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Old 02-07-2019, 02:24 PM   #1
Scooby Newbie
Member#: 417287
Join Date: Mar 2015
Chapter/Region: Tri-State
Location: Philly
2015 WRX
WR Blue

Default VDC Light and Hill Assist Light On. ABS Light Off.

I wanted to share a problem I had that i just solved. I couldn't find anything on the internet about this issue.

2015 WRX 6MT. I had the VXMOTOR JDM Red Lens Rear Fog Light Lamp that you can get from amazon. I had it on my vehicle for 2.5 years. Recently my VDC and Hill Assist lights came on and stayed on. No ABS light though.

My snap-on scan of course couldn't pull the right body codes from the vehicle so i had to bite the bullet and take her over to the dealer.

He pulled a "Stop lamp switch code". I'm blanking on the code number. It may have been an ABS code 54 or 55.

He wanted to sell me a new stomp lamp switch. I know the fozzys have had problems, but i haven't really heard of the 15+ WRXs having issues with that switch.

He ordered the switch and i went on my way. I was going to come back and get the switch and install it myself. BUT..... I had the idea to just put my brake wiring back to stock before installing the switch...so I disconnected the 4th brake light or rear fog (whatever name you wish to call it).

After clearing the codes the lights never came back on. They have been off for 3 weeks now.

What happen was the 4th brake light unit failed somehow and was back feeding voltage to the module, confusing the heck out of it. The module didn't know what was going on with braking, so it disabled the VDC and Hill assist.

Please be aware of this issue and this product. It is the cheapest one you can find on the internet, so i guess you get what you pay for.
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