Skip the auto shop - Our mechanics make house calls

Q: Brake pedal low

asked by on

My car has been sitting for long periods and now my brake pedal is low. I have not lost any fluid and had no problems before when I was driving it.

My car has 208000 miles.
My car has an automatic transmission.

Hi, thanks for writing in. If you have not lost any brake fluid, but your brake pedal is going low to the floor, the master cylinder is likely the issue. When the internal seals of the master cylinder fail, they allow internal leakage which prevents any pressure from building up in the system. Therefore, the brake pads will not be applied with as much if any force. I would recommend having the master cylinder inspected by a qualified professional to determine if the master cylinder is faulty. If the master cylinder is leaking internally, I would recommend having it replaced as soon as possible as this can cause a potential safety issue while driving the vehicle with a bad master cylinder. Here at YourMechanic, we can have a technician come to your home or office to inspect your brakes and master cylinder for you, and make or suggest the necessary repairs.

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

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: Transmission slipping when I drive

Hi there. When your model Civic begins to experience this it it is the first sign of transmission failure. The transmission fluid needs to be checked to see if it is at the right level. If it is check the...

Q: Noise coming from area of belts. I think it may be the ac compressor or compressor clutch

The car is safe to drive, but you probably won't have air conditioning. The main thing you want to consider is the A/C belt also driving the alternator. If the compressor clutch bearing locks up, it will break the belt...

Q: Car giving warning messages.

The "Check Coolant Level" set when the engine coolant falls below the minimum level. This generally occurs with normal vehicle use if the coolant has not been checked in a long time. If this is a recurring message then a...

Related articles

P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.