Power Seat Fuse Keeps Blowing - Hyundai Forums : Hyundai Forum
 
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post #1 of 4 (permalink) Old 06-17-2017, 03:00 AM Thread Starter
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Power Seat Fuse Keeps Blowing

Hey everyone, so my parents 2010 Sonata has an issue with the driver power seat. The 30A fuse keeps getting blown after the power seat is moved forward or backward. The fuse will either trip right when you move the switch and the seat hasn't moved, or when the seat is moving. I know it's not a short in the wiring harness that comes from the body and connects to the harness under the seat as the fuse is fine unless the power seat function is used. So, the issue is somewhere in the seats wiring harness or within the motor that moves the seat. Anyone else experienced this issue or has any tips for troubleshooting/narrowing down what the problem is? Diagrams would be great. I do have a test light and multimeter for troubleshooting if needed.

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post #2 of 4 (permalink) Old 06-17-2017, 09:27 AM
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I would take the seat out so you can eyeball the seat harness. Not hard to do but disconnect the battery first to avoid air bag issues. Only 4 bolts hold it in and the electrical connectors.

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post #3 of 4 (permalink) Old 06-17-2017, 12:34 PM
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Quote:
Originally Posted by MTTech View Post
the fuse is fine unless the power seat function is used.
Does it blow when you operate the switch in either direction?

If the fuse blows regardless of direction that suggests the motor is either faulty or the seat is mechanically seized and is overloading the motor. It couldn't really be the wiring because in one of the two directions the shorted wire will be a ground and a ground to ground short wont blow the fuse. A wiring short after the switch would only blow the fuse in one direction.
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post #4 of 4 (permalink) Old 06-17-2017, 01:08 PM Thread Starter
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Quote:
Originally Posted by AUTOSPARK View Post
Does it blow when you operate the switch in either direction?

If the fuse blows regardless of direction that suggests the motor is either faulty or the seat is mechanically seized and is overloading the motor. It couldn't really be the wiring because in one of the two directions the shorted wire will be a ground and a ground to ground short wont blow the fuse. A wiring short after the switch would only blow the fuse in one direction.
Yeah that's what I thought. Wegading the wiring and short. The seat does move like normal and isn't seized. I actually took off the seat for a visual inspection and moved the seat switch. The track does move without blowing the fuse. When I installed the seat again and moved the switch the fuse blew right away. I put in another fuse and assisted the seat by pushing the seat forward while scribing the switch forward and the seat moved normally without blowing the fuse. At this point I feel like the motor is the culprit. Problem is I need a guide on how to remove the motor.

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