Skip the auto shop - Our mechanics make house calls

Q: Brakes randomly locking up.

asked by on

At random times, the brakes lock up for no apparent reason. I recently had the brakes and ABS module worked on.

A: Hi there. Your ABS system should keep the b...

Hi there. Your ABS system should keep the brake from locking up if it is working properly. With that being said, you may get different wheels braking at different times if the ABS unit sees the need to cycle the brakes at each wheel for better and safer braking. Some people feel like this is the brakes locking up. If the brakes are indeed locking up then there is a malfunction. If the ABS light is on then the system is turned off by the computer because of a malfunction. If the light is off then you may have an issue with a failing wheel speed sensor, yaw sensor, or even a mis-matched tire size. To diagnose this a mechanic would need to install a scan tool and monitor the inputs of the sensors to see if one or more of them are acting up. You should get some help from a certified mechanic that has the tools to do this, like one from YourMechanic.

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: Door lock not working

If none of the locks work manually, you're using the wrong key, or somehow the key has been damaged. A key from one Honda vehicle will easily slip into the lock cylinder of another, but then won't unlock the door....

Q: Car started losing oil and wouldn't accelerate

Hi there. From the description you have provided your vehicle's loss of oil needs to be repaired, before you continue driving, or this could result in catastrophic failure. The severe oil leak needs to be diagnosed and repaired, as soon...

Q: Multiple systems out

From the description provided, appears that the Lincoln Town Car has multiple, independent issues. To look into the ABS light, you will need a scanner that can scan the ABS computer. The codes that are revealed by this scanner will...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...