Battery Interrupt Igniter -N253-, REMOVING AND INSTALLING, 12 VOLT: Notes

WARNING: This page is about a different car, the 2024 Audi SQ7, 2024 Audi Q7, 2023 Audi SQ7, and 2023 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

If, after a collision, a fault in the airbag system is shown in the instrument cluster, check if the crash data is saved using the Vehicle Diagnostic Tester. If this is the case, check if the fault >>Resistance too high<< is stored in the DTC memory for the Battery Interrupt Igniter -N253-. If this is the case, the 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.