2015 start/stop button
Thread Starter
5th Gear
Joined: Aug 2004
Posts: 5
Likes: 0
From: Oklahoma
2015 start/stop button
Four weeks ago went to try and start my car and it wouldn't start, the button would work to turn it on (acc) and off just no start. Battery was good the fob battery was good, brake light came on when you pressed the brake. Put it in neutral still no start. Took the start button from our 2018 RX and it started.. Put the original back in and it started, that button worked for a week then the same thing, pulled a button from a 2016 Highlander and that worked. Ordered a used button off eBay and picked up one locally from salvage they worked for two weeks. Now neither of my new to me buttons start the engine... Does anyone have any ideas what it might be?
Pit Crew
Joined: Jul 2025
Posts: 155
Likes: 71
From: Florida
It sounds like the problem isn't the buttons themselves. The issue is probably the brake switch. It's a common failure. The computer needs to see that you're pressing the brake pedal before it will let the car start. Even if the brake lights come on, the switch can still be failing and not sending the correct signal to the starter system. I'd test or replace the brake switch first.
Thread Starter
5th Gear
Joined: Aug 2004
Posts: 5
Likes: 0
From: Oklahoma
The brake switch is located at the top of the brake pedal arm, where it connects to the firewall. It's a small plastic unit that's activated when you press the brake pedal.
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