iFixit - Answers With Device "2011-2013 Scion tC"

2011-2013 Scion tC: Car Only Starts when I Bypass the Starter Fuse

Fri, 12 Sep 2025 19:07:09 -0700

My car is a 2005 Scion tC (they didn’t have that option when I made the forum.) It does not crank when I turn the key. If I hook up jumper cables same thing. I went through tests to see what it may be. I removed the starter relay/fuse from the fuse box. I was able to put to wires in the fuse “plug” to bypass the starter relay/fuse and the car starts. I went ahead and got a new fuse/relay and when I put it in, the same thing happens. Doesn’t crank at all. I have a multimeter to test different wire connections. I am trying to figure out what the problem is. I think it is the ignition switch or the park/neutral safety switch. I am not sure if that is right or even how to test that. I am adding a picture of someone bypassing the starter relay/fuse for a Scion xD

This is my fuse box, it is slightly different than the diagram you shared.

This image is a picture of how I can get the car to turn over and start. Like I said the fuse isn’t the issue (tested with a new one). That is however where the starter fuse is located.

This is an automatic transmission. With that being said, which contacts should I jump to test the neutral switch?

I tried these three combos for grounding the wires. I had no luck

This is what the connector and the wires look like

Something to note, I was able to get the car to try and start (the battery has been sitting and needs charged) by a combination of grounding the relay fuse as well as the first picture of me grounding the NSS connection. Pictures showing that

I only say that because that makes me assume the way I grounded the NSS worked that time because when I ground the Starter Relay it did start to work (like it does w/ the NSS normally.)

With all that being said what else could be the issue? It seems to me that something is not relaying the message to the starter relay properly so it does not try to run (like I said I had tried a brand new starter relay and that didn’t change anything). What are your thoughts? @travisjfox @oldturkey03

⟐ Commented September 12, 2025 at 19:07 MST

2011-2013 Scion tC: unplugging my amp and a cable shorted and when I tried to turn on my c

Sun, 04 Jun 2023 07:11:50 -0700

I was unplugging my amp and a cable shorted and when I tried to turn on my car, it didn't turn on only the dashboard lights, the stereo didn't turn on either, the windows didn't go down either, and the cable could someone help me find out what it is?

⟐ Edited June 04, 2023 at 7:11 MST

2011-2013 Scion tC: Why are my RPMS running high while in “last gear”?

Wed, 16 Oct 2019 21:17:41 -0700

I have a standard 2005 Scion tC, when I get to 5th(last gear) gear my RPMS get up to 4000. What would be the reason?

⟐ Answered October 16, 2019 at 21:17 MST

2011-2013 Scion tC: Where should I buy my Brake Pads @?

Sun, 28 Apr 2019 09:37:39 -0700

Scion tC 2006

Toyota ?

OReil ? / Auto Z ? / eBay ?

⟐ Answered April 28, 2019 at 9:37 MST

2011-2013 Scion tC: Heated seat (under the seat wiring diagram)

Fri, 08 Dec 2017 13:23:47 -0700

I have a 2011 Scion TC with leather heated seats and the heated seats are not working. I bought this car used from a dealership 2 years ago and am just getting around to see if I can fix the heated seats. My first thought was the fuses were bad. I switched out the fuses and still not working. I see a plug under the seat that is not plugged in to anything.

This may or may not be the problem, but I can't seem to find where this plug would hook up to. Have been trying to find a wiring diagram or some sort of tutorial online and just cannot find one. Can you help me with this?

⟐ Answer accepted December 08, 2017 at 13:23 MST

2011-2013 Scion tC: Where can I get a step by step guide to replace my throwout bearing

Thu, 04 Oct 2018 22:32:36 -0700

I cannot find a repair manual of any sort to fix my scoin tc RS 8.0 Please respond. Desperately need to fix my throwout bearing!