Electrical issues on 2018 brz - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Tornike · 10-16-2022, 10:03 AM

Hello, I have front damaged 2018 Subaru BRZ, there happened short circuit on driver side headlight 3 pin cable, after this everything stopped working, like electrical steering, wipers, power windows. Stereo and throttle was working at first after that short circuit, but later it stopped also. i checked everything what could I found on this forum. Main fuse, other fuses and relays seems okay. Alternator also works. I have no idea what to check now. Maybe anyone knows what to do?

soundman98 · 10-16-2022, 10:17 AM

if all the wires are good, then i would suspect the body control module

Tornike · 10-16-2022, 10:23 AM

Quote:

Originally Posted by soundman98

if all the wires are good, then i would suspect the body control module

I was thinking about it also but could it be blown so easily? Or could it cause preventing throttling or turn signals? Turn signals not working also, but emergency button( which turns both turn signals on) working

Tcoat · 10-16-2022, 10:30 AM

Quote:

Originally Posted by Tornike

I was thinking about it also but could it be blown so easily? Or could it cause preventing throttling or turn signals? Turn signals not working also, but emergency button( which turns both turn signals on) working

Many people have blown them just by adding after market lights so a short most certainly could. It has all the symptoms.

Tornike · 10-16-2022, 10:35 AM

Quote:

Originally Posted by Tcoat

Many people have blown them just by adding after market lights so a short most certainly could. It has all the symptoms.

Thanks for a reply. Does bcm have no fuse to prevent blowing it so easy?

soundman98 · 10-16-2022, 10:37 AM

i believe the individual outputs are fused later on, but as tcoat said, people used to blow it just installing led light bulbs, so it's less about the power draw that does it in.

Tcoat · 10-16-2022, 10:38 AM

Quote:

Originally Posted by Tornike

Thanks for a reply. Does bcm have no fuse to prevent blowing it so easy?

It is a computer and as such does not do well with power surges. Fuses prevent overheating the system and burning up but they are not fast enough to prevent surge damage.

Tornike · 10-16-2022, 10:41 AM

I saw it has fuse #36 which is working on my car, i will try to change bcm, but still I don't get how it is connected to throttling for example

Tornike · 10-16-2022, 10:44 AM

Also cooling fan relay ticking all the time and turns fans on when I just turn key once and open ignition

Tornike · 10-16-2022, 01:12 PM

Fixed almost everything except throttling, it was abs/steering fuse in interior and also power outlet no2 fuse. Throttling is because of abd block i think, it seems faulty because of crash probably. When I insert green squared 40A abs fuse, block buzzing all the time

10-16-2022, 10:03 AM	#1
Tornike Member Join Date: Oct 2022 Drives: 2018 subaru brz Location: Tbilisi Posts: 10 Thanks: 0 Thanked 4 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Electrical issues on 2018 brz Hello, I have front damaged 2018 Subaru BRZ, there happened short circuit on driver side headlight 3 pin cable, after this everything stopped working, like electrical steering, wipers, power windows. Stereo and throttle was working at first after that short circuit, but later it stopped also. i checked everything what could I found on this forum. Main fuse, other fuses and relays seems okay. Alternator also works. I have no idea what to check now. Maybe anyone knows what to do?

10-16-2022, 10:17 AM	#2
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,673 Times in 6,781 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	if all the wires are good, then i would suspect the body control module __________________ "The time you enjoy wasting is not wasted time"

10-16-2022, 10:37 AM	#6
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,673 Times in 6,781 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	i believe the individual outputs are fused later on, but as tcoat said, people used to blow it just installing led light bulbs, so it's less about the power draw that does it in. __________________ "The time you enjoy wasting is not wasted time"

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Couple electrical issues	Swagelz	Electronics \| Audio \| NAV \| Infotainment	12	07-09-2018 01:55 PM
Electrical Issues	fuzzybat23	Issues \| Warranty \| Recalls / TSB	10	12-13-2014 05:51 PM
Weird electrical issues. Need help!	Pneub	Issues \| Warranty \| Recalls / TSB	15	09-13-2014 12:38 AM
Electrical Issues	Dr.Science	Issues \| Warranty \| Recalls / TSB	3	11-14-2012 07:18 AM
FR-S electrical issues...	EPIKsung	Electronics \| Audio \| NAV \| Infotainment	2	07-23-2012 10:15 PM

10-16-2022, 10:41 AM	#8
Tornike Member Join Date: Oct 2022 Drives: 2018 subaru brz Location: Tbilisi Posts: 10 Thanks: 0 Thanked 4 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I saw it has fuse #36 which is working on my car, i will try to change bcm, but still I don't get how it is connected to throttling for example

10-16-2022, 10:44 AM	#9
Tornike Member Join Date: Oct 2022 Drives: 2018 subaru brz Location: Tbilisi Posts: 10 Thanks: 0 Thanked 4 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Also cooling fan relay ticking all the time and turns fans on when I just turn key once and open ignition

10-16-2022, 01:12 PM	#10
Tornike Member Join Date: Oct 2022 Drives: 2018 subaru brz Location: Tbilisi Posts: 10 Thanks: 0 Thanked 4 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Fixed almost everything except throttling, it was abs/steering fuse in interior and also power outlet no2 fuse. Throttling is because of abd block i think, it seems faulty because of crash probably. When I insert green squared 40A abs fuse, block buzzing all the time

User Name		Remember Me?
Password