Cell Phone - Various Bluetooth(R) Issues
91 10 04February 12, 2010
2022689
Vehicle Information
Condition
Bluetooth(R), UHV Low (9W2), Various Complaints
The customer experiences concerns with the UHV-Low (9W2) system such as:
^ Unable to pair phone
^ Sporadically unable to pair phone
^ Calls are dropped sporadically
^ Audio streaming inoperative
^ Audio streaming quality including speaker crackling experienced
Technical Background
The concern can be caused by several factors such as:
^ Incompatible phone
^ Internal problems with phone
^ Cellular Provider network
^ Software in the UHV-Low module
Production Solution
Part number 1K8035730D released with updated software.
Service
The following is a list of items to check to determine whether the concern is related to the cell phone network, phone, or a vehicle system issue
Unable to pair phone:
^ Is the phone compatible? Check ElsaWeb for the latest UHV-Low Overview technical bulletin that contains the phone compatibility list.
^ Try to pair another phone to the system. If it is able to be paired, it is likely a phone issue.
^ Are you able to talk to the UHV-Low module through address word 77? If not, wiring needs to be checked before replacing the UHV-Low module.
Sporadically unable to pair phone:
^ Is the phone powered down periodically? A phone is similar to a computer. The phone operating system needs to be rebooted periodically.
^ Does the concern happen sporadically? If so, cycle the ignition key. Can the phone be paired? If so, replace the UHV-Low Module. This is a software concern with PN 1K8035730 + index B or C.
Calls are dropped sporadically:
^ Does this occur in a certain geographical area? If so, this is a problem with the cell phone network.
^ Is the phone software on the compatibility list? If not, this could be a phone software concern.
^ Are any DTC's present for the internal antenna that can not be erased in the UHV-Low module? If so, replace UHV-Low module.
Audio streaming inoperative:
^ Verify the radio is either a RNS-510 touch screen navigation radio or a RCD-510 Premium 8 touch screen radio.
^ Verify that the audio streaming option is turned on in the setup menu.
^ Is the phone compatible for audio streaming. Check ElsaWeb for the latest UHV-Low Overview technical bulletin that contains the phone compatibility list.
Tip:
It may take up to 70 seconds for audio streaming to start playing.
Audio streaming quality:
^ Verify the quality of A2DP files. Quality of the music can vary depending on file compression.
^ Does crackling heard through the speakers go away after a key cycle? If so, replace UHV-Low module.
Warranty
Required Parts and Tools
No Special Tools required.
Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal. Always check with your Parts Dept. and Repair Manuals for the latest information.