2007 Toyota Yaris Owners Manual - Page 448

06 12.21 Tachometer Your vehicle may overheat during severe operating conditions, such as: Odometer and two trip meters D Driving up a long hill on a hot day. D Reducing speed or stopping after high speed driving. D Idling for a long period with the air conditioning on in stop−and−go traffic. PS16507 D Towing a trailer. NOTICE z Do not remove the thermostat in the engine cooling system as this may cause the engine to overheat. The thermostat is designed to control the flow of coolant to keep the temperature of the engine within the specified operating range. z Do not continue driving with an overheated engine. See "If your vehicle overheats" on page 227 in Section 4. The tachometer indicates engine speed in thousands of rpm (revolutions per minute). Use it while driving to select correct shift points and to prevent engine lugging and over −revving. Driving with the engine running too fast causes excessive engine wear and poor fuel economy. Remember, in most cases the slower the engine speed, the greater the fuel economy. PS16513 NOTICE Do not let the indicator get segment into the red zone. This may cause severe engine damage. With tachometer 112 2007 YARIS HATCHBACK from Feb. '07Prod. (OM52754U)