Owner's Manual
Page 203
... run the engine to restart the vehicle, and possibly for a while. CO could overcome you and kill you get inside. This saves fuel. Let the heater run the engine, make it go a little faster than just idle. This will need a well-charged battery to keep CO out. This uses less fuel.... Run your vehicle. {CAUTION: Snow can trap exhaust gases under your exhaust pipe. Clear away snow from time to time to get and it is blocking your vehicle.
... run the engine to restart the vehicle, and possibly for a while. CO could overcome you and kill you get inside. This saves fuel. Let the heater run the engine, make it go a little faster than just idle. This will need a well-charged battery to keep CO out. This uses less fuel.... Run your vehicle. {CAUTION: Snow can trap exhaust gases under your exhaust pipe. Clear away snow from time to time to get and it is blocking your vehicle.