Nissan Sentra Owners Manual: Engine block heater (if so equipped)
Engine block heaters are used to assist with cold
temperature starting.
The engine block heater should be used when
the outside temperature is 20°F (-7°C) or lower.
WARNING
- Do not use your engine block heater
with an ungrounded electrical system or
a 2-pronged adapter. You can be seriously
injured by an electrical shock if
you use an ungrounded connection.
- Disconnect and properly store the engine
block heater cord before starting
the engine. Damage to the cord could
result in an electrical shock and can
cause serious injury.
- Use a heavy-duty 3-wire, 3-pronged extension
cord rated for at least 10 A. Plug
the extension cord into a Ground Fault
Interrupt (GFI) protected, grounded
110-VAC outlet. Failure to use the
proper extension cord or a grounded
outlet can result in a fire or electrical
shock and cause serious personal
injury.
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To use the engine block heater:
- Turn the engine off.
- Open the hood and unwrap the engine block
heater cord.
- Plug the engine block heater cord into a
grounded 3 wire, 3 pronged extension cord.
- Plug the extension cord into a Ground Fault
Interrupt (GFI) protected, grounded 110-
volt AC (VAC) outlet.
- The engine block heater must be plugged in
for at least 2 - 4 hours, depending on outside
temperatures, to properly warm the engine
coolant. Use an appropriate timer to turn the
engine block heater on.
- Before starting the engine, unplug and properly
store the cord to keep it away from
moving parts.
WARNING
Wet ice (32°F, 0°C and freezing rain),
very cold snow or ice can be slick and
very hard to drive on. The vehicle will
have much less traction or “grip” under
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