Skip the auto shop - Our mechanics make house calls

Q: no brakes at all

asked by on

When i press on the brake pedal, the pedal goes all the way to the floor and the brakes do not engage. So if the car is in drive, the brakes will not press into the rotors. I replaced the brake master cylinder and bench bled it. I have bled the lines at the wheels as well. If I take the calipers off of the rotors and press the brake pedal the calipers will move out like there supposed to. But on the car, they don't have any pressure to stop the rotors. Could this be air in the ABS or a bad ABS module? Is there a way to test the ABS module without a scan tools?

My car has 131000 miles.
My car has an automatic transmission.

There is no way to activate the ABS bleed function without a scan tool that has the ABS bleed function capability. Not all scan tools can do this. You most likely do have air trapped in the system and the only way to get it all out is to put the ABS in the bleed setting. You may have to use a pressure bleeder to push enough fluid through and push out the air. If you’d like assistance, a certified YourMechanic technician can come to your location to perform an inspection of your brake pedal issue or help you bleed your brakes.

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: Unable to start after it rains or misfires until the engine heats up in high moisture conditions

Hey there. This misfire no-start in wet or damp weather is going to be caused by the ignition system of the engine. In order to isolate the cause you can remove the inside engine cover and then start the van....

Q: Soft brake pedal

Hi and thanks for your question. If you are having a soft brake pedal then there is air in your brake system. An abs module would not cause a soft brake pedal, but contaminated brake fluid or low fluid will...

Q: What causes brake to grab? It it a serious problem? Should I have the dealership to investigate the problem.

If the brakes on a car are not functioning properly, they absolutely should be inspected and repaired. Among the many causes of grabbing brakes are contaminated brake pads (dust, grease, fluid), misaligned calipers, loose brake mounting bolts, seized caliper pistons...

Related articles

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...
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...