2015 BRZ rear suspension problem - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

av8rdav · 10-05-2020, 12:26 AM

Bought this car a month ago with 41000 miles. It handled great. No problems.
Now all of a sudden the traction control or stability control is activating a lot sooner that when I first got the car. The rear is not as solid as it was. It feels like it floats out when cornering. Also during acceleration I hear what sounds like tires rubbing. I know it's not that. Is this what the stability control sounds like when active?
Best I can guess is something in the rear broke or is loose or slipped.
Seems like its getting worse. Any ideas what could have happened? Also the car has no mods that I know of.

Thanks in advance and hello to everyone.

Griever423 · 10-05-2020, 01:55 AM

Could be an alignment issue. Maybe a toe issue. I'd get the alignment checked ASAP.

thomasmryan · 10-06-2020, 07:11 AM

36 psi all the way around?

look at your rear sway bar pickup points/end links or post a picture.

ZDan · 10-06-2020, 10:21 AM

Are you getting any warning lights?

I had an incident at the track a few weeks ago where a yaw sensor went bad (apparently). It seemed cause the front left to be overworked under hard braking. No lights at this point. Then the VSC warning light came on, and at the next braking zone it just locked the front left, then both fronts :O

You might try removing the 40A ABS fuse and see if the car behaves normally. It could be that the VSC is confused and is applying asymmetric braking to "fix" things...

p1l0t · 10-06-2020, 11:56 AM

Ever since I shut my nannies off I stopped getting annoying lights on during hard turns.

Sent from my SM-G975U using Tapatalk

av8rdav · 10-06-2020, 05:30 PM

No warning lights. I'm taking it to Subaru tomorrow.

CrowsFeast · 10-07-2020, 09:46 AM

Sounds like a bushing to me, but this is also the typical 'diagnostic via internet' dilemma.

av8rdav · 10-07-2020, 10:10 PM

Took the car to Subaru and they drove it and diagnosed it as a bad VSC (VDC) Control Module. Only about $1500 for that part.
Thanks to those who responded.

ZDan · 10-08-2020, 04:23 PM

Quote:

Originally Posted by av8rdav

Took the car to Subaru and they drove it and diagnosed it as a bad VSC (VDC) Control Module. Only about $1500 for that part.
Thanks to those who responded.

Jeezis... 95% sure mine's bad too. I guess at 46k miles I'm outta warranty on that :'(

p1l0t · 10-08-2020, 08:28 PM

OUCH

I guess that's not something you can just find on the bay eithet.

Sent from my SM-G975U using Tapatalk

av8rdav · 10-08-2020, 10:26 PM

Quote:

Originally Posted by p1l0t

OUCH

I guess that's not something you can just find on the bay eithet.

Sent from my SM-G975U using Tapatalk

Plenty of ECM's but none of these.

av8rdav · 10-08-2020, 10:30 PM

Quote:

Originally Posted by ZDan

Jeezis... 95% sure mine's bad too. I guess at 46k miles I'm outta warranty on that :'(

The people at Subaru said they had never had an issue like this. I'm just glad the tech was able to drive it and see what I was talking about. He did say it was intermittent but he was able to get it to act up.

norcalpb · 10-08-2020, 11:35 PM

Is this what they replaced?

Ragin Gti · 10-09-2020, 08:11 AM

I doubt that’s what’s wrong, sounds more like a wheel speed sensor. I’d call Subaru customer service (1-800-Subaru3) and ask for financial assistance. Customer service will often offer to help pay for a repair.

Sent from my iPhone using Tapatalk

10-05-2020, 12:26 AM	#1
av8rdav Junior Member Join Date: Oct 2020 Drives: 2015 Subaru BRZ Limited no mods Location: Northern California Posts: 9 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	2015 BRZ rear suspension problem Bought this car a month ago with 41000 miles. It handled great. No problems. Now all of a sudden the traction control or stability control is activating a lot sooner that when I first got the car. The rear is not as solid as it was. It feels like it floats out when cornering. Also during acceleration I hear what sounds like tires rubbing. I know it's not that. Is this what the stability control sounds like when active? Best I can guess is something in the rear broke or is loose or slipped. Seems like its getting worse. Any ideas what could have happened? Also the car has no mods that I know of. Thanks in advance and hello to everyone.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Possible problem after suspension install?	max20s14	Suspension \| Chassis \| Brakes -- Sponsored by 949 Racing	7	12-19-2016 01:43 PM
2015 frs (fit rear camera) problem	sroby	Electronics \| Audio \| NAV \| Infotainment	2	01-20-2016 06:49 PM
Was looking at this set up. Will i have a problem fitting my 2015 RS1 ??	ChuckButta	Wheels \| Tires \| Spacers \| Hub -- Sponsored by The Tire Rack	0	10-09-2015 01:43 PM
Suspension problem	Border7	Suspension \| Chassis \| Brakes -- Sponsored by 949 Racing	14	10-17-2014 05:03 PM
I need info and help with suspension problem	kkkirbyyy	Suspension \| Chassis \| Brakes -- Sponsored by 949 Racing	4	12-26-2013 11:37 PM

