I got a 2015 Prius c. After my front passenger seat belt got locked i dismantled it to try to clean the belt due to excessive dust and grime. I even sprayed WD40 inside the spring mechanism by avoiding to wet the belt textile material. It didn't help so until I will order a new generic belt I want to get rid of the beeping sound from the dashboard. QUESTION:if I disconnect the electric sensor yellow plug from the spring mechanism will it stop beeping without to damage the airbag electric connection?? I am asking this because if u will see my 2nd image with the yellow label, u will read cautions about dismantling the metal cover where there are also the airbag connections which coecor uld explode. The YouTube video explains that before disconnecting the yellow connector of the seat belt box we need to unplug the battery ground wire.
The yellow wiring and connector are for the explosive pretensioner that pulls you back in the seat belt in a crash. That should be a completely separate circuit from the "have you buckled the seat belt?" switch, which should have ordinary, non-bright-yellow wiring to it, and might be connected to the inboard buckle rather than to the retractor. If your concern is about silencing the "buckle your seat belt" beep, it's probably there you should be looking. Absolutely, any time you do any work on the car's explosives or the bright yellow wiring, you should start by understanding all of the safety instructions for that system in the repair manual. Toyota Service Information and Where To Find It | PriusChat I would have some qualms about trusting a pyrotechnic retractor that had been disassembled in the field. Replacing it with a known working one might be a better bet. (Toyota would advise against getting one from a salvage car, but I might consider one that seemed in good condition out of a salvage car where the pyrotechnics didn't deploy.)
