Q: Q: Brake pedal goes all the way to the floor

asked by on

Hi, on two separate occasions, the brake pedal on my Audi went all the way to the floor. In both cases, I had to turn off the car and pump the pedal until it was restored.

I have taken the car to a number of mechanics. Everyone tells me something different. The Audi dealership said that my front calipers were broken. I'm not sure I believe the dealer, as I've been driving the car "gently." Given that I have four calipers on the car, I don't understand why the brake pedal would go to the floor even if the front calipers are broken (because the rear calipers should work, right)?

The brake fluid is full, so there is no external leaking. I've read online that this could be a sign of a bad master cylinder.

I would appreciate any guidance on this. Thanks

My car has 80000 miles.
My car has an automatic transmission.

If you have not lost any fluid in the master cylinder and the pedal goes to the floor, then your master cylinder must be bypassing fluid and not creating pressure. In order to have a mechanic diagnose it properly, they would need to inspect the vehicle to verify the issue. A mechanic cannot diagnose a problem they cannot verify is happening. For your safety and those around you, I would highly recommend that you have a certified brakes mechanic inspect the vehicle and resolve the issue. YourMechanic offers a repair and diagnosis service preformed by a professional mechanic that will commute to your location for the brake inspection.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Brake pedal goes all the way to the floor

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: Q: Steering wheel locked while going around curve

Hello there, When a vehicle loses power assist in the steering it can definitely be a cause for concern. The 2015 Q5 is equipped with electro-mechanical power steering. This type of system uses electronics to provide the power assistance to...

Q: My 2002 Isuzu Rodeo storage cuts off starts cuts off starts cuts off

A sudden stalling issue can be caused by a few things: An ignition switch issue is possible if once the engine stalls, all power is lost as well as if you turned the key off. Depending on...

Q: If the air is too cold, motor knocks on startup

As strange as it may sound, the oil filter that was used during one of your oil changes may be the root cause. GMC Technical Service Bulletin (TSB) 10-06-01-003C has detailed technical information showing that some non ACDelco oil filters...

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.