Battery Interrupt Igniter, Removing And Installing: Removing
- Follow all safety precautions when working with pyrotechnic components. Refer to PYROTECHNIC COMPONENTS SAFETY PRECAUTIONS .
- Follow all regulations when disposing of pyrotechnic components. Refer to AIRBAG, BELT TENSIONER AND BATTERY CUT-OUT UNITS, STORING, TRANSPORTING AND DISPOSING .
If Airbag Indicator Lamp -K75- comes on after a vehicle accident, check whether crash data is stored. If this is the case, check if the malfunction >>Resistance too high<< for the Battery Interrupt Igniter -N253- is stored in the 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-.
When just replacing the battery interrupt igniter -N253-, remove it from the replacement part and install it in Fuse Panel A -SA- as follows.
-- Switch the ignition on.
-- Disconnect the battery ground cable with the ignition turned on.
-- Remove the bolts -arrows-.
-- Free up the wiring harness -3-, if equipped.
-- Remove the cover -1- for the battery.
-- Remove the heat shield -2- from the battery.
-- Loosen the nut -1- several turns and remove the battery positive cable terminal with Fuse Panel A -SA- from the battery terminal.
-- Remove Fuse Panel A -SA-.
-- Release the spring -3- and open the flap -2- overFuse Panel A -SA- -arrow-.
Before handling pyrotechnic components (for example, disconnecting the connector), the person handling it must "discharge static electricity". This can be done by touching the door striker, for example.
-- Remove the nuts -2 and 3-.
-- Remove battery interrupt igniter -4-.
-- To do this, open the connector lock -5- using a small screwdriver and disconnect the connector -1-.