What is the reason why the GAC Trumpchi key cannot be detected?
3 Answers
GAC Trumpchi key cannot be detected because the order of parking and turning off the engine is incorrect. You should shift to P gear first, then turn off the engine. If the order is reversed, the key cannot be detected and the car cannot be locked. Solution: Without stepping on the brake, press the start button to power on, then press the start button again to power off. If the auto-unlock function upon shutdown is set, you will hear the unlocking sound, and the issue of the key not being detected will not occur. Key usage precautions: The key contains an electronic circuit that triggers the anti-theft engine immobilizer system. If the circuit is damaged, the key may fail to start the engine. Avoid exposing the key to direct sunlight, high temperatures, or humid environments. Avoid dropping the key from a height or placing heavy objects on it. Avoid contact with liquids; if the key gets wet, immediately dry it with a soft cloth.
I encountered this issue last time as well. After driving to the mall and coming back, I found the key wasn't responding. Later, I realized the key battery was dead. I spent a few bucks to buy a CR2032 button battery, opened the key casing, replaced it, and it worked fine again. Usually, keeping the key and phone in the same pocket can interfere with the signal, so it's better to keep them apart. If replacing the battery doesn't work, try placing the key against the push-start button for an emergency start—this trick works really well. If that still doesn't help, it might be that the key chip is damaged or there's an issue with the car's receiver module, and you'll need to visit the dealership for re-matching or repairs. Parking near high-voltage power lines can easily interfere with the signal—just moving the car to a different spot usually fixes it. Replacing the key battery every year and a half can help avoid this hassle.
If the key is not detected, start with the simplest check - the battery. The commonly used CR2032 battery in keys tends to lose charge easily. Open the key casing and test it with a multimeter; if the voltage is below 2.8V, it's time for a replacement. Additionally, moisture exposure or drops can cause poor contact in the key's internal circuits. Try using a hairdryer on low heat to dry it out gently. Also, be mindful of interference sources inside the car; placing a power bank near the center console often causes disruptions. If all else fails, disconnect the negative terminal of the car battery for ten minutes to reset the system - this often resolves the issue. Only consider visiting a shop to inspect the antenna receiver module or reprogram the key as a last resort, as labor costs can be quite high. Troubleshooting yourself first saves both money and hassle.
