Why is the Great Wall Haval H6 not detecting the key?

[McAmy]

The Great Wall Haval H6 not detecting the key can be attributed to the following 4 reasons: 1. Remote key battery is dead: When pressing any button on the key, check if the indicator light turns on. If not, the key battery is dead. Solution: Every remote key contains an electromagnetic coil that emits microwaves. The one-touch start button also has an electromagnetic coil to receive these microwaves, which are then transmitted to the vehicle's computer. The computer analyzes whether the key matches. If the match is successful, the vehicle will start. 2. Poor key sensor inside the car: The key battery may have poor contact. You can remove the key cover, rotate the button battery, or remove it and reinstall it after a while. 3. Signal interference: If the dashcam is not properly shielded electromagnetically, it can cause interference, preventing the key from being detected. 4. Internal system failure of the one-touch start: In this case, you can only go to a professional auto repair center for inspection.

[JessicaRose]

Last time I drove the Haval H6, I also encountered the issue of the key not being detected, which was quite annoying. I reckon it's either because the key battery is nearly depleted—pressing the remote button with no response basically confirms this—or there's a strong electromagnetic interference source nearby, like near bank entrances or high-voltage electrical boxes where this happens easily. Actually, the key itself might also be damaged from moisture or drops, especially if the remote chip gets wet, which is the most likely cause of trouble. Another often-overlooked possibility is a malfunction in the smart key system, where the induction module needs to be re-matched. I usually leave this job to the 4S shop. The most extreme case would be a faulty anti-theft controller, which is hidden in the fuse box on the left side of the trunk. By the way, don’t panic if this happens—try pressing the key against the start button for forced induction first, and simultaneously check if the brake light switch triggers normally. These two makeshift methods can handle about 70% of unexpected situations.

[JulietteFitz]

With over a decade of experience repairing cars, I've handled numerous key detection issues with the Haval H6. In 80% of cases, it's due to the key battery voltage dropping below 2.5V - simply buy a CR2035 battery from the supermarket and replace it yourself. If your parking spot is near surveillance cameras or LED billboards, electromagnetic interference can weaken the key signal - just move to a different parking space. Keeping your car key in the same pocket as your phone often causes signal blockage. Also, check the wiring port of the door antenna module - oxidized metal contacts can cause signal reception failure, which can be fixed by spraying and wiping with WD40. If the spare key works but the main one doesn't, you can basically rule out vehicle system malfunction. Finally, avoid hanging metal accessories on your keychain as they can create an induction shield loop that interferes with signal reception.

[SanJanelle]

Veteran driver shares a few emergency tips: When the dashboard displays 'Key Not Detected', first try placing the key directly against the induction area under the steering wheel—this is a designated forced-start position. Also, remember to turn off electronic devices like dash cams. If the battery is low, warming the key with your hands can temporarily boost battery performance. Last time my key got waterlogged during a heavy rain and malfunctioned, I opened the back cover and used a hairdryer on low heat for ten minutes to fix it. If all else fails, head to an auto parts market to get a replacement key—nowadays, standard keys with matching services cost just 200 yuan, half the price of dealerships. By the way, stuck remote buttons can also cause system misjudgment, so checking if the buttons rebound smoothly is crucial.