Antitheft System - False Horn Actuation Diagnostics

SI B 61 05 07
General Electrical Systems

July 2009
Technical Service

This Service Information bulletin supersedes SI B61 05 07 dated May 2007.

[NEW] designates changes to this revision

SUBJECT
Horn Sounds Without Being Actuated

MODEL
E70 (X5) with heated steering wheel (SA248)

SITUATION
The vehicle horn sounds continuously without being pressed.

CAUSE
Pinched wire between the airbag module and the steering wheel.

[NEW] CORRECTION
The problem has been integrated into ISTA diagnostics. Follow system-oriented diagnostics and the relevant test plan using the latest ISTA version.

[NEW] WARRANTY INFORMATION
For information only





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