Cadillac 2007 SRX - Manual (Page 121)

Engine Coolant Heater
Your vehicle may have an engine coolant heater.
In very cold weather, 0°F (
−
18°C) or colder,
the engine coolant heater can help. You will get
easier starting and better fuel economy during
engine warm-up.
Usually, the coolant heater should be plugged in a
minimum of four hours prior to starting your
vehicle. At temperatures above 32°F (0°C), use of
the coolant heater is not required. Your vehicle
may also have an internal thermostat in the
plug end of the cord. This will prevent operation of
the engine coolant heater when the temperature
is at or above 0°F (
−
18°C) as noted on the cord.
To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical
cord. For the 3.6L V6 engines, the cord is
located in the engine compartment on
the passenger’s side of the vehicle in front of
the fuse block.
For the 4.6L V8 engine, the cord is on the
front center of the vehicle above the radiator.
You must remove the plastic cap to access
the plug.
3. Plug it into a normal, grounded 110-volt AC
outlet.
{ CAUTION:
Plugging the cord into an ungrounded
outlet could cause an electrical shock.
Also, the wrong kind of extension cord
could overheat and cause a fire. You
could be seriously injured. Plug the cord
into a properly grounded three-prong
110-volt AC outlet. If the cord will not
reach, use a heavy-duty three-prong
extension cord rated for at least 15 amps.
4. Before starting the engine, be sure to unplug
and store the cord as it was before to keep it
away from moving engine parts. If you do
not, it could be damaged.
121