In a vehicle, the two cooling fans form the "radiator fan assembly," with each fan serving a distinct purpose: one cools the engine radiator, and the other cools the air conditioning condenser. This dual-fan system is critical for GCC-spec vehicles in the UAE, where summer temperatures consistently exceed 45°C and prolonged air conditioning use is non-negotiable. For instance, a 2023 Toyota Land Cruiser's cooling system is designed to manage extreme heat loads from both the engine and the AC compressor. The radiator fan activates based on coolant temperature, typically starting at a medium speed around 95°C and switching to high speed near 105°C to prevent overheating. Simultaneously, the AC condenser fan kicks in almost immediately when the AC is turned on, regardless of engine temperature, to ensure efficient refrigerant cooling and maintain cabin comfort. The RTA Dubai's vehicle inspection guidelines and MOI UAE's summer driving advisories consistently emphasize the importance of a fully functional cooling system, which includes both fans, for safe operation in local conditions. A failure in either fan can lead to rapid overheating, especially during Dubai-Sharjah rush-hour traffic or desert driving, resulting in potential engine damage and costly repairs. Regular maintenance, such as cleaning radiator fins clogged with desert dust, is essential to keep both fans operating efficiently.
