2009 Jeep Grand Cherokee Owner's Manual - Page 392

390 WHAT TO DO IN EMERGENCIES HAZARD WARNING FLASHERS The Hazard Warning flasher switch is located on the switch bank just above the climate controls. Press the switch to turn on the Hazard Warning flashers. When the Hazard Warning flasher switch is activated, all directional turn signals will flash on and off to warn oncoming traffic of an emergency. Press the switch a second time to turn off flashers. This is an emergency warning system and should not be used when the vehicle is in motion. Use it when your vehicle is disabled and is creating a safety hazard for other motorists. If it is necessary to leave the vehicle to go for service, the Hazard Warning flasher will continue to operate with the ignition key removed and the vehicle locked. NOTE: With extended use, the Hazard Warning flasher may run down your battery. IF YOUR ENGINE OVERHEATS In any of the following situations, you can reduce the potential for overheating by taking the appropriate action. • On the highways - Slow down. • In city traffic - While stopped, put the transmission in NEUTRAL, but do not increase the engine idle speed. NOTE: There are steps that you can take to slow down an impending overheat condition. If your air conditioner is on, turn it off. The air conditioning system adds heat to the engine cooling system and turning off the A/C removes this heat. You can also turn the temperature control to maximum heat, the mode control to floor, and the fan control to high. This allows the heater core to act as a supplement to the radiator and aids in removing heat from the engine cooling system.