why my motorized seatbelts stop working on my 1987 cressada?
Could be numerous things. The electric seatbelts on Toyota vehicles have a control module, electric tracks (one per side) and electric motors (one per side). Based on the fact that both have stopped working I would check a fuse or relay, but I am guessing that either the module or track(s) have gone bad. This is not uncommon for these vehicles based on age and mileage.
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