Ignition System

WARNING: This page is about a different car, the 2009 Volkswagen GTI and 2008 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.

The ignition must be turned off when disconnecting the battery. Obtain the radio code for radios with a anti-theft code before disconnecting the battery.
Observe the required safety precautions after connecting the battery. Refer to Removal and Installation .
For trouble-free operation of the electrical components a voltage of at least 11.5 bolts is necessary.
To complete the procedure, check the Engine Control Module (ECM) Diagnostic Trouble Code (DTC) memory and erase any DTCs that may have been stored when testing and making the repairs. If the DTC memory was erased, the readiness code must be generated again, refer to "Guided Fault Finding" in the vehicle diagnostic tester.
If the engine only starts briefly and then shuts off again after troubleshooting, repairs or checking of the components, it may be that the immobilizer is blocking the ECM. The control module may have to be adapted then. Refer to "Guided Functions" in the vehicle diagnostic tester.