BMW 2006 M5 - User Manual
A repair manual for BMW’s steering control system (SZL optical element) addresses critical failures in affected 5- and 6-Series vehicles (E60–E64 models from late 2005 to mid-2006), where the sensor’s malfunction disrupts multiple driver-assistance systems. The guide covers diagnostic identification, part replacement procedures–including careful handling of optical components and alignment requirements–and calibration steps for affected vehicle configurations. It also includes warranty reimbursement protocols, labor codes, and administrative workflows for BMW service centers.
Table of Contents:
- Page 1 – Technical Service Bulletin Scope and Vehicle Identification
- Page 2 – Part Numbers and Control Module Checking Procedure
- Page 3 – SZL Control Unit Removal and Workspace Preparation
- Page 4 – Optical Element Replacement Procedure
- Page 5 – Control Unit Reinstallation and Warranty Procedures
- Page 6 – Service Center Reimbursement Policies
This Service Information bulletin supersedes S.I. B34 05 06
dated August 2006.
PERFORM THE PROCEDURE OUTLINED IN THIS SERVICE INFORMATION ON ALL AFFECTED
VEHICLES THE NEXT TIME THEY ARE IN THE SHOP FOR MAINTENANCE OR REPAIRS AND
PRIOR TO RETAIL DELIVERY.
SUBJECT
Service Action: Replace SZL Optical Element
MODEL
E60, E61 (5 Series)
E63, E64 (6 Series)
SITUATION
The optical sensor in the SZL (Steering Column Switch Sensor) may fail.
A defective optical steering angle sensor leads to failure of Active Steering, DSC (Dynamic Stability Control), ARS
(Active Roll Stabilization), AHL (Adaptive Headlights), ACC (Active Cruise Control) and the automatic turn signal
reset function.
The failure of DSC, ARS and Active Steering is indicated by indicator lamps and display messages.
Note: One or more systems may fail, depending on the degree of damage to the optical steering angle sensor.
This Service Action checks the SZL and replaces the optical element if necessary.
A copy of the customer notification letter is attached.
To minimize the customer's inconvenience caused by this Service Action, pick- up (and deliver after repair) the
affected vehicle from customer's home and provide appropriate alternative transportation.
Customers will be impressed when you return their cars cleaned inside and out and with a full tank of gas.
Reimbursement information for the vehicle fueling and valet costs may be found in the Warranty portion of this
bulletin.
AFFECTED VEHICLES
This Service Action involves E60, E61 (5 Series), E63, E64 (6 Series) vehicles, which were produced from August 26,
2005 to July 28, 2006.
In order to determine if a specific vehicle is affected by this Service Action, it will be necessary to utilize the "Service
Menu" of the DCS (Dealer Communication System). Based on the response of the system, either proceed with the
corrective action or take no further action.
The Chassis Number Ranges listed below are
only
for informational purposes and are not to be considered as the only
deciding factor.
SI B34 05 06
Brakes
September 2006
Technical Service
Model
Chassis Number Range
Page 1 of 6
10/3/2006
http://www.bmwtis.com/tsb/bulletins/bulletin_graphic_temp/B340506g.htm
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About this manual
- Brand
- BMW
- Model
- 2006 M5
- Document type
- User Manual
- Language(s)
- English
- Pages
- 6
- File size
- 126 KB
- Format
Summary
Instructions for replacing the SZL optical element in specified BMW 5 and 6 Series vehicles produced between August 2005 and July 2006. Failure of this sensor affects Active Steering, DSC, ARS, AHL, and ACC systems. Guidance on vehicle identification using the DCS system is provided.
Listing of part numbers for various BMW models and the procedure for checking the SZL control module, including steering wheel positioning and necessary repair steps.
Instructions for verifying and removing the SZL control unit, checking for matching part numbers and modification indices, removing the slip ring, and preparing a clean, anti-static workspace for repair.
