2011 Infiniti M Owner's Manual - Page 78

CAUTION If the gauge indicates the engine coolant temperature is near the hot (H) end of the normal range, reduce vehicle speed to decrease the temperature. If the gauge is over the normal range, stop the vehicle as soon as safely possible and let the engine idle. If the engine is overheated, continued operation of the vehicle may seriously damage the engine. See "IF YOUR VEHICLE OVERHEATS" in the "6. In case of emergency" section for immediate action required. SIC4320 SIC4321 TACHOMETER The tachometer indicates engine speed in revolutions per minute (RPM). Do not rev the engine into the red zone 1 . The scale length and the red zone vary with the engine model. ENGINE COOLANT TEMPERATURE GAUGE The gauge indicates the engine coolant temperature. The engine coolant temperature is within the normal range when the gauge needle points within the zone 1 shown in the illustration. The engine coolant temperature varies with the outside air temperature and driving conditions. CAUTION When engine speed approaches the red zone, shift to a higher gear or reduce engine speed. Operating the engine in the red zone may cause serious engine damage. Instruments and controls 2-7