Cell Phone - Poor Voice Quality On Receiving End

SI B 84 13 08
Communication Systems

December 2008
Technical Service

SUBJECT
Poor Voice Quality on the Receiving End When Placing a Telephone Call

MODEL
E86 (Z4 Coupe) from 3/2008 vehicle production

Vehicles equipped with ZPP (Premium Package) or SA639 (BMW Assist)

SITUATION
The customer complains of poor voice quality at the receiving end when making a telephone call.

CAUSE
TCU (Telematics Control Unit) software error

PROCEDURE
On a customer complain basis, perform the "TCU audio correction" conversion, using Programming/Coding software ISTA/P V2.32.0 or higher.

For information on programming and coding with ISTA/P, refer to CenterNet - Aftersales Portal - Service-Workshop Technology-Vehicle Programming.





WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.





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