2015 BRZ No Start - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

EvilPenguin04 · 05-05-2026, 06:56 PM

Car is a 2015 BRZ Automatic with Sprintex tuned with Ecutek.

I've searched and nothing has solved the issue we have with our BRZ. A week or so ago the car wouldn't start, so I had my wife get in and hit the button and I tapped the starter and it started. So I replaced the starter and it worked for 2-3 days. Now it wont start again and tapping the starter isn't working and it tested good.

Accessories all come on and I have traced the entire starting system from the park safety switch, brake switch, start button, fuses and relays. All of these checked out.

The only thing that has changed was an Ecutek update the day before it wouldn't start after replacing the starter.

I am out of ideas and wondering if anyone has had the same issue or any suggestions.

EvilPenguin04 · 05-26-2026, 01:13 PM

Update

After some reading and researching, holding the key fob to the start button for 30 seconds started the car and I haven't had an issue since. Not sure what it did or fixed but the battery in the key was changed about 6 months ago so it isn't dead.

MX-5RACER · 07-07-2026, 12:19 PM

Double check the battery in the fob. I have recently had bad luck with the Amazon Basic brand of batteries. I had to go to an Autozone and get an Energizer, the Amazon Basic battery only lasted about a month.

Tokay444 · 07-07-2026, 12:38 PM

If you keep your fob close to your cell phone it will kill the fob battery.

Eaton PSI · 07-08-2026, 04:15 AM

I have had issues with brand new duracell batteries not working at all. I've been buying the no-name cheap one from the post office and they work fine.
Or perhaps the starter relay in the fuse box is getting tired.

bababooey · 07-08-2026, 11:16 AM

Quote:

Originally Posted by Tokay444

If you keep your fob close to your cell phone it will kill the fob battery.

interesting, my phone is in a little sleeve between seat & center console, and key fob is on lanyard from the gear shift hanging within 6" or so from phone. Recently had minor issue unlocking a door when pulling handle w/ fob in pocket. Could've sworn I replaced the battery in the last 12 months.

Tokay444 · 07-08-2026, 01:35 PM

Quote:

Originally Posted by bababooey

interesting, my phone is in a little sleeve between seat & center console, and key fob is on lanyard from the gear shift hanging within 6" or so from phone. Recently had minor issue unlocking a door when pulling handle w/ fob in pocket. Could've sworn I replaced the battery in the last 12 months.

Where are they when you're not in the car?

bababooey · 07-08-2026, 06:30 PM

inside the house on the bar top. smh aha moment, near the charging station for tablet & phone.

05-05-2026, 06:56 PM	#1
EvilPenguin04 Member Join Date: Mar 2022 Drives: 2015 BRZ 2004 SVT Cobra Location: Inman SC Posts: 33 Thanks: 2 Thanked 20 Times in 13 Posts Mentioned: 0 Post(s)	2015 BRZ No Start Car is a 2015 BRZ Automatic with Sprintex tuned with Ecutek. I've searched and nothing has solved the issue we have with our BRZ. A week or so ago the car wouldn't start, so I had my wife get in and hit the button and I tapped the starter and it started. So I replaced the starter and it worked for 2-3 days. Now it wont start again and tapping the starter isn't working and it tested good. Accessories all come on and I have traced the entire starting system from the park safety switch, brake switch, start button, fuses and relays. All of these checked out. The only thing that has changed was an Ecutek update the day before it wouldn't start after replacing the starter. I am out of ideas and wondering if anyone has had the same issue or any suggestions.

07-07-2026, 12:19 PM	#3
MX-5RACER Member Join Date: Sep 2017 Drives: 2018 FA24 SWAP BRZ "ANNIE" Location: S. FL Posts: 98 Thanks: 8 Thanked 56 Times in 37 Posts Mentioned: 1 Post(s)	Double check the battery in the fob. I have recently had bad luck with the Amazon Basic brand of batteries. I had to go to an Autozone and get an Energizer, the Amazon Basic battery only lasted about a month. __________________ DJ 2008 MX-5 PRHT "Violet" 2018 FA24 Swap BRZ "Annie"

07-08-2026, 04:15 AM	#5
Eaton PSI Member Join Date: Mar 2023 Drives: 2013 86 Location: melbourne VIC Posts: 85 Thanks: 3 Thanked 46 Times in 26 Posts Mentioned: 0 Post(s)	I have had issues with brand new duracell batteries not working at all. I've been buying the no-name cheap one from the post office and they work fine. Or perhaps the starter relay in the fuse box is getting tired. __________________ 2014 GT86, 2.2L big bore, harrop supercharged

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05-26-2026, 01:13 PM	#2
EvilPenguin04 Member Join Date: Mar 2022 Drives: 2015 BRZ 2004 SVT Cobra Location: Inman SC Posts: 33 Thanks: 2 Thanked 20 Times in 13 Posts Mentioned: 0 Post(s)	Update After some reading and researching, holding the key fob to the start button for 30 seconds started the car and I haven't had an issue since. Not sure what it did or fixed but the battery in the key was changed about 6 months ago so it isn't dead.

07-07-2026, 12:38 PM	#4
Tokay444 Anti stance. Join Date: Feb 2016 Drives: 17 White 860. RCE Tarmac 2. RE-71RS Location: Not Canada Posts: 1,756 Thanks: 939 Thanked 1,026 Times in 582 Posts Mentioned: 10 Post(s)	If you keep your fob close to your cell phone it will kill the fob battery.

07-08-2026, 06:30 PM	#8
bababooey Senior Member Join Date: Sep 2014 Drives: BRZ SWP Limited -6MT Location: HillCountry-TX Posts: 439 Thanks: 145 Thanked 163 Times in 107 Posts Mentioned: 2 Post(s)	inside the house on the bar top. smh aha moment, near the charging station for tablet & phone.

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