Battery Interrupt Igniter, Removing and Installing
Special tools, testers and auxiliary items required
- Torque wrench V.A.G 1331
Fig 2: Suitable Vehicle Diagnosis, Testing And Information System E.G. Diagnostic Operation System VAS 5051 A
- Vehicle Diagnosis, Testing and Information System VAS 5051B
CAUTION:
Battery Interrupt Igniters -N253 are pyrotechnic components. The same safety measures apply as with airbags. Observe safety precautions for work on airbags →
Airbag Safety Precautions .
NOTE:
- If Airbag Malfunction Indicator Lamp (MIL) K75 lights up after a vehicle accident, check whether crash data is stored using. If this is the case, check in DTC memory whether for Battery Interrupt Igniter -N253 there is entered the DTC 001 Resistance too large. If this is the case, Battery Interrupt Igniter -N253 must be replaced.
Component location in luggage compartment, right side, under side cover for luggage compartment trim.
Removing
NOTE:
- To remove the airbag, battery must be disconnected with the ignition switched on, this deviates from the description "disconnecting and connecting battery" (→ 27 - BATTERY, STARTER, GENERATOR, CRUISE CONTROL ).
- Switch on ignition.
- Disconnect battery. → 27 - BATTERY, STARTER, GENERATOR, CRUISE CONTROL .
- Open cover - 1 - for Battery Interrupt Igniter -N253.
CAUTION:
Before disconnecting electrical connection, technician must discharge electrostatic energy. To do this, briefly touch door lock, for example.
- Disengage latch of electrical harness connector - 4 - and disconnect connector.
- Unscrew nuts - 2 - (2x) and remove Battery Interrupt Igniter -N253.
NOTE:
- Observe disposal of pyrotechnic airbag units → Pyrotechnic Airbag Unit Disposal
Installing:
CAUTION:
Battery Interrupt Igniters -N253 are pyrotechnic components. The same safety measures apply as with airbags. Observe safety precautions for work on airbags →
Airbag Safety Precautions .
- Installation is performed in reverse order of removal, noting the following.
- Observe the specified tightening torque.
- When connecting electrical connector, ensure it engages securely and locking mechanism is OK.
CAUTION:
No one should be in vehicle when connecting battery.
- Follow the safety precautions after connecting the battery. → 27 - BATTERY, STARTER, GENERATOR, CRUISE CONTROL .
- Finally, check DTC memory for airbag control module using and process if necessary.
Tightening torques:
| Component | Nm |
|---|---|
| Battery Interrupt Igniter -N253- | 20 |