Audio System - AM Band Distortion/Audio Clipping
SI M65 03 02Sound System, Cruise, Alarms, Monitors
March 2003
Service Engineering
SUBJECT
Business CD53 Radio Has Distortion When In AM Band
MODEL
R50, R53 with Business CD53 Radio From start of production up to September 2002
SITUATION
Vehicles with Business CD53 radio have distortion (audio clipping) that is particularly noticeable on AM band "Talk" radio stations. Some customers may perceive this distortion as poor AM reception.
CAUSE
Software error in the Business CD53 radio.
CORRECTION
On a customer complaint only, install a replacement radio with revised software.
The P/N for these radios are unchanged, they are marked with a "green dot" on the radio and on the box.
PARTS INFORMATION
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.