What is the reason why the Haval smart key can unlock the door but cannot start the car?

1 Answers
LaVanessa
07/30/25 8:58am
Haval smart key can unlock the door but cannot start the car may be due to the key running out of battery or the key being interfered with. Introduction to Haval: Haval is a sub-brand of Great Wall Motors, established on March 29, 2013. The Haval brand, mainly focusing on SUV models, operates in parallel with the Great Wall brand, using an independent logo and an independent system for product development, production, and services, mainly engaged in SUV production and sales. The brand includes three series: H series, M series, and F series. Smart key functions: When approaching the car. When the driver brings the key in their pocket close to the car, the key and the car begin to exchange preset instructions via radio. The car's locking system, security system, and engine control system are all activated; When opening the door. As soon as the driver touches the door handle, the sensor detects this pressure, and the servo motor unlocks the door. Then the seat, steering wheel, and exterior rearview mirror automatically adjust to the position suitable for the owner; Before starting. When the driver steps on the brake pedal, the steering wheel lock is immediately released. At the same time, the start button is also released, and finally, the main brake is automatically released; When getting off the car. When getting off, the driver must press the lock button. If the flashing light turns on, it indicates that the door is securely locked. At the same time as the car is locked, the key and the car will agree on a new instruction information.
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