When does the Roewe RX5 fan start?
3 Answers
The Roewe RX5 fan starts when the coolant reaches 95 degrees Celsius, and the thermal switch controls the activation of the radiator fan. When the coolant temperature rises to a higher level, the thermal switch increases the fan speed. Once the coolant temperature drops to a certain level, the radiator fan will automatically turn off. The Roewe RX5 has dimensions of 4556 mm in length, 1855 mm in width, and 1719 mm in height, with a wheelbase of 2700 mm. The Roewe RX5 is equipped with a 1.5T turbocharged engine, delivering a maximum power of 124 kW and a maximum torque of 250 Nm, paired with a 6-speed manual transmission. The front suspension is a MacPherson independent suspension, and the rear suspension is a multi-link independent suspension.
As an owner of the Roewe RX5, I've noticed that the fan usually activates when the engine temperature gets too high, such as during traffic jams or prolonged low-speed driving. The system detects that the engine is about to overheat and automatically starts the fan to cool it down. Another time, when I turned on the air conditioning for cooling, the fan immediately started whirring loudly, indicating that the AC compressor triggers the fan to work. Sometimes, after rapid acceleration and stopping, the fan also runs for a while to allow the cooling system to recover. I need to pay attention to whether the fan noise is normal—if it keeps running or doesn't run at all, there might be issues like a faulty thermostat or insufficient coolant. I think these automatic controls in the car are quite smart, protecting the engine from overheating, especially during hot summer days when they activate more frequently. Before every long-distance drive, I check the radiator and fan connections to ensure everything is in good condition, avoiding breakdowns midway. Regular maintenance at the repair shop is also essential, where the mechanics use diagnostic tools to check the fan control module, preventing minor issues from becoming major problems.
While tinkering with car knowledge, I discovered that fan activation is influenced by two key factors: first, engine temperature control—the Roewe RX5's fan automatically starts when the coolant temperature rises to around 95 degrees Celsius and stops once cooling is achieved; second, air conditioning operation—the fan kicks in immediately when the AC is turned on to assist the condenser with heat dissipation. Occasionally, if the fan is too quiet or too noisy, it's necessary to check whether the fuse or relay has aged. I also noticed that fan speed varies depending on conditions—it's quieter at low speeds but ramps up during high-speed driving or uphill climbs. Understanding these aspects helps with DIY checks, such as using a thermometer to measure the coolant reservoir or listening for delayed fan operation after turning off the engine. Keeping the fan clean is crucial, as dust buildup reduces efficiency and may lead to overheating risks. Routine maintenance, like cleaning the radiator and inspecting wire connections, can extend the fan's lifespan.
