Location of Front Impact Sensors?

[Technician]

Having been in your situation and several different machines attempting to enter the volvo ECU, only Volvo seemed to be able to access that part of the ECU - no doubt it has a clever lock on it to accept only volvo's scanners.

I'd definatly get a diagnostic check. It does a full check of the electronics and gives you a print out of whats good, marginal or faulty.

Once you have the info as to whats wrong its pretty simple to change the various parts, the whole dash comes out fairly easily so its not a total nightmare. There are just a few fiddly (will it break the plastic or not) moments. lol.

I'd probbably suggest that the drivers and passenger seatbelt pre-tensioners have fired and need to be changed. They sometimes have a white powder discharge when they have gone off.

Hope this helps.