coolant temperature NISSAN SENTRA 2015 B17 / 7.G Towing Guide

2015 NISSAN Towing Guide 20
economy and transmission/engine driving characteristics. See your vehicle owner’s manual for
additional information about Tow Mode.

HILLS – UPGRADES
As the incline increases, if your vehicle is equipped with an automatic transmission — it is
designed to select automatically the correct gear for the best towing comfort and
performance. To maintain speed or avoid up and down shifts, manually shift to a lower gear as
needed.

The added weight of a trailer places an increased load on the engine and cooling system, so
monitor your coolant temperature gauge and automatic transmission fluid temperature gauge
(if equipped) carefully. At the first sign of overheating, pull to the side of the road. See IF
YOUR ENGINE OVERHEATS later in this section for more information.

HILLS – DOWNGRADES
WARNING - While going downhill, the weight of the trailer pushing on the tow vehicle
may decrease overall stability, and may deteriorate overall handling characteristics, which
could result in an accident, property damage, or serious injury. Therefore, to maintain
adequate control, reduce your speed and shift to a lower gear. If your vehicle is equipped with
Tow Mode, see your vehicle owner’s manual for information about the use of this function.
Avoid long or repeated use of the brakes when descending a hill, as this reduces their
effectiveness, and could cause overheating. Shifting to a lower gear instead provides “engine
braking” and reduces the need to brake as frequently.

AUTOMATIC CRUISE CONTROL
WARNING – In order to maintain a safe distance to the vehicle ahead to avoid the
possibility of accidents, property damage or serious injury, never use the Intelligent Cruise
control (ICC) system while towing a trailer or other vehicle. If the ICC sensor cannot detect
the reflector on the vehicle ahead, the system may not function properly.

IF YOUR ENGINE OVERHEATS
“A moderate increase in engine operating temperature is normal when towing a trailer.” If,
however, the coolant temperature gauge reading is abnormally high, if you are experiencing a
significant loss of power, or if you hear unusual engine noises,* the engine may be overheating
and you should immediately take the following steps:

1. Pull your vehicle safely over to the side of the road, out of traffic. Apply the parking brake
and move the gearshift lever to NEUTRAL (manual) or PARK (automatic). DO NOT STOP
THE ENGINE.

2015 NISSAN Towing Guide 21
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, and exit the vehicle. 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. If the temperature does not drop or continues to increase, stop the engine 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 and shut off your engine immediately and allow it to cool. If there is no steam, open
the hood.

WARNING - To avoid the danger of being scalded, do not open the hood if steam is
coming out. Never remove the radiator cap when the radiator is hot. If the cap is removed
under these conditions, pressurized hot water/coolant 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.

WARNING - 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 to avoid
being burned and to avoid personal injury. 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. Also, check to see if the cooling fan is running, and inspect the water
pump, radiator, and radiator hoses for leaks.

If you find leaking coolant, a loose or missing drive belt, or an inoperable fan, turn off the
engine immediately.

6. If no leaks are apparent and all other components appear to be operating properly, when
the engine has 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 vehicle owner’s manual for additional information on
overheating.

NOTES – All NISSAN vehicles have an engine protection mode, which helps reduce the
chance of engine damage if the engine coolant reaches a specified temperature. See your
vehicle owner’s manual for details.