Brakes lock up once car warms up

MWATLING

MEMBER
2006 VOLKSWAGEN JETTA
2.5L
5 CYL
2WD
AUTOMATIC
132,000 MILES

I have this vehicle that’s been sitting for a couple years. All four brakes are dragging after car gets warmed up. If the car sits, the brakes will eventually release.
Put on new vacuum pump, new fluid, and replaced all rotors, calipers, and pads.
I can’t seem to figure out what’s wrong.

1 Reply

KASEKENNY1

EXPERT

This is an odd issue so we need to get a few more details to fully understand.

If you go start the vehicle and never touch the brake pedal, do the brakes lock up? I assume they do not. So does that mean they are applying and not releasing the first time you are pressing the pedal?

If this is the case, are you sure it is all four wheels? Let's lift the vehicle and make sure it is all the wheels and if not which ones are not releasing?

https://www.2carpros.com/articles/jack-up-and-lift-your-car-safely

I am thinking this is one of two issues depending on these questions. First if it is all the wheels then the issue has to be something that affects all the tires which would be the master cylinder.

https://www.2carpros.com/articles/how-to-replace-a-brake-master-cylinder

If it is just one or two wheels then I suspect we have an issue with the rubber brake line that is swelling and not allowing the caliper to release.

Let us know what you find with this and we can go from there. Thanks