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Why is the Rena fan not working?

2 Answers

DawsonMarie

09/01/25 3:25am

The reasons and solutions for the Rena fan not working are as follows: 1. Aging of the fan itself. Currently, many engine fans are made of plastic, and the engine compartment is constantly exposed to high temperatures. Over time, this can cause the components of the engine fan to age, resulting in the fan not working. Solution: Replace the fan with a new one. 2. Sensor signal interference. The fan operates because it receives signals from the water temperature sensor and refrigerant pressure sensor, which control the fan's speed. If these two sensors are affected by external factors, causing signal distortion, it will ultimately affect the fan's operation. Solution: It is recommended to have it inspected and repaired at a 4S shop. 3. Relay issues. If the water temperature reaches the required level but the fan still does not work, it may indicate a problem with the fan's relay. Due to aging or other reasons, the fan's relay may remain in an open state, preventing it from closing and allowing the fan to function properly. Solution: It is recommended to have it repaired at a 4S shop based on the actual situation.

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VonGage

09/13/25 6:17am

I once encountered an issue with the Verna's cooling fan not working, where I noticed the dashboard temperature gauge rising while driving. There can be multiple causes, such as a blown fuse, faulty relay, malfunctioning fan motor, defective temperature sensor, or poor wiring connections. A non-functioning fan can easily lead to engine overheating, which becomes even more dangerous when using the air conditioning in summer—never take it lightly. It's advisable to first check the fuse box; consult the manual for its location, usually near the engine bay. If the fuse is intact, the problem might lie with the relay or control module. Avoid DIY fixes as improper handling could worsen the situation. Regular maintenance helps prevent such issues—for instance, inspecting relevant circuits and connectors every six months. If you notice anything unusual, pull over promptly and seek professional assistance to ensure driving safety.

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