WARNING
Failure to follow engine block heater instructions could result in property damage or serious personal injury.
Do not use your heater with ungrounded electrical systems or two-pronged adapters. There is a risk of electrical shock.
Do not fully close the hood, or allow it to drop under its own weight when using the engine block heater. This could damage the power cable and may cause an electrical short resulting in fire, injury and property damage.

Note:  The heater is most effective when outdoor temperatures are below °F (-18°C).
The heater acts as a starting aid by warming the engine coolant. This allows the climate control system to respond quickly. The equipment includes a heater element (installed in the engine block) and a wire harness. You can connect the system to a grounded 120-volt AC electrical source.
We recommend that you do the following for a safe and correct operation:
  • Use a 16-gauge outdoor extension cord that is product certified by Underwriter’s Laboratory (UL) or Canadian Standards Association (CSA). This extension cord must be suitable for use outdoors, in cold temperatures, and be clearly marked Suitable for Use with Outdoor Appliances. Do not use an indoor extension cord outdoors. This could result in an electric shock or become a fire hazard.
  • Use as short an extension cord as possible.
  • Do not use multiple extension cords.
  • Make sure that when in operation, the extension cord plug and heater cord plug connections are free and clear of water. This could cause an electric shock or fire.
  • Make sure your vehicle is parked in a clean area, clear of combustibles.
  • Make sure the heater, heater cord and extension cord are firmly connected.
  • Check for heat anywhere in the electrical hookup once the system has been operating for approximately 30 minutes.
  • Make sure the system is unplugged and properly stowed before starting and driving your vehicle. Make sure the protective cover seals the prongs of the block heater cord plug when not in use.
  • Make sure the heater system is checked for proper operation before winter.
Using the Engine Block Heater
Make sure the receptacle terminals are clean and dry prior to use. Clean them with a dry cloth if necessary.
The heater uses 0.4 to 1.0 kilowatt-hours of energy per hour of use. The system does not have a thermostat. It achieves maximum temperature after approximately three hours of operation. Using the heater longer than three hours does not improve system performance and unnecessarily uses electricity.