What are the reasons for the limited automatic emergency braking function?

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The automatic emergency braking function of the car may be limited due to poor wiring connections or issues with the millimeter-wave radar sensor. Poor wiring connections: Use a digital multimeter to check whether the circuit voltage is normal, and look for any loose connections or wiring issues. The wiring may need to be repaired. Radar sensor malfunction: Dirt on the radar sensor may cause false alarms. Check if the radar sensor is dirty, such as being blocked by mud, fluff, or similar debris, which can prevent it from accurately detecting the distance to obstacles ahead. This can result in the automatic emergency braking function being limited. You can use a tissue or cloth to clean it thoroughly.