What are the reasons why the Roewe RX3 car key cannot be sensed?

[DeBarrett]

Roewe RX3 car key cannot be sensed for the following reasons: 1. Car key malfunction: The malfunction of the car key may be caused by damage to the internal circuit due to mechanical impact or burning of the transmitter components after water ingress. 2. Dead battery: A dead battery causes the car's sensor to fail to work, unable to receive the signal emitted by the key, resulting in sensing failure. 3. Electromagnetic interference: If the environment where the car owner is located has electromagnetic interference, it can cause signal transmission disorder, making it impossible to accurately identify the car key signal. 4. Sensor module failure: A faulty sensor module is equivalent to directly losing the 'connection' object.

[ElisaLynn]

I recently encountered an issue with key fob detection failure on the Roewe RX3, which could stem from several common causes. The most frequent culprit is a depleted key battery—that small CR2032 coin cell typically lasts about two years and can be easily replaced yourself for just a few dollars. External interference is another common factor, such as placing the key near a mobile phone (electromagnetic signals may disrupt detection) or being near high-power electrical equipment that affects signal transmission. Vehicle-related factors shouldn't be overlooked either, like a dirty or faulty door handle sensor, or low car battery voltage impacting the system. A practical first step is testing the spare key—if it works normally, the issue likely lies with the original key. Otherwise, check for interference sources and battery condition, addressing them promptly to avoid being locked out at critical moments.

[Natalie]

I can totally relate to the issue of the key not being detected. Last time my car had the same problem, and the reason was simple: the battery was dead. Open your key fob and check the battery model inside; it's usually a CR2032. You can buy one online and replace it yourself. Environmental interference is also a key factor. I've noticed that in underground parking lots or near high-power electrical devices, the signal gets weak, and you have to hold the key close to the car door for it to work. Also, during the rainy season, high humidity or water getting into the key can cause temporary malfunction—try drying it with a hairdryer. The safest approach is to regularly check the battery life and not wait until it fails. If none of these solutions work, it's best to visit a 4S shop. They have professional equipment to diagnose the issue, so you don't end up wasting money.

[LaNolan]

If the Roewe RX3 key fob is not being detected, there are three most likely causes: dead battery, interference, or vehicle module issues. First, test the key: press the button to see if the indicator light comes on; if not, replace the battery. Reduce interference: move away mobile phones or metal objects. If that doesn't work, try the spare key; if it still fails, check the vehicle sensor or battery status. Simply put, you can handle most situations yourself—don't delay.