10-05-2020, 01:55 AM	#2
Griever423 Senior Member Join Date: Jan 2012 Drives: 2020 BRZ PP Location: DFW Posts: 215 Thanks: 146 Thanked 54 Times in 45 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Could be an alignment issue. Maybe a toe issue. I'd get the alignment checked ASAP.

10-06-2020, 07:11 AM	#3
thomasmryan Senior Member Join Date: Jan 2016 Drives: hyper blue Location: east tn Posts: 401 Thanks: 166 Thanked 260 Times in 154 Posts Mentioned: 2 Post(s) Tagged: 2 Thread(s)	36 psi all the way around? look at your rear sway bar pickup points/end links or post a picture.

10-06-2020, 10:21 AM	#4
ZDan Senior Member Join Date: May 2011 Drives: '23 BRZ Location: Providence, RI Posts: 4,597 Thanks: 1,382 Thanked 3,909 Times in 2,039 Posts Mentioned: 85 Post(s) Tagged: 0 Thread(s)	Are you getting any warning lights? I had an incident at the track a few weeks ago where a yaw sensor went bad (apparently). It seemed cause the front left to be overworked under hard braking. No lights at this point. Then the VSC warning light came on, and at the next braking zone it just locked the front left, then both fronts :O You might try removing the 40A ABS fuse and see if the car behaves normally. It could be that the VSC is confused and is applying asymmetric braking to "fix" things...

10-06-2020, 11:56 AM	#5
p1l0t Senior Member Join Date: Jan 2016 Drives: 2016 Subaru BRZ Hyperblue Location: West Hartford, CT Posts: 8,417 Thanks: 22,577 Thanked 9,374 Times in 4,814 Posts Mentioned: 58 Post(s) Tagged: 1 Thread(s)	Ever since I shut my nannies off I stopped getting annoying lights on during hard turns. Sent from my SM-G975U using Tapatalk

10-06-2020, 05:30 PM	#6
av8rdav Junior Member Join Date: Oct 2020 Drives: 2015 Subaru BRZ Limited no mods Location: Northern California Posts: 9 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	No warning lights. I'm taking it to Subaru tomorrow.

10-07-2020, 09:46 AM	#7
CrowsFeast Senior Member Join Date: Jun 2019 Drives: 2013 BRZ Sport-Tech Location: Toronto Posts: 354 Thanks: 184 Thanked 179 Times in 121 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Sounds like a bushing to me, but this is also the typical 'diagnostic via internet' dilemma.

10-07-2020, 10:10 PM	#8
av8rdav Junior Member Join Date: Oct 2020 Drives: 2015 Subaru BRZ Limited no mods Location: Northern California Posts: 9 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Took the car to Subaru and they drove it and diagnosed it as a bad VSC (VDC) Control Module. Only about $1500 for that part. Thanks to those who responded.

10-08-2020, 08:28 PM	#10
p1l0t Senior Member Join Date: Jan 2016 Drives: 2016 Subaru BRZ Hyperblue Location: West Hartford, CT Posts: 8,417 Thanks: 22,577 Thanked 9,374 Times in 4,814 Posts Mentioned: 58 Post(s) Tagged: 1 Thread(s)	OUCH I guess that's not something you can just find on the bay eithet. Sent from my SM-G975U using Tapatalk

10-08-2020, 11:35 PM	#13
norcalpb Senior Member Join Date: Oct 2013 Drives: 2013 BRZ, 2023 Model 3 Location: SF Bay Area Posts: 2,297 Thanks: 1,219 Thanked 863 Times in 570 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Is this what they replaced?

10-09-2020, 08:11 AM	#14
Ragin Gti Member Join Date: Jan 2017 Drives: '15 Subaru BRZ Location: Pittsburgh Posts: 93 Thanks: 8 Thanked 58 Times in 35 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I doubt that’s what’s wrong, sounds more like a wheel speed sensor. I’d call Subaru customer service (1-800-Subaru3) and ask for financial assistance. Customer service will often offer to help pay for a repair. Sent from my iPhone using Tapatalk

User Name		Remember Me?
Password