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Old Nov 12th, 2019, 11:41   #13
Rversteeg
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Last Online: Yesterday 11:46
Join Date: Feb 2006
Location: Amersfoort (NL)
Default Immobilizer

The immobilizer is not actually armed when the engine is switched off.
As soon as the engine is started, the fuel ECU sends a digital signal to the immo module. If the immo module recognises the RFID key, the module sends a signal back to the fuel ECU and the ECU will authorize the fuel pump to run.
If there is no signal returned, the engine will stall within one or two seconds with the lambda light illuminated all the time. Upon a second start attempt the engine will not even pick up anymore.

There is no way of bypassing this, as a bypass should actively respond to the fuel ECU.
Easiest is to find an RFID key with corresponding immo module, as these are the only two items that are paired. Tape the RFID key somewhere close to the antenna ring around the ignition barrel and replace the original immo module. This way you can use a simple, non RFID key for opening doors and starting.
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