How Many Keys Does a Keyless Start Car Have?
3 Answers
A keyless start car comes with two keys. The functions of keyless start include: 1. No need for the original car key or remote to unlock the doors; 2. Automatic window closing when leaving the car; 3. Enhanced convenience for nighttime driving; 4. Easy starting with self-diagnosis and protection for the original starting system; 5. Built-in anti-theft functionality. The roles of car keys are: 1. Closing windows automatically after turning off the engine; 2. Locating the car easily in parking lots; 3. Automatically opening the trunk; 4. Remote-controlled window opening. Types of car keys include: mechanical keys, remote keys, touchscreen LCD keys, and smart wristband keys. Precautions for using car keys are: 1. Avoid