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Old 05-21-2020, 06:20 PM   #1
Haevn
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Join Date: Jan 2019
Location: Augusta, GA
Vehicle:
2011 WRX
WRB

Default 2011 wrx only hiss assist light on

hey, just out of the blue my hill assist light came on, no codes in ap. after a few days the light will go away then randomly come back on a day or 2 later. i pulled some codes off my snap on and got c0075, c0047 and u1221. all these codes are in history. anyone else have this issue?

thanks
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Old 06-11-2020, 01:20 AM   #2
2010bluesti
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I'm having the same problem with my STI. Can't turn hill assist on.
There's no codes though.
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Old 06-11-2020, 09:00 AM   #3
Jefe159
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Chapter/Region: MWSOC
Location: Cincinnati
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2011 STI
Gray

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I believe when the light is on it means hill assist is off? My 2011 has had the light on since the day I bought the car. When the light comes on does the hill assist turn off? When the light turns back off does the hill assist come back on? It is only the light that is malfunctioning?
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Old 06-11-2020, 09:10 PM   #4
Haevn
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if light is on hill assist doesn't work, i think my issue is with the reverse switch because when light is on my back up lights don't work, i checked all fuses and all are good
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Old 06-13-2020, 04:47 PM   #5
2010bluesti
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Quote:
Originally Posted by Haevn View Post
if light is on hill assist doesn't work, i think my issue is with the reverse switch because when light is on my back up lights don't work, i checked all fuses and all are good
I just checked and it seems like we are having the same problem. My revserse light is not on as well.
Let me know how you fix your reserse switch.
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Old 06-13-2020, 07:37 PM   #6
Haevn
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mine went off after banging reverse a bunch of times with car off lol other then that i was going to replace switch since it was only like 25 from dealer and its easy to do since its on the side of the tranny and not on the top like the 6spd
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Old 06-13-2020, 07:50 PM   #7
2010bluesti
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Quote:
Originally Posted by Haevn View Post
mine went off after banging reverse a bunch of times with car off lol other then that i was going to replace switch since it was only like 25 from dealer and its easy to do since its on the side of the tranny and not on the top like the 6spd
mine is the 6spd one. I guess I'll just live with it.
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