Battery Interrupt Igniter from 06.2006

Battery Interrupt Igniter from 06.2006

Special tools, testers and auxiliary items required

• torque wrench (V.A.G 1331)

• Vehicle Diagnosis, Testing and Information System (VAS 5051B)

CAUTION!
The battery interrupt igniters (N253) are pyrotechnic components. The same safety measures apply as with airbags. Observe safety precautions for work on airbags. Refer to => [ Airbag System General Safety Precautions ] Airbag System General Safety Precautions.

• If the airbag indicator lamp (K75) illuminates after a collision, check for stored collision data using the. If data is present, check if the fault 001 Resistance Too High is stored in the DTC memory for the battery interrupt igniter (N253). If it is, replace the battery interrupt igniter (N253).

• The battery interrupt igniter (N253) interrupts the circuit when an airbag deploys. Always replace the battery interrupt igniter (N253) after an airbag deploys.

Removing

• The battery must be disconnected with the ignition switched on, unlike the description in "Battery, Removing and Installing".

- Switch on ignition.

- Remove the battery.

- Remove the bolts - 2 - and - 3 -.





CAUTION!
Before disconnecting electrical connection, technician must discharge electrostatic energy. To do this, briefly touch door lock, for example.

- Remove the battery interrupt igniter - 4 -.

- Remove the retainer - 5 - downward - arrow -, press on it and disconnect the electrical connector - 1 -.

Installation

CAUTION!
The battery interrupt igniters (N253) are pyrotechnic components. The same safety measures apply as with airbags. Observe safety precautions for work on airbags. Refer to => [ Airbag System General Safety Precautions ] Airbag System General Safety Precautions.

Installation is reverse of removal, but note the following:

- Observe the specified tightening specification.

• Ensure that electrical connections are pushed in as far as stop and engage with a click.

CAUTION!
No one should be in the vehicle when connecting the battery.

- Install the battery and connect it with the ignition switched on.

- Check the airbag control module DTC memory and correct any faults if necessary.

Tightening Specifications