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Leak at caliper / air in system?

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New User

Jun 26, 2017, 5:44 AM

Post #1 of 4 (690 views)
Leak at caliper / air in system? Sign In

So I changed the rotors and pads on my wife's 2012 Toyota Sienna. When I got to taking the last rear caliper off, I accidentally loosened the screw holding the hose to the caliper, instead of the caliper pin bolts. A little brake fluid leaked out before I was able to tighten that bolt back up. I never bleed the system at all when I change brakes, and I did pump the brake and take it for a test drive. Everything seemed fine.
But, what have I potentially done to the system by letting that leak slightly for a few seconds? Could I have gotten air in the system? Should I be taking the vehicle for a brake fluid service / bleed to make sure? Is it potentially dangerous to drive?

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jun 26, 2017, 5:59 AM

Post #2 of 4 (681 views)
Re: Leak at caliper / air in system? Sign In

You definitely should have at least bled that wheel. It is highly likely you got at least a little air into that caliper. That would have been very quick and simple at the time you did the work but now after driving it around, the air likely moved around the system and all wheels should be bled now.


We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

New User

Jun 26, 2017, 6:29 AM

Post #3 of 4 (668 views)
Re: Leak at caliper / air in system? Sign In

Thanks for the quick response. Gonna get somebody to do that asap. Better safe.....

Tom Greenleaf
Ultimate Carjunky / Moderator
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Jun 26, 2017, 6:31 AM

Post #4 of 4 (662 views)
Re: Leak at caliper / air in system? Sign In

Totally yes do that. It's actually really a good thing to have good new fluid - parts exposed to it last lots longer,

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