Q: How Do I Know If My Brake Fluid Is Low?

asked by on

How do I know if my brake fluid is low?

The reservoir that holds brake fluid is under the hood and typically directly in front of the driver. The brake fluid reservoir is usually made out of semi-transparent plastic allowing the brake fluid level to be checked without opening the top.

The reservoir has markings showing the “Max” and “Min” levels allowable. The fluid level should always be between these levels.

Nearly all vehicles also use a sensor system that will warn the driver if the level gets low. Look for a red light on the instrument panel to illuminate. The Low Brake Fluid warning light on many vehicles is the same red warning light that comes on if you forget to release the parking brake. Other vehicles use a dedicated warning lamp for each condition.

It is unsafe to operate a vehicle with low brake fluid level. If it is found to be low, or the warning light is on, it is very important that the cause is determined before driving. It may be due to normal brake lining wear indicating that the brake pads need to be replaced. Low fluid level can also be due to a leak in the brake hydraulic system which can cause the brakes to fail.

Low brake fluid level indicates that a brake inspection is required. An inspection of your brake system is one of the many services that can be performed for you by a certified mechanic from YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. How Do I Know If My Brake Fluid Is Low?

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: My car is being serviced and the mechanic just advised me that my brake pedal goes all the way to the floor,

Hey there. You may have a brake leak or be low on brake fluid. However, if you are low on fluid, you may have a leak. Brake fluid does not go anywhere therefore is should never get low or become...

Q: How do I check the brake fluid?

Your brakes are hydraulic. They use a special type of fluid to actuate the calipers and squeeze the pads against the rotor. As your pads wear down, the amount of fluid in the lines increases and the amount of fluid...

Q: Brakes are making squeaking noise - 1980 Toyota Cressida

Brake noise or chatter occurs when the brake pad backings vibrate in the pad guides and caliper housing. Often the application of a brake grease or anti-seize lubricant can be applied to the contact point of the brake pad backings...

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...