Skip the auto shop - Our mechanics make house calls

Q: What do I do if the coolant reservoir is completely empty?

asked by on

What do I do if the coolant reservoir is completely empty?

A: The coolant reservoir on your Accord is con...

The coolant reservoir on your Accord is connected to the radiator, and allows coolant to flow back and forth between the two as it heats and cools. If the coolant reservoir is completely empty, you can’t just refill it. You need to check the level of coolant in the radiator as well. Here’s how to do that:

  1. Wait until the radiator has cooled. Opening it hot can cause serious burns (very hot coolant can spray out).

  2. Turn the radiator cap counterclockwise, but don’t press down on it. This will release any built up pressure.

  3. Push down and turn counterclockwise on the cap.

  4. Remove the cap and check the level of coolant in the radiator. It should be no lower than the bottom of the radiator neck.

  5. If the coolant is low, top it off. Add fresh coolant slowly and clean up spills immediately.

  6. Replace the radiator cap.

  7. Top off the coolant reservoir.


If both the radiator and reservoir are low on coolant, it could signal a leak somewhere in the system.

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・Save up to 30%

Get a quote

What others are asking

Q: Heater not working

If steam is coming out of your vents, the heater core is leaking. Replacement of the heater core on your particular vehicle requires dashboard removal and should only be attempted by qualified technicians like ones from YourMechanic. They will be...

Q: What is shift lock release?

Most automatic transmissions come equipped with a solenoid designed to prevent the transmission from being moved out of park of the brake isn’t pressed. However, if the brake light switch malfunctions, the battery fails or the solenoid fails, you may...

Q: How do I set drive lock mode?

When your vehicle is in drive lock mode, all of the doors and the trunk will automatically lock when your vehicle reaches a speed of roughly 10mph. You can manually set drive lock mode with a few easy steps: 1....

Related articles

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...
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...