Brakes/Computer Controls - Park Brake/Warning Symbols
90 11 03March 23, 2011
2025685 Supersedes T.B. V901102 dated Mar. 23, 2011 to revise supersession statement
Vehicle Information
Condition
Parking Brake Cannot be Switched OFF, Incorrect Symbols Displayed in MFI
After extended use of warning lights, the following may occur:
^ The symbol stays on after switching OFF the hazard warning lights
^ Open doors symbols are shown although they are closed
^ Open hatch/deck lid is shown although it is closed
^ The electronic parking brake cannot be released (if equipped)
Technical Background
Software concern in the Gateway Control Module.
Production Solution
Updated software in the Gateway Control Module introduced starting with CW45109 production.
Service
Verify Gateway Control Module Software:
^ Connect Midtronics Incharge (INC-940) Tester/Charger to vehicle's battery
^ Connect VAS tester to vehicle
^ Switch ignition ON
^ Select Vehicle Self Diagnosis
^ Select On Board Diagnostics (OBD)
^ Select 19 - Diagnostic Interface for databus (Gateway)
Write down the software level
Update Programming Procedure:
Tip and Note
^ Update the Gateway Control Module using the SVM code 328C as listed in the table shown,
^ Start Guided Fault Finding (GFF) and select vehicle
After system interrogation is complete use forward arrow:
^ Select go to >> Function Component Selection >>
Software Version Management >> Adapting software
^ Select option 2"
^ Follow system prompts and update the radio to SW 0112 using a GeKo ID and the SVM measure code 328C
Warranty
Required Parts and Tools
No Special Parts 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.