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Old 04-12-2021, 07:55 PM #1
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Blown Fuse(s) - Need help ASAP!
Somehow a fuse or relay blew this afternoon and I need help trying to figure out which one.

What does NOT work:

Drivers & Passenger Windows front and rear
Auto dimming mirror light not working
Heated Seats not working
Fan for heat/ac not working
Display above radio shows time but DTE and Direction are gone

That is all I have found so far.

I pulled the fuse for the heated seats and that is fine, which tells me it is a larger problem.

I looked through the manual and don't see one for the auto dimmer RV mirror though. I am going to start pulling fuses that link to the items I mentioned above but if those all come out 'clean' is there a relay I should be looking at?

NEED to drive this tomorrow AM! Thank you!

'10 SR5
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Old 04-12-2021, 08:32 PM #2
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Found it! Swapped relays in the engine bay, no luck. Checked the larger fuses with the clear windows, all good. Started pulling fuses in under the dash one by one. About mid way up the middle run I found a blown 10amp fuse. Used a spare from the engine bay and all is good.

I am shocked a single 10amp fuse controls so much, and even more!
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Old 04-12-2021, 09:33 PM #3
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Quote:
Originally Posted by westwind77 View Post
Found it! Swapped relays in the engine bay, no luck. Checked the larger fuses with the clear windows, all good. Started pulling fuses in under the dash one by one. About mid way up the middle run I found a blown 10amp fuse. Used a spare from the engine bay and all is good.

I am shocked a single 10amp fuse controls so much, and even more!
That's good. Did something happen before the failure?

Buy some backups ...
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Old 04-13-2021, 12:03 AM #4
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Quote:
Originally Posted by westwind77 View Post
Found it! Swapped relays in the engine bay, no luck. Checked the larger fuses with the clear windows, all good. Started pulling fuses in under the dash one by one. About mid way up the middle run I found a blown 10amp fuse. Used a spare from the engine bay and all is good.

I am shocked a single 10amp fuse controls so much, and even more!
So, what is the slot description for the fuse that was for all of those items?
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Old 04-13-2021, 12:07 AM #5
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Originally Posted by westwind77 View Post
Found it! Swapped relays in the engine bay, no luck. Checked the larger fuses with the clear windows, all good. Started pulling fuses in under the dash one by one. About mid way up the middle run I found a blown 10amp fuse. Used a spare from the engine bay and all is good.

I am shocked a single 10amp fuse controls so much, and even more!
Glad you got it figured out. Was it the ECU-B 10A fuse? The main ecu communicates with the other écu's that control the accessories. The power windows and the AC have no connection but are controlled by their own individual sub écu's.
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Old 04-13-2021, 12:59 AM #6
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Any amperage readings in case of future problems?
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