Home Tips & Tricks 2001 Volkswagen Passat GLX 4Motion UPDATE PROGRAMMING FOR CATALYTIC CONVERTER SYSTEM

2001 Volkswagen Passat GLX 4Motion UPDATE PROGRAMMING FOR CATALYTIC CONVERTER SYSTEM

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Download SERVICE PROCEDURE Engine Control Module Update – Programming (Flashing) Tip: 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. The following “Update – Programming” (flashing) process may overwrite any “TUNED” ECM programming. A “TUNED” ECM is described as any ECM altered so as to perform outside the normal parameters and specifications approved by Volkswagen of America, Inc. If you encounter a vehicle with a “Tuned” ECM, prior to performing the “Update – Programming” (flashing) procedure: