Skip the auto shop - Our mechanics make house calls

Q: My brother put half a glass of water in the brake fluid container. What should I do?

asked by on

My brother put half a glass of water in his cars brake fluid container . What should we do?

My car has 25000 miles.
My car has an automatic transmission.

You will need to have the brake system pressure bled until there is not evidence of any water left in the system. The first thing to do is to suck out all the fluid out of the brake reservoir first then fill it with fresh fluid and pressure bleed out the fluid until the fluid is completely flushed clean. You may have to put one to two quarts of fluid to make sure most of the water is out of the system. Even after flushing the fluid through the system you may have leftover residue water that would need to be bled out after a few weeks use.

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!
  • Home
  • Questions
  • My brother put half a glass of water in the brake fluid container. What should I do?

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: Car Periodically Won't Start, Battery is perfectly fine.

Hello, thank you for writing in. If the engine is not turning over when you try to start the car then the starter is not receiving power, or is not using the power. Several components must pass the electricity through...

Q: Rear brakes locking up.

If the ABS light is on, there will be diagnostic codes to access. Those codes will provide enough clues to dig into this. I would first obtain those codes simply because they will give a direct indication of what components...

Q: The coolant is leaking from the thermostat

You need to use silicone on each side of gasket and make sure thermostat is in the slot that holds it and it did not come out of position.

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...