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If your BMW X3 won't start and you suspect the immobilizer is the problem, you can reset it by using the programmed keys to unlock the doors. Using the key fob will send the right signal to the ECU to deactivate the immobilizer. If your X3 has been idle for a while and the battery is low, it may struggle to recognize signals from the remote. In this scenario, charge or replace the battery before attempting again. To disable triggered alarms like honking horn or flashing lights, simply insert your key into the ignition, turn it to the ON position, and keep it there for more than 10 seconds.
Translate the code "1b2001" from BMW for the X3 model.
How much does it cost to set up an immobilizer?
To reprogram the immobilizer on the BMW X3, simply turn the key to the on position for 10 seconds, then switch to the off or lock position for another 10 seconds. Repeat these steps, then start the vehicle to complete the reset process.