Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB) Technical Service Bulletin # 901228 Date: 120328
Computers/Control - No Start After CAN Bus Silence
01 Engine will not start until after CAN bus silence
90 12 28
2023552/3
March 28, 2012.
Supersedes Technical Service Bulletin Group 90 number 10 - 19 dated August 18, 2010 for reasons listed below.
Affected Vehicles
201
Condition
^ The customer may report that the engine does not start. After waiting for several minutes (CAN bus system silence), the engine can be started.
^ The 19 - Data bus on board diagnostic interface J-533 software version is between 095 and 120.
Technical Background
Communication issue on the powertrain CAN bus caused by the wake-up-monitor within J-533 (Gateway).
Production Solution
Modified 19 - Data bus on board diagnostic interface J-533 software (adjusted wake-up-monitor strategy).
Service
1. Check the diagnosis protocol for the following entries:
DTC 4719 in 01 - Engine Electronics.
DTC 12583424 in 15 - Airbag.
DTC 1312 in 19 - Data bus on board diagnostic interface.
Besides these relevant entries, other control units may also have communication entries stored.
SVM Update Instructions
2. Follow all instructions in the attached TSB 2011732 00 Software Version Management (SVM), operating instructions.
3. Check the software version of J-533. Update the software as needed using the SVM action code listed in the table above.
4. Through Vehicle Self Diagnosis, change adaptation channel 7 in J-533 to HEX 030000 to re enable the wake-up-monitor.
202
Warranty
Additional Information
The following Technical Service Bulletin will be necessary to complete this procedure:
^ TSB 2011732 00 Software Version Management (SVM), operating instructions.
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service
manuals for the latest information.
Attachment
203
204
205
206
207
208
209
210
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212
^ TSB 2011732 00 Software Version Management (SVM), operating instructions.
