2010 Toyota Camry Owners Manual - Page 459

5-2. Steps to take in an emergency If your vehicle overheats The following may indicate that your vehicle is overheating: ● "WATER TEMP" is shown on the multi-information display: The engine may be overheating. ● "HYBRID SYSTEM OVER HEAT" is shown on the multi-information display: The power control unit may be overheating. Follow the correction procedure as described below. Correction procedures