BMW OBC manual
BMW 525 extended immobilizer function
Extended OBC immobilizer function.
You can establish a BMW OBC code that will prevent the engine from being started unless the code is entered.
If you do not have access to the OBC code, the emergency de-activation procedure will have to be carried out.
Establishing and activating the BMW e34 OBC code:
Press the right side of the button.
Press the left side of the button.
OBC display shows:
Enter the OBC code with the function buttons.
To correct an entry:
Press on the left and repeat the input.
To store the input:
Press the right side of the button. Turn the ignition key to position 0.
Deactivate the immobilizer code.
When you are asked to input the code (ignition key in position 1 or 2):
Input the code at the OBC function buttons.
Press the right side of the button.
After the OBC immobilizer code has been input correctly and confirmed with the SET button, the time display appears.
BMW E34 OBC / BMW 525 OBC extended immobilizer function.