Anybody experts on Toyota airbags and seat belt tensioners?

That car also could have been rear ended, causing the belt pretensioners to pop off, hence no air bag deployment. Some Toyotas have an occupancy sensor under the front seats in such a case. If the car was rear ended, the occupancy sensor(s) might be needed and a dealer to flash them.
I work in a collision shop where we have the capability to do simple resets and scans. That one, however, we are not able to flash, so we send them to the dealer.
Was it in a frontal or rear accident?