The fan of an electric vehicle (EV) or plug-in hybrid (PHEV) in the UAE will often operate during charging, and this is a normal function of the battery thermal management system. In our high ambient temperatures, which can exceed 40°C for months, the cooling system works harder to prevent the battery pack from overheating during the high-power charging process. According to technical guidelines from RTA Dubai and advisories from the UAE Ministry of Energy and Infrastructure, maintaining optimal battery temperature (typically between 20-40°C) is critical for safety, longevity, and charging efficiency. A study on GCC-spec EVs noted that during a DC fast charge at a temperature of 45°C, the cooling fan can operate at high speed to manage heat, which is audible. From a total cost of ownership (TCO) perspective, ensuring this system functions properly prevents accelerated battery degradation—a key factor in an EV's resale value in the UAE, where a 2023 model can depreciate by up to 25-30% in the first year. Some owners report a cost-per-km saving of up to 60% compared to a petrol SUV like a Patrol using Super 98, but this relies on the health of systems like the cooling fan. If the noise is a constant loud whine or grinding, it may indicate dust accumulation from our sandy roads or a bearing issue needing service.
