Skip the auto shop - Our mechanics make house calls

Q: front brakes locking up

asked by on

When the temperature outside reaches 85 degrees or more, my front brakes will gradually start to lock up and I must pull over and let them cool down. I park on hills and I can hear them releasing after about 20 minutes. Im clueless.

My car has 154697 miles.

If your front brakes are locking up after getting warm, then you will need to have the system inspected while they are locking to see if the master cylinder is holding pressure to the brakes, the calipers are not releasing, brake hoses are getting blocked, or the brake booster is pushing on the master cylinder partly.

In order to test the components, you would first need to crack the brake line at the master cylinder to see if it releases the fluid. If not, then it is in the hoses or calipers, and the bleeder should be opened to see if it releases. If it does, then it needs hoses. If it does not, then the caliper pistons or slide pins are binding.

I recommend that you have this issue taken care of soon since your brakes are pivotal to your vehicle’s safety. A certified technician, such as one from YourMechanic, can come to your car’s location to diagnose your braking issue and let you know what needs to be done.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Why does my red brake light with exclamation mark show up when I start my 2004 Audi A4

Hello. This can be caused by low brake pad lining or by low brake fluid. I would usually start by checking the brake fluid level. If the fluid level is low then it will cause this light to come on....

Q: Can 2 serpentine belts need replacing within 11 years and can the alternator suddenly fail without warning ?

Hello. There is a huge variance in manufacturer estimates of serpentine belt lifetime. This is understandable because operating conditions vary, vehicle designs vary and the belt material will degrade at different rates. You should get at least 50,000 miles out...

Q: Vehicle will not start

Hello. Thank you for writing in. Looking to the spark system for a no start situation. The screw driver trick is one way to test for spark. This is not the safest way to test, but does work. Once the...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.