Ignition System

For trouble free operation of the electrical components a voltage of at least 11.5 volts is necessary.
After completing the work, check the Engine Control Module (ECM) Diagnostic Trouble Code (DTC) memory. Erase all DTC entries which may have been caused by tests and repairs. Generate a readiness code if the DTC memory was erased. Refer to "Guided Function" in the vehicle diagnosis, testing and information system VAS 5051.
If the engine only starts briefly and then shuts off again after troubleshooting, repair or checking of the components, it may be that the immobilizer is blocking the ECM. The module must then be adapted, as necessary. Refer to "Guided Functions" in the vehicle diagnosis, testing and information system VAS 5051.