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Is there any safety reason NOT to drive with an empty passenger seat buckled up?


Active Member
Supporting Member
Jul 21, 2012
SF Bay Area
I believe in modern cars the airbags sometimes adjust their deployment speed based whether the passenger is buckled in or not. But the same cars also would have an occupancy sensor. Now would having the seat buckled force the car to fire the airbag when it otherwise wouldn't? I think this is de minimis consideration but I putting it out there as a possibility.

Snow Drift

[Off-Road Assist] Activated
Feb 10, 2016
Long Island
Are you saying the rattle stops when it’s plugged in?
I find that if the belt is twisted the buckle gets stuck between the seat and pillar. This twisting happens every time my wife gets out of the car. Just untwist the buckle and it should stop. You can also check the position of the passenger seat vs the pillar. Move it back or forth to prevent an untwisted buckle from hitting the pillar. Both of theses fixed the issue for me. The rear seats buckles can also rattle if not laid properly.

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