Honda Odyssey 2009 Owner's Manual page 484

If the Engine Overheats
6. If you do not find an obvious leak,
check the coolant level in the
radiator reserve tank. Add coolant
if the level is below the MIN mark.
If there was no coolant in the
7.
reserve tank, you may need to add
coolant to the radiator. Let the
engine cool down until the pointer
reaches the middle of the tempera-
ture gauge, or lower, before check-
ing the radiator.
Removing the radiator 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 radiator cap.
478
8. Using gloves or a large heavy
cloth, turn the radiator cap
counterclockwise, without pushing
down, to the first stop. After the
pressure releases, push down on
the cap, and turn it until it comes
off.
9. Start the engine, and set the
temperature control dial to
maximum heat (climate control to
AUTO at '' ''). Add coolant
to the radiator up to the base of
the filler neck. If you do not have
the proper coolant mixture
available, you can add plain water.
Remember to have the cooling
system drained and refilled with
the proper mixture as soon as you
can.
10. Put the radiator cap back on
tightly. Run the engine, and check
the temperature gauge. If it goes
back to the red mark, the engine
needs repair (see
Emergency
Towing on page 488 ).
11. If the temperature stays normal,
check the coolant level in the
radiator reserve tank. If it has
gone down, add coolant to the
MAX mark. Put the cap back on
tightly.