
Audio volume in vehicle during a call may be a bit to loud,
causing the other person to hear his/her voice coming back
through the phone.
A second call is received while in a call, and
call cannot be accepted using MFL con-
trols.
Use handset to expect second call and place previous called
on hold. Call waiting is functional only via the handset.
The radio audio does not come back imme-
diately if the "other" person hangs up first.
It takes approximately 15 seconds for the ULF system to
recognize that the call was terminated from outside the
vehicle.If the call is terminated from outside the vehicle first,
the driver can depress the button on the steering wheel to
terminate the call from the vehicle and un-mute the radio
quicker.
Customer is not able to pair phone to sys-
tem, not able to locate ULF passkey/pass-
word reference card.
The "BluetoothTM Passkey" is identified on the label of the
ULF Control Module located in the rear of the vehicle.·
The "BluetoothTM Passkey" for the installed control module
can be obtained by connecting the DISPlus or GT1and
accessing the diagnostics for the ULF system:- select
"Diagnostic requests"- select "Bluetooth code"
Intermittently a popping noise is audible
through the vehicles speaker and there is
no BluetoothTM wireless communication
established between the ULF module and
the phone.
Vehicle and /or ULF Control Module are not correctly
coded.· Recode module and vehicle (refer to Coding ULF
Control Module to Vehicle)
E46 Only:After installation of ULF system
the speedometer and odometer do not
work.
Remove pin 7 & 8 from the 54-pin connector going to the
ULF Control Module. Refer to the E46 installation instruc-
tions.