What to Do When the Odyssey Dashboard Shows a Green Key and Won't Start?
3 Answers
The anti-theft function has been activated, preventing the vehicle from starting. You can tow the vehicle to a 4S shop to deactivate the anti-theft system and reset the password. Open the main key and check if the glass tube-shaped engine chip is abnormal. Changing the chip's direction or replacing the engine chip should resolve the issue.
Last time my Odyssey also had the dashboard showing a green key icon and wouldn't start, which made me scratch my head in frustration. This situation is mostly caused by the smart key system acting up - don't panic yet, try placing the key against the start button for emergency starting. My first instinct was to check the key battery, as the original battery after three years of use is most likely to run out of power. Replacing it with a CR2035 button battery should solve the problem. If that doesn't work, check for strong interference sources inside the car, such as phone chargers or metal objects blocking the signal. Also, insufficient battery voltage can cause trouble - a jump start might restore it. Remember not to continuously mash the start button, as it harms the car and wastes power. If you really can't figure it out, just call the 4S store for rescue - their computer diagnostics can identify the cause in just two minutes.
I've been driving for twenty years and encountered the flashing green key issue preventing engine start several times. This usually indicates the key signal isn't being recognized, most commonly due to depleted key battery. Extract the mechanical key to open the door, then press the electronic key against the start button for ten seconds - most models can force-start this way. Also check for electromagnetic interference inside the vehicle, like substandard chargers or high-power devices. Don't forget to test battery voltage - below 12 volts may cause system misjudgment. Once my car had interference from an aftermarket dashcam, which worked normally immediately after unplugging. For safety, never tamper with steering wheel wiring yourself - have a professional technician read fault codes with a diagnostic tool for reliable solutions.
