Member
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Join Date: Jun 2015
Location: Austin, TX
Posts: 294
Real Name: Tyler
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Member
Join Date: Jun 2015
Location: Austin, TX
Posts: 294
Real Name: Tyler
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Unusual Brake Problem
Recently started experiencing an odd brake problem, searched for similar symptoms here but couldn’t find anything. Bit of history 1st.
The MIL/VSC/TRAC lights have been illuminated for some time. I’ve had the codes read on several occasions and it has consistently been the MAF sensor. Tried cleaning it, no luck, but the truck runs fine so I haven’t bothered to do much else. About 20,000 miles back the Brake warning light came on. I checked and the pads were nearing their end so I replaced all four sets, completely flushed the system with new fluid, nothing was stuck or hung up so I buttoned it all back together and while the light didn’t go away, the brakes work great, ABS engaged when needed, so again I moved on with life. FWIW I used the brake pump to bleed the rears as detailed here.
Fast forward to last weekend, we’ve had a lot of rain recently in central Florida and one morning I got in to drive to work and noticed the Brake light was gone, but the brakes were snatchy and the pedal was vibrating. I figured the brakes was wet from storms overnight, and after a couple of stops the Brake light came back and the brakes started working well again. Brake fluid res is still full.
TL: DR Brakes are snatchy and pedal is rough when Brake light is off, brakes work fine when Brake light is on, MIL/VSC/TRAC all on.
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2008 4Runner SR5 V6 4WD
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