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Old 11-16-2018, 01:30 PM   #1
cdigerlando
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Default 2015 STi Power Steering Leak

So my STi with 65k and no mods, mildly driven, has a power steering leak where the steering wheel shaft enters the power steering assembly. I've ordered the necessary seals to repair it, but it is concerning that this has failed so quickly. My previous car was a mildly tuned 02 WRX that never had any steering problems in the 213k that I owned it. Before that I owned (and still own) a '92 SVX, that never had steering issues, except for the o-ring fix.

The steering in this car always seemed a bit wonky. The car would stall real easy in a hard turn right or left from 0. I know the improved ratio is something that most of the racecar drivers appreciate, but I never liked the feel of it. And now that the system has failed so prematurely I've very concerned.

I discussed it with Subaru, and they would not repair it for free, so they will not be doing the work. I will instead be having the work done by a non-dealer, who I trust.
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Old 11-19-2018, 02:33 PM   #2
Big D's 02 wagon
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Quote:
Originally Posted by cdigerlando View Post
So my STi with 65k and no mods, mildly driven, has a power steering leak where the steering wheel shaft enters the power steering assembly. I've ordered the necessary seals to repair it, but it is concerning that this has failed so quickly. My previous car was a mildly tuned 02 WRX that never had any steering problems in the 213k that I owned it. Before that I owned (and still own) a '92 SVX, that never had steering issues, except for the o-ring fix.

The steering in this car always seemed a bit wonky. The car would stall real easy in a hard turn right or left from 0. I know the improved ratio is something that most of the racecar drivers appreciate, but I never liked the feel of it. And now that the system has failed so prematurely I've very concerned.

I discussed it with Subaru, and they would not repair it for free, so they will not be doing the work. I will instead be having the work done by a non-dealer, who I trust.
I had the same thing happen with my 2015 sti. I had 42k. I also drive it the same as you. Instead of repairing I just replaced the whole thing. I also got the same answer from Subaru. Just wanted to share. Good luck with the repair.
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Old 11-20-2018, 03:53 PM   #3
cdigerlando
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Quote:
Originally Posted by Big D's 02 wagon View Post
I had the same thing happen with my 2015 sti. I had 42k. I also drive it the same as you. Instead of repairing I just replaced the whole thing. I also got the same answer from Subaru. Just wanted to share. Good luck with the repair.
Thanks for responding, and sorry to hear about your misfortune as well. I wonder if there was an assembly issue with these, if we are the only ones that seem to have had this problem. Hopefully this doesn't happen again soon.
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Old 12-05-2018, 10:54 AM   #4
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Default Repair Update

So I had the repair done. New seals seem to be holding well. I also did the Perrin steering lockdown kit. Which is just stiffer bushings.

I like the change in the feel. The car seems to hold a line better without a lot of correction needed. A bit stiffer to turn, but not bad, and a good feel, in my opinion. I've always felt that the stock feel was wonkie on this car. Another friend who has owned other STi's felt the same. Hopefully these seals hold.

I'm also going to replace the o-ring on the pump just in case. I will do this myself. Pump is still noisy when it is cold, and I'm afraid it is getting air in the system.
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Old 12-06-2018, 06:46 AM   #5
SamsMK
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if you havent fixed this yet, i have a rebuilt one im trying to sell.
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Old 12-06-2018, 02:45 PM   #6
cdigerlando
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if you havent fixed this yet, i have a rebuilt one im trying to sell.
Thanks. It's been fixed.
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Old 12-06-2018, 02:48 PM   #7
cdigerlando
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Quote:
Originally Posted by Big D's 02 wagon View Post
I had the same thing happen with my 2015 sti. I had 42k. I also drive it the same as you. Instead of repairing I just replaced the whole thing. I also got the same answer from Subaru. Just wanted to share. Good luck with the repair.
If you don't mind my asking, how much did it cost to replace? It cost me $386 to have it repaired. That was not done by Subaru. The parts for the lockdown kit were about $70.
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Old 12-06-2018, 02:59 PM   #8
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Quote:
Originally Posted by cdigerlando View Post
If you don't mind my asking, how much did it cost to replace? It cost me $386 to have it repaired. That was not done by Subaru. The parts for the lockdown kit were about $70.
I opted to have the whole steering rack replaced. So after parts and labor I was at about 1k.
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Old 12-06-2018, 03:14 PM   #9
ProZach626
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My 15 STI was harder to steer to the right than it was to the left. It never felt right. It also developed some suspension issues, which I'm convinced that the issues are somehow intertwined. After all was said and done, after about a year of trying to fix the issue, Subaru offered me 4k toward another Subaru, prior to negotiations. Despite my issues, I love the STI line so much I am now driving an 18 STI. However, even the stearing on my 18 doesn't feel completely right.

