Exception in rendering!

Message: window is not defined

ReferenceError: window is not defined
    at new c (/tmp/execjs20161208-83728-1696ym8js:136:3912)
    at m.mountComponent (/tmp/execjs20161208-83728-1696ym8js:47:15602)
    at /tmp/execjs20161208-83728-1696ym8js:49:31860
    at a.r.perform (/tmp/execjs20161208-83728-1696ym8js:47:12503)
    at Object.a [as renderToString] (/tmp/execjs20161208-83728-1696ym8js:49:31821)
    at r (/tmp/execjs20161208-83728-1696ym8js:50:21164)
    at Object.S.ReactOnRails.serverRenderReactComponent (/tmp/execjs20161208-83728-1696ym8js:32:6073)
    at eval (eval at <anonymous> (/tmp/execjs20161208-83728-1696ym8js:173:8), <anonymous>:10:23)
    at eval (eval at <anonymous> (/tmp/execjs20161208-83728-1696ym8js:173:8), <anonymous>:17:3)
    at /tmp/execjs20161208-83728-1696ym8js:173:8

Q: Rear brakes are dragging

asked by on

Both sides of my rear brakes are dragging. It doesn't seem to be the calipers. I jacked up the car and put the car in park, and there is some drag. I put it in neutral and there was a lot of drag. I noticed it the first time a few months ago after driving the car, and the left rear disc was very hot. Then, I drove home and it didn't get hot at all and it was cool to the touch. Occasionally it will drag and occasionally it will not.

Could it be electronic? I checked the brake pads and they are wearing mostly even. The passenger side was not as worn, but it also has not been dragging as often as the driver's side has. Which is why I feel like it is not the master cylinder. I disassembled and reassembled the passenger side. The slides seemed like they are not the problem, but I cleaned them. The ears on the pads and the clips were heavily corroded, so I cleaned them up as well so they are able to move more freely. I had to pry the outside pad off of the rotor as it was riding very close and dragging the rotor.

I talked to a local mechanic, and they said that they see a lot of cars with disc brakes that just get corroded and then won't release off the rotor, which is caused by the road salt and moisture. I am going to take the wheel off of the passenger side and see how that looks. I may try to readjust the pedal/pushrod to make sure it is not too tight. I took apart the driver's side and I noticed that the outside pad was worn a lot more than the inside pad was. The ears were also more corroded on the outside pad. I did not adjust the caliper since the 2012 Taurus requires the proper tool to twist it back in.

I might install new pads and pick-up the tool to adjust the caliper back in. Should I install new rotors? Any other ideas?

A: Based on your description, it sounds like y...

Based on your description, it sounds like your parking brake may be locking up on your rear brakes. I would recommend having your rear brakes disassembled and, using the special tool you referred to, try to compress the caliper. If the caliper is very difficult or refuses to compress, the caliper is sticking up and will require replacement in order to fix the problem.

It is not a requirement, but it is a good idea to replace all brake parts in pairs. With this in mind, it would be a good idea to replace both rear calipers. For best results, ensure that this job is performed by a certified mechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Have original spark plugs in my 2009 Taurus with 129000 miles. Car runs good, gas mileage good. Should they be changed?

If you have had the vehicle since it was new and never had the spark plugs replaced then I would recommend getting them replaced. You could have a mechanic like one from YourMechanic come to you and replace them. The...

Q: 2016 Mercedes-Benz cls63 AMG what do I have to do to draw the rear caliper in to do a brake job?

To begin with, it's surprising to me that a 2016 car should already need rear brake pads. Most cars go through two sets of front pads for each set of rear, and the front pads are usually good for 30...

Q: Needed brakes car would go in reverse but wouldn't move finally did but super loud metal to metal sound

Hello. If the brakes sounded that bad then chances are that the pad may have come loose and jammed between the brake pad bracket and the rotor. It is also possible that the caliper piston came out of its bore....

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.