If you are in the UAE and your car's radiator fan (cooling fan) continues to run after the engine is switched off, the most common reason is high heat saturation in the engine bay. This is a frequent occurrence during the summer months when temperatures exceed 45°C, especially after driving in dense traffic like the Dubai-Sharjah road or after long trips on the Dubai-Abu Dhabi highway. The Engine Control Unit (ECU) keeps the fan running to cool the coolant and protect vital components like the turbocharger. Another common cause is a faulty coolant temperature sensor, which sends incorrect data to the ECU, forcing the fan to run constantly. A study by the UAE Ministry of Energy and Infrastructure on vehicle thermal management in Gulf climates notes that sustained high temperatures accelerate the wear of electrical sensors. Furthermore, standard maintenance checks recommended by the RTA Dubai for vehicles over 5 years old include inspecting the cooling system's electrical circuits and fan relays, as corroded connectors—common due to dusty conditions—can also cause irregular operation. If the fan runs for more than 5-7 minutes after turning off a normal sedan like a Toyota Camry or Nissan Sunny, or if it operates continuously while driving in normal conditions, it's advisable to visit a specialized garage to check the sensor, coolant level (using a mix suitable for GCC heat), and the fan relay. Ignoring this issue in the UAE's climate can lead to a drained battery overnight.