It's a long read, but it sounds like I wasn't the only one experiencing steering issues.

https://www.clubwrx.net/forums/gener...der-right.html
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Old 12-06-2018, 03:15 PM   #10
Waddlz
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I was worried the 15+ were going to leak also. my 2012 started leaking at 60k and I replaced the rubber piece, it lasted 8 months and is leaking again.
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Old 06-13-2019, 02:26 PM   #11
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I recently had this problem diagnosed by the dealer on my 2015 sti. I was told that the cost of replacement and installation was 1800 and some change. Car only has 29k miles on it. Super disappointing to say the least
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Old 06-13-2019, 02:51 PM   #12
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Quote:
Originally Posted by Swpsti2013 View Post
I recently had this problem diagnosed by the dealer on my 2015 sti. I was told that the cost of replacement and installation was 1800 and some change. Car only has 29k miles on it. Super disappointing to say the least
Go anywhere else and let someone who isn't out to rape you do the work. You may be lucky enough to find a local subie bro who can help you out for a case of beer and a pizza.
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Old 06-13-2019, 02:53 PM   #13
cdigerlando
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I'm not thrilled with the feel of the steering on the 15. I know race car drivers love it but I'm not racing. Some things need to stay street, and reliable. That's primarily why I got a Subaru. Guess I need to get an outback next time.
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Old 06-13-2019, 02:55 PM   #14
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Quote:
Originally Posted by Turpid Porpoise View Post
Go anywhere else and let someone who isn't out to rape you do the work. You may be lucky enough to find a local subie bro who can help you out for a case of beer and a pizza.
Whats the normal hours needed to remove and replace a steering rack. Part is 1k find it hard to believe it would be 800 in labor
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Old 06-13-2019, 05:00 PM   #15
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The WRX STI rack from 2015-2017 superseded PN: 34110VA121 lists for approximately $713 and includes tie-rod ends.

*******

I have had issues where the steering feels as if its binding at a full-stop until the car is moving and the fluid warms-up.

I also change the fluid about three-times-a-year by siphoning out the reservoir, filling it, running the engine, turning the steering back-and-forth, and doing this four times during that one service.
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Old 10-29-2019, 10:49 AM   #16
EvoXtoWRX
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I know this last post is 4 months old but, I am at the dealer now for this issue for the STI RACK P/N: 34110VA121. My car has 43k miles on it. Its making a awful chirping/squeal noise when I'd backup and turn out of my driveway in the morning everyday. I'd love to know what the REAL problem that causes this. I don't really want to pay $713 if its not a rush.

Subaru's reasoning for needing a new rack is my STI has HKS coilovers that are dropped an 1" all around. I find this very hard to believe.
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Old 10-29-2019, 02:26 PM   #17
cdigerlando
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Quote:
Originally Posted by EvoXtoWRX View Post
I know this last post is 4 months old but, I am at the dealer now for this issue for the STI RACK P/N: 34110VA121. My car has 43k miles on it. Its making a awful chirping/squeal noise when I'd backup and turn out of my driveway in the morning everyday. I'd love to know what the REAL problem that causes this. I don't really want to pay $713 if its not a rush.

Subaru's reasoning for needing a new rack is my STI has HKS coilovers that are dropped an 1" all around. I find this very hard to believe.
Yes...that sounds like BS to me too. That has nothing to do with it if it is a leak in the seal. I had it fixed by a friends shop for $386, It involves removing the rack and replacing the seal. I just didn't have time to do it.
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Old 10-29-2019, 08:43 PM   #18
BluPrynt78
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Default

17 STi and just had mine repaired at Subaru.
Only had 34.5k miles on it.
They had to replace the whole unit.
Crazy thing is that I traded my 14 STi back in March and it was suffering from the same issue with 70k miles.
I have 1500 more miles or until March 2020 before Iím out if warranty ***129310;***127997;
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Old 10-29-2019, 08:45 PM   #19
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I should also mention that I have ZERO mods done to the suspension.
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Old 11-04-2019, 02:20 PM   #20
SubyManV7
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Default 2013 WRX STi with spool valve input seal leak

So my 2013 with 54K miles just started leaking. I have researched this issue and was leaning on doing the 2015 quicker ratio replacement until I read some posts about having issues with DTC and traction control...
What I want to know is with this many folks having the same issues for leaks at the same place, why doesn't Subaru do a TSB or recall about it?
Where do you find the dimensions for the seal if you want to replace it yourself? Do you need any special tools to replace the seal? Thanks up front!
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Old 02-15-2020, 04:51 PM   #21
ScuubyT
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My 2015 STI just started leaking, same as OP. Can someone tell me where you can buy the seals? I'm not having luck finding them so far.
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Old 02-15-2020, 07:17 PM   #22
SubyManV7
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Default seal kit part number

34191VA000
found it in the remarks of a you tube video...otherwise not sure how you get this number.
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Old 02-16-2020, 04:36 PM   #23
SubyManV7
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Default Money well spent

Quote:
Originally Posted by cdigerlando View Post
Yes...that sounds like BS to me too. That has nothing to do with it if it is a leak in the seal. I had it fixed by a friends shop for $386, It involves removing the rack and replacing the seal. I just didn't have time to do it.
As someone who did the work of removing the rack and pinion and replacing the seals, if they charged $386 thatís a bargain!
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Old 02-19-2020, 06:14 PM   #24
cdigerlando
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Quote:
Originally Posted by SubyManV7 View Post
As someone who did the work of removing the rack and pinion and replacing the seals, if they charged $386 thatís a bargain!
I agree. But a much easier project to do with a full shop with a lift and the right tools.
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Old 02-19-2020, 09:30 PM   #25
ScuubyT
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Quote:
Originally Posted by SubyManV7 View Post
34191VA000
found it in the remarks of a you tube video...otherwise not sure how you get this number.
I looked up this part and it doesn't quite look right, although I haven't taken the rack out yet to be sure. I think the seal I need has two bolt holes in it, similar to an exhaust gasket. As someone who's been in there, does that sound right?
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