keep blowing fuse

Welcome to Priuschat
Are you the original owner? Perhaps someone did a mod of some sort and tapped into that circuit incorrectly.

 

Yes! It has a short.

 

Sounds right to me. Any recent accidents? Changes or modifications made to the car, especially involving removing trim pieces around the floor boards or headliner? A wire may have been pinched or the insulation damaged, causing a short circuit to ground (chasis).

 

I've see shorted light bulbs cause this, and simply replacing them solves it. I can't say if these type bulbs can do that.

 

Is the car equipped with a cigar lighter ?

I had a case were the owners daughter was storing her pennies inside the housing and causing the fuse to blow. She would remove them before exiting the car. The father would replace the fuse,
only to have it blow again later on. I had fun finding that one.
She had a little trouble getting them all removed once and I managed to find and solve the riddle

The customer was blaming me for not finding the problem and kept saying it was the
worst shop he had ever done business with.
He never called to apologize after I found the problem

 

Try removing the bulb if not already done. If that's not the problem, remove the lamp assy and disconnect the plug. Not sure about the traction control light, but can look it up on the print tomorrow morning if needed. Work tonight.

 

The traction control light had me puzzled until I checked:



As mentioned above, I'm going with a short, which can be a b*tch to locate. Good Luck.

 

OP, that's allot of items to check thru. I find it odd that Toyota put the interior lights on the same circuit as the electric power steering. Is the car drivable with this blown fuse?

 

Start with the most likely areas, places that are exposed to movement and possible pinching. That would be the wiring harness that goes into the front of the front doors for the door courtesy lights.

You will need a multimeter and you are looking for continuity where it doesn't belong between a contact/wire and ground (chassis ground point).

My guess is a wire is pinched against an edge of sheet metal and the wire inside is shorted to ground.

SCH-I535

 

Start with the dome light bulb since you list this as being off. Try replacing the bulb first. If this does not work, the lamp assembly is the fixture that the bulb plugs in to. Remove this and check the wiring connection to the dome light fixture.

 

jd is correct. If this does not do it, use the provided (private) info I gave you, disconnecting the plugs at the ECU for each affected light/system on post #9 (one at a time) will narrow it down to the affected circuit real fast with out continually replacing fuses. Then use the meter as I mentioned to isolate.

 

Why keep the info private?

 

How did you figure it out?

 

Thanks for coming back and posting the solution ;-)

Welcome to the Prius addiction

Mike

Mobile on my SGH-i717

 

I'm having the exact same issue with fuse 29. I've ruled out the cig plug, so off to the dealer it goes. I'll let you guys know what the problem is.

 

Ended up being some loose wires coming from the homelink rearview mirror into the dome light. Problem solved.


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