just going through these steps right now, will come back again after finished.Right then, where are we at?
If you still have the step up converter issue then yes the SIM85 has a problem, but I would expect that to put the airbag light on, and you reckon clearing the SBSR fault puts the light out? So that's a bit odd?
SBSL - says it has the wrong chassis number?? But says that wouldn't put the light on? Think you need to check the VIN coded to the SBSL if you can.
SBSL - had a knee airbag issue - intermittent - not current. That 'may' be down to corrosion in the plug that connects the door to the a-pillar, so worth a check at the very least.
SBSR - that code usually does mean the module is dead, but first try all the usual tricks, cleaning the plug and pins, etc.
See if you can get the airbag light to go out by clearing the SBSR fault, but NOT clearing the SIM85 step up one. If you can then possibly you can get away with swapping just the SBSR, but I remain doubtful.
But yes clearing the SBSR turns off the airbag light then obviously when ignition goes off and comes back in it’s back again.
I’m gonna follow you steps here and report back after recode this SBSL module