2006 Nissan Towing Guide 20 2. Turn off the air conditioning and, after opening all the windows, turn the heater on to
maximum hot and the fan to its highest speed. The heater core in your vehicle is just
like a miniature engine radiator and will provide an extra cooling surface to help reduce
engine temperature.
3. Run the engine at a fast idle (approximately 1,500 rpm) until the temperature gauge
returns to a normal reading. If the temperature does not drop or continues to increase,
stop this step immediately.
4. Being cautious of traffic, step out of the vehicle and, from a safe distance, look for
steam underneath the engine. If you see steam or leaking coolant, stand clear to avoid
being burned. Shut off your engine immediately and allow it to cool. If there is no steam,
open the hood. Never remove the radiator cap when the radiator is hot. If the cap is
removed under these conditions, hot water under high pressure may spurt out, possibly
causing serious injury.
5. As soon as the engine has cooled to its normal operating temperature, visually inspect
the drive belts for damage or looseness. A loose belt reduces water pump efficiency.
Be careful to keep your hands, hair, jewelry, and clothing clear of the running drive belt
and other moving parts when inspecting the engine and radiator. Also check to see if
the cooling fan is running, and inspect the water pump, radiator, and radiator hoses for
leaks. Keep in mind, too, that if your vehicle is equipped with an electric fan motor, it
may start without warning any time the coolant temperature is high. If you find leaking
coolant, a loose or missing drive belt, or an inoperable fan, turn the engine off
immediately.
6. If no leaks are apparent and all other components appear to be operating properly with
the engine cooled to its normal operating temperature, check the coolant level in the
reservoir tank with the engine running. Add coolant to the reservoir tank if needed. At
this point, if repairs are required, go to the nearest Nissan dealer. See the IN CASE OF
EMERGENCY section of your owner’s manual for additional information on overheating.
NOTE – Armada, Frontier, Pathfinder, Titan, and Xterra vehicles have an engine protection
mode which helps reduce the chance of engine damage if the engine coolant reaches a
specified temperature. The Murano has a high fluid temperature protection mode which
helps to reduce the chance of transmission damage. See your owner’s manual for details.
