Why is my 2009 Jetta’s rear rotor overheating after repairs?

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May 19, 2025 at 8:02 pm #2014 Reply
Jose
Need some advice here fellas… 2009 VW Jetta SportWagen 2.5l motor — 176xxx on the dash.

Just did new brakes, rotors, bled the brakes all the way around new struts in front and new coil overs in back.

Two of the 4 brake calipers were seized, so I changed them too. Took it for a drive after all the work was done, had a “wobbling” noise only on acceleration in the front of the car. Was rainingg here all day yesterday, I must of hit a puddle of water when I parked it back up cause I noticed the passenger side rear rotor was sizzling hot.

Any ideas on what would cause this?
May 19, 2025 at 8:05 pm #2015 Reply
Eric
Brake is stuck on. Need to strip it to find the cause. Only 4 main problems.
1. Release the bleed nipple or brake pipe. If this frees the brake, replace the brake hose.
2. Check piston.
3. Check slides.
4. Check pads are free to move in the carrier.
May 19, 2025 at 8:06 pm #2016 Reply
Daniel
Was one of the seized calipers on the rotor you’re now having trouble with?
May 19, 2025 at 8:06 pm #2017 Reply
Daniel
Rubber brake hoses. Old brake hoses swell inside and don’t allow the fluid to move through like it’s supposed to.
May 19, 2025 at 8:06 pm #2018 Reply
AL EX
To me, it looks like you have the wrong brake discs. It’s difficult to see. It would look like it have the 2.0L 253mm rotors, which should be 258mm rotors. I’m judging this by the breather caliper, that is how this is set up in Canada. US models may have different setup, check that your pads are running on the rotor and not hanging over it.
May 19, 2025 at 8:06 pm #2019 Reply
Leon
Check brake hoses for restrictions.
May 19, 2025 at 8:07 pm #2020 Reply
Corey
The rubber lines going to the calipers. They collapse on the inside so you won’t see it. Not saying that’s what it is, but it would cause rhe caliper to not work properly. I’d go to that if you’re still having a siezed caliper
May 19, 2025 at 8:07 pm #2021 Reply
Dain
Undue the parking brake cable to make sure that is not grabbing just a little bit that is a common issue and most people think caliper is bad. Assuming you just had the parking brake on to do the fronts. They make the pads touch slightly and give a wobbly or whooping sound, almost like a bearing is starting to go bad.
May 19, 2025 at 8:07 pm #2022 Reply
Geff
Anti seize the slides for the brake pads.
May 19, 2025 at 8:08 pm #2023 Reply
Corey
The rotors come from the factory with all that machine oil on them. I always spray the shit out of them and clean them good when installing. The wobble I’m unsure of. The calipers bleed fine?
May 19, 2025 at 8:08 pm #2024 Reply
Corey
Is the bleeder screw on top of the calipers when installing? They do make a left and a right. If the bleeder screw is on the bottom, you got the wrong side caliper. However normally they won’t bleed when that happens.
May 19, 2025 at 8:08 pm #2025 Reply
Ken
Was the caliber seizing when you stopped? Tgat looks like a old caliper. You could have clips on wrong as stated above, or that caliper could be bad, but I would almost bet that the rubber brake line is bad.

I’ve repaired those lines almost as often as I have replaced calipers.

Usually, if the caliper is seizing, it will free up after sitting a little bit.

The rubber line just allows the caliper to stay a little tighter than it should while driving, and you will feel a wobble.
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