The warning light illuminates if the temperature of the engine coolant is above 248±5.4°F (120±3°C).
Do not continue driving with an overheated engine.
✽ NOTICE
If the engine coolant temperature warning light illuminates, it indicates overheating that may damage the engine.
Hyundai Tucson (LM) 2010-2015 Service Manual: Master Cylinder Components and Components Location
Components
1. Reservoir cap2. Reservoir3. Grommet4. Master cylinder
...
Hyundai Tucson (LM) 2010-2015 Owners Manual: Scheduled maintenance services
Follow Normal Maintenance Schedule if the vehicle is usually operated where none
of the following conditions apply. If any of the following conditions apply, you
must follow the Maintenance Under Severe Usage Conditions.
Repeated short distance driving.
Driving in dusty conditions or sandy ...