Audi Q7: Battery Interrupt Igniter
Overview - Battery Interrupt Igniter

1 - Connector
- For the Battery Interrupt Igniter -N253-
2 - Nuts
- Tightening specification. Refer to
→ Electrical Equipment; Rep. Gr.97; Relay Panels, Fuse Panels and
E-Boxes; Component Location Overview - Relay Panels, Fuse Panels and
E-Boxes.
3 - Battery Interrupt Igniter -N253-
- Available only together with -4-
4 - Fuse Panel A -SA-
- Removing and installing. Refer to
→ Electrical Equipment; Rep. Gr.97; Relay Panels, Fuse Panels and
E-Boxes; Component Location Overview - Relay Panels, Fuse Panels and
E-Boxes.
5 - Cover
6 - Positive Terminal Clamp
- Tightening specification. Refer to
→ Electrical Equipment; Rep. Gr.27; Battery; Overview - Battery.
Battery Interrupt Igniter, Removing and Installing
WARNING
- Follow all safety precautions when working on
pyrotechnic components. Refer to
→ Chapter "Safety Precautions for Pyrotechnic
Components".
- Follow all regulations when disposing of pyrotechnic
components. Refer to
→ Chapter "Airbag, Belt Tensioner and Battery Cut-Out
Units, Storing, Transporting and Disposing (Pyrotechnic
Components)".
Note
- If the Airbag Indicator Lamp -K75- turns on after a vehicle
accident, check whether crash data is stored using the Vehicle
Diagnostic Tester. If this is the case, check if the malfunction
"Resistance too high" for the
Battery Interrupt Igniter -N253- is stored in the Diagnostic
Trouble Code (DTC) memory. If this is the case, Battery
Interrupt Igniter -N253- must be replaced.
- The Battery Interrupt Igniter -N253- interrupts the
electrical circuit each time an airbag is deployed. The Battery
Interrupt Igniter -N253- must be replaced after a deployment.
- The Battery Interrupt Igniter -N253- is available as a
replacement part only together with Fuse Panel A -SA-.
- Fuse Panel A - SA-, Removing and installing. Refer to
→ Electrical Equipment; Rep. Gr.97; Relay Panels, Fuse Panels
and E-Boxes; Component Location Overview - Relay Panels, Fuse
Panels and E-Boxes.
READ NEXT:
Overview - Driver Side Airbag
1 - Wiring Harness
For Driver Airbag Igniter -N95- and Driver Airbag Release Valve
Igniter -N490-
Replacing. Refer to
→ Chapter "Airbag Connector,
Overview - Front Passenger Airbag
1 - Connector
For Front Passenger Airbag Igniter 2 -N132-
2 - Connector
For Front Passenger Airbag Release Valve Igniter -N491-
3 -&n
1 - Front Thorax Airbag
Driver side: with the Driver Thorax Airbag Igniter -N199-
Front passenger side: with Front Passenger Thorax Airbag Igniter
-N200-
WARNING
Follow all s
SEE MORE:
1 - Bolt
8 Nm
2 - Front Level Control System Sensor
Left Front Level Control System Sensor -G78-
Right Front Level Control Sensor -G289-
With coupling rod and retaining plate
Removing and installing. Refer to
→ Chapter "Left/Right Front Level Control Syste
Identification
Engine Number/Engine Specifications
Engine Number
Note
The engine number can only be seen with the engine cover
removed.
The engine number ("engine code" and "serial number") is
located on the front of the cylinder block at the top
-arrow-.
Engine codes beginning with "C"