immboliser issue leon cupra 2003

lars

Active Member
Nov 6, 2018
2
0
Hey!

The immobiliser yellow key alarm sign is blinking, the car starts up perfectly fine but cuts off right after start up.
i had the key recoded, and after a few attempts we got it running, the next day the problem was back, any thoughts? been thinking of buying fortin EVO-ALL bypass immobiliser to get my car up and running as fast as possible. Seems to me like the problem is in the key, transponder? but im just playing macgyver when it comes to electrical issues.
 

mty12345

Active Member
Jun 17, 2011
3,768
475
bristol
Hi mate, this problem can be caused by the soldering on the circuit board inside the instrument cluster, where the green socket is soldered to the board. Either try soldering it, or get someone to do it for you if you don't feel like attempting it. Pins 1 and 17 do the immobiliser.

here is a bit more information:

32-pin connector, green

1 - Reading coil for electronic immobiliser.....17 - Reading coil for electronic immobiliser
2 - Warning lamp for main beam..................18 - Rear fog lamp warning light
3 - Warning lamp for dip beam.....................19 - Front fog lamp warning light
4 - Oil level gauge sender............................20 - Seat belt warning system warning lamp
5 - Speed signal, output...............................21 - Hand brake switch
6 - Speed signal, input.................................22 - Brake system warning lamp
7 - CAN L (motor).......................................23 - Oil pressure switch
8 - CAN H (motor)......................................24 - CAN Activation mode
9 - CAN L (comfort)....................................25 - CAN (motor), insulating shield
10 - CAN H (comfort)..................................26 - CAN (comfort), insulating shield
11 - Multi-functional indicator.......................27 - Multi-function indicator - Reset
12 - Multi-functional indicator.......................28 - Free
13 - Brake system fault indicator light...........29 - Warning lamp for tail lights
14 - Free....................................................30 - Windscreen washer fluid level sender
15 - Fuel level gauge sender........................31 - Exterior temperature sensor
16 - Coolant level warning sender................32 - Terminal 31
 

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