Why does the Chery Tiggo fan keep running?
3 Answers
There are three possible reasons why the Chery Tiggo fan keeps running: faulty temperature control switch, faulty air conditioning switch, and faulty fan relay and wiring. Faulty temperature control switch: When the vehicle's temperature control switch fails, the computer cannot recognize the temperature level and can only continuously run the fan to achieve cooling. Faulty air conditioning switch: When the air conditioning switch fails, it cannot properly turn off the air conditioning fan, causing the fan to keep running continuously. Faulty fan relay and wiring: If the fan relay is damaged or there is an issue with the wiring, the power-off command cannot be executed, resulting in the fan maintaining its running state.
Seeing this question reminds me of my past experience. The most common reason for a fan running continuously is either the temperature sensor in the cooling system misjudging the temperature as too high or the fan relay sticking, causing the circuit to remain on. It's not difficult to check: after parking and waiting for the car to cool down, first check if the coolant level is within the standard range—if it's low, you'll need to add specialized antifreeze. Then, try unplugging and replugging the fan relay to see if the fan resumes normal operation. If the problem persists, it might be a sensor malfunction or a short circuit in the electrical wiring. A fan that won't stop not only wastes battery power and increases fuel consumption but also risks overheating the engine and damaging other components. I remember one time I neglected it, and the fan kept running until the motor burned out, costing a lot to rebuild the entire cooling system. I recommend addressing the issue early—check basic things like fluid levels and relays yourself, but for a thorough fix, it's safer to have a professional auto shop inspect the electrical circuits and coolant temperature system. Regular maintenance, such as cleaning debris from the radiator, can prevent such problems.
The fan running continuously really worries me about safety, especially for novice drivers. Causes include coolant leaks or temperature sensor failures, which can make the fan mistakenly think the car is overheating and keep working. Over time, the engine may exceed safe temperature limits, posing greater risks when driving on highways in summer. When checking, pay attention to the coolant temperature gauge reading: under normal conditions, the fan should operate intermittently; continuous operation indicates a control issue. Novices shouldn't tamper with the electrical circuits—start with simple checks like inspecting the radiator for dust blockage after parking and ensuring the fan blades are clean and unobstructed. A continuously running fan can drain the battery life—I once experienced constant fan noise and had difficulty starting the car the next day. Avoid delaying repairs, as complete failure of sensors or relays could lead to higher replacement costs. Routine maintenance, such as changing coolant quarterly, can reduce risks. However, to address this common issue in the Chery Tiggo, prompt professional repair is the wisest choice—safety is far more important than saving money.
