Jetta L4-1.9L DSL Turbo (BEW) (2004)
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PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - Hard Start/Runs Rough Exhaust Smoke
01 07 45
May 7, 2007
2010461 Supersedes T.B. Group 97 number 05-03 dated July 1, 2005 due to removal of RVU references, reprogramming ECM using Software Version
Management (SVM) and inclusion into ElsaWeb.
Vehicle Information
Condition
Hard Starting (Extended Cranking Required) or No Start When Wet, Runs Rough On Initial Start, May Be Accompanied By Light Gray Smoke
Tip:
Procedure is ONLY valid in vehicles with Software level below 6327.
Technical Background
Hard start, extended cranking, no start when wet (P0321 may be stored in DTC memory). May also be accompanied by rough running and smoking.
Updated ECM software that addresses:
Production Solution
Software update and wiring repair.
Service
Vehicle requirements
Battery MUST have minimum no-load charge of 12.5V (failure to maintain voltage during update process can lead to ECM failure) (use an approved
battery charger 1NC940 to maintain battery voltage).
VAS 5051: connected to vehicle and to 110V AC Power supply at all times during procedure.
VAS 5052: connected to vehicle with battery voltage requirements met.
Any appliances with high electromagnetic radiation (i.e. mobile phones) switched OFF.
When performing the update programming procedure, ALL DTCs for all systems are erased.
DTCs linked to Guided Fault Finding function tests will be lost. Therefore, always address stored DTCs for Customer concerns unrelated to the update
programming procedure first.
Note: