Skip the auto shop - Our mechanics make house calls

Q: Emergency brake light won't stay on. If really cold in the morning, it's out until I drive for about a mile or so

asked by on

The brake light on my dash stays on all the time....sometimes when driving the truck starts to shack bad, but if I slow down it stops. brake fluid level fine, no leaks and brakes normally. E-brake only can be pushed half way down

My car has 150000 miles.
My car has an automatic transmission.

A: Hi there. Check the cables to the parking ...

Hi there. Check the cables to the parking brake when you set the parking brake. There is a parking brake sensor attached to the pedal and if the sensor is tripped, the indicator brake light will come on the dash.

It seems that the parking brake is being engaged when you are driving and causing a slight shake due to brake linings and runout on the rotors or drums. Check the cable for anything making it lodged or binding.

Also, raise up the vehicle and with the rear wheels off the ground, check to see if the wheels will spin easy. If they do not spin easy, then the parking brake is engaged and needs to be checked for if the brake is releasing.

If the cable is loose with the pedal up and the tires will not turn easy, then the rear brakes need to be adjusted or the hardware needs to be replaced to fix the parking brake. If you need further assistance diagnosing your parking brake, then seek out a professional, such as one from YourMechanic, to help you with your vehicle.

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 recently replaced my U-Joints on my driveshaft and now my car vibrates, it gets worse the faster I'm traveling.

Hi there. Did the U-joints you installed have grease fittings and did you fill them with grease prior to driving? I know this is a basic step, but one that often gets forgotten. Dry bearings inside the u-joints wont last...

Q: Engine hesitating during startup

Hello. It is not normal for your engine to be at 450 RPMs. This could be an indication that there is a loose or disconnected vacuum line or a vacuum leak from the intake. It is also possible that there...

Q: How to diagnose coded p0352,0352,0353, already had new plugs and coils before code throw

Hello. The codes listed are for problems with the electrical circuits of ignition coils A, B, and C. If the coils have been replaced it may be possible that the wiring to them is the source of the issue. You...

Related articles

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 Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...