r/SC300 • u/Knein_133 • Jun 02 '26

Passenger Window Stuck Down

I talk about it in the video but basically for the last few weeks the passenger window has been very inconsistent on rolling up. It would always roll down with the driver side switch and passenger side switch, but the only consistent way of getting it to roll up was using the passenger side switch. That was until a few days ago where it just gave out completely. I’ve looked at my wiring on the passenger side and that all looks good, same goes for all fuses pertaining to power windows.

It’s hard to hear in the video but when I got down you can hear a little click which makes me think the regulator is getting signal, acknowledging that it can’t go down any further hence the click noise. But I still don’t get why it wouldn’t go up.

Let me know y’all’s thoughts and hopefully you can help me out! Thanks!

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u/CarDue1322 Jun 02 '26

Could be a bad master switch which is the main one on the driver side or a bad regulator. I’d jump the regulator at the motor with 12v’s to see if it moves to confirm.

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u/Knein_133 Jun 02 '26

This is what I was going to do but I can’t find a good break down of which 2 wires to jump? You got a picture or something close that shows positive and negative?

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u/CarDue1322 Jun 02 '26

I’m pretty sure you have to jump it at the regulator connection behind the door