So my SRS light is on, replaced the front left sensor, to no avail. Swapped with right front--no help at all.

I did the paperclip trick to read srs codes, reads 4-1, which I read is supposed to be passenger seat belt tensioner???

To boot - when the weather is really warm, like 100 or above, And humidity is high....the light goes off.

???

Took to dealer three times, they would get it to go off, but it comes on again after a day or two.

Tried the reset procedure ( yellow wire into fuse box), but it doesn't work. It never resets.

Vehicle was in a rear collision 1 year ago. Light was off for 3 months, but then came back on.

Any ideas????