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9
Immobilizer
General description:
The vehicle is equipped with an immobilizer of the 4th generation.
Modifications by comparison with the immobilizer of the 3rd gen‐
eration:
♦ An adaptation of components of other group marks to Volks‐
wagen vehicles is no longer possible.
♦ Vehicle keys are preprogrammed with a base code by the
manufacturer. This base code includes a specific manufactur‐
ers code. It is only possible to learn a key of a vehicle if they
are programmed with the right manufacturers code.
Fault detection and fault display:
The immobilizer is equipped with self-diagnosis which makes fault
finding easier.
For fault finding, use the vehicle diagnosis, testing and informa‐
tion system -VAS 5051A- in “guided fault finding” mode.
9.1
Immobilizer control unit -J362-
The immobilizer control unit -J362- is integrated in the dash panel
insert. If the control unit is defective the complete dash panel in‐
sert must be renewed.
– Renewing dash panel insert
⇒ page 150
.
9.2
Immobilizer reader coil -D2-
The immobilizer reader coil -D2- is joined to the ignition switch
and cannot be renewed individually.
– Removing and installing ignition switch
⇒ page 231
.
9.3
Ignition key
– Removing and installing the ignition key battery with radio re‐
mote control ⇒ General Body Repairs, Exterior; Rep. Gr. 57 ;
Central locking; Removing and installing battery for the (fold‐
ing) main key with radio remote control .
– Removing and installing the radio container (transmission unit
for radio-controlled central locking) for the ignition key ⇒ Gen‐
eral Body Repairs, Exterior; Rep. Gr. 57 ; Central locking;
Removing and installing battery for the (folding) main key with
radio remote control .
9.3.1
Ignition key - change code transponder
It is not possible to replace the change code transponder in the
ignition key.
The entire key must always be replaced if the change code trans‐
ponder is found to be defective.
Note
♦
If an ignition key is replaced or an additional ignition key is
required, the new ignition key must always be adapted to the
immobilzer
⇒ page 276
.
♦
If the radio container (transmission unit for radio-controlled
central locking) of the ignition key is also replaced, it must be
adapted to the comfort system
⇒ page 276
.
Jetta 2005 ➤ , Bora 2006 ➤
Electrical System - Edition 05.2005
9. Immobilizer
275