Skip the auto shop - Our mechanics make house calls

Q: Why would my passenger side drum brake engage when I'm not touching the brake pedal and then release?

asked by on

When driving my passenger side drum brake will engage by itself slow the car down and then release and sometimes it catches again.

My car has 102000 miles.
My car has an automatic transmission.

A: Do any warning lights come on when this hap...

Do any warning lights come on when this happens? If you are having an issue with the ABS system (which is kind of unlikely), or an issue with the brake sensors the vehicle will likely set codes which can be read in a scan.

This could also be from a bad yaw sensor. The yaw sensor detects certain angles of tilt during a turn. If it is calibrated incorrectly, it will cause the brakes to engage to correct the tilt. The yaw sensor will need to be replaced if it is found to be faulty. You will also want to check for any kind of mechanical issues. This would include any loose retaining bolts or guides, rusted out or damaged components, or anything bent or out of shape. If you would like to have a professional inspect the brake system, a certified technician from YourMechanic can come to your car’s location to have this taken care of.

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: I'm wondering where my neutral safety switch is

On most models, Toyota locates the neutral safety switch on the transmission itself, adjacent to the shifter cable. If you end up needing some help for the job, consider YourMechanic, as a certified technician can help you replace your...

Q: Reduced power in car

The reduced power warning generally indicates the failure of an electrical component vital to engine operation. These warnings can trigger fault codes that can be scanned and read by trained technicians. Typically, a throttle position sensor or engine component sensor...

Q: Car stalls when pressing brake pedal

An experienced technician will be able to determine whether the stalling is directly connected to the application of the brake pedal. The vehicle is equipped with a brake booster which uses engine intake manifold vacuum to offer power assisted braking....

Related articles

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...