2012 Odyssey, 60k miles, had all 4 rotors and pads replaced at local independent shop. Drove home parked in garage, next day pulled out into drive way to do annual deep clean and noticed fresh spot in garage of a fluid leak. Popped hood and eventually saw what seems to be a leak from back of master cylinder.

Question is would something done improperly on brake job cause the leakingbof Master cylinder? I mean, wasn't leaking before in this spot under vehicle otherwise would have noticed on garage floor. The fluid reservoir is almost full as I just had the fluid changed out at dealer earlier this year. I am sure the shop will just say it is a coincidence when I call the shop tomorrow, what say you texags experts?

My guess would be semi-related but not the fault of the shop you used. We had a 2011 Odyssey that had its master cylinder replaced for the same leak failure somewhere between 60k and 70k. Happened on its own though, not related to brake work.

If that's what happened, anynway to prove it?

jsc8116 said:

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If that's what happened, anynway to prove it?

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Nope.

But I wonder if a shop would even normally bleed the brakes with a pad and rotor swap. Unless you also paid to have a brake fluid flush I would think they would simply open the Master Cylinder reservoir and extract fluid if pushing the caliper pistons back in was going to displace too much fluid. No need to bleed in this case.

I don't let other people touch my brakes, so I don't know what is standard. But I certainly think there would be line item charge for a fluid flush / bleed if they did one.

But I suppose if you told them the pedal felt soft when you took it in they would certainly bleed the system to try and remedy that complaint, but again I would assume you would see a line item charge for that on the bill.

SCHTICK00 said:

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Most likely it's from an overfull reservoir. If the MS was topped off prior to the brake job with worn pads, all the fluid from extended pistons had to go somewhere. I've had this happen before

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they should have removed the cap before pushing the pistons back in.