2009 Lexus GX 470 Owners Manual - Page 415

5-2. Steps to take in an emergency STEP 5 Add coolant if required. Water can be used as an emergency measure if coolant is unavailable. (→P. 428) Have the vehicle checked at your nearest Lexus dealer as soon as possible. n Overheating In the following situations, your vehicle may be overheating. l The engine coolant temperature gauge enters the red zone or a loss of power is experienced. l Steam is coming from under the hood. CAUTION n To prevent an accident or injury when inspecting under the hood of your vehicle l If steam is seen coming from under the hood, do not open the hood until the steam has subsided. The engine compartment may be very hot, causing serious injury such as burns. l Keep hands and clothing away from the fan and engine drive belt while the engine is running. l Do not loosen the radiator cap while the engine and radiator are hot. Serious injury, such as burns, may result from hot coolant and steam released under pressure. 420