This is information about Volkswagen Service Technical Bulletin 99-11 Anti-theft Immobilizer On Board Diagnostic.This Volkswagen Service Bulletin divided to Anti-theft immobilizer On Board Diagnostic (OBD), Diagnostic Trouble Code (DTC) table, Procedure after changing engine control module (Matching), Replacement instrument cluster, adaptation, Immobilizer troubleshooting, Emergency start function, activating without VAG 1551. Please download Volkswagen Service Technical Bulletin 99-11 Anti-theft Immobilizer On Board Diagnostic below to read full information.

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Anti-theft immobilizer On Board Diagnostic (OBD) Immobilizer electronic components and warning light function The immobilizer electronics consist of: r control electronics in instrument cluster r a warning light for anti-theft immobilizer sensor -K117- in instrument
cluster (speedometer display) r a matched engine control module
r an induction coil on the ignition lock r matched ignition keys with electronic components (transponder and response reader memory)
Malfunction recognition and Diagnostic Trouble Code (DTC) display via warning light for anti-theft immobilizer sensor An intact immobilizer system is indicated by the warning light for anti-theft immobilizer sensor -K117- lighting up and going out after approx. 3 seconds when the ignition is switched on.

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