Honda Civic manuals

Honda Civic Owners Manual: Overheating

How to Handle Overheating

Overheating symptoms are as follows:

 First thing to do

  1.  Immediately park the vehicle in a safe place.
  2.  Turn off all accessories and turn on the hazard warning lights.

    No steam or spray present: Keep the engine running and open the hood.

    Steam or spray is present: Turn off the engine and wait until it subsides.

    Then open the hood.

How to Handle Overheating

WARNING Steam and spray from an overheated engine can seriously scald you.

Do not open the hood if steam is coming out.

NOTICE Continuing to drive with the temperature gauge pointer at the H mark may damage the engine.

Next thing to do

Next thing to do

  1. Check that the cooling fan is operating and stop the engine once the temperature gauge pointer comes down.

    If the cooling fan is not operating, immediately stop the engine.

  2.  Once the engine has cooled down, inspect the coolant level and check the cooling system components for leaks.

    If the coolant level in the reserve tank is low, or no coolant in the tank, check that the radiator is cool. Cover the reserve tank cap with a heavy cloth and open the cap. Add coolant until it reaches the MAX mark, and put the cap back on.

Last thing to do

Once the engine has cooled sufficiently, restart it and check the temperature gauge.

If the temperature gauge pointer has gone down, resume driving. If it has not gone down, contact a dealer for repairs.

How to Handle Overheating

WARNING Removing the reserve tank cap while the engine is hot can cause the coolant to spray out, seriously scalding you.

Always let the engine and radiator cool down before removing the reserve tank cap.

If the coolant is leaking, contact a dealer for repairs.

Use water as an emergency/temporary measure only.

Have a dealer flush the system with proper antifreeze as soon as possible.

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See also:

Honda Civic Owners Manual. Maintaining Genuine Leather
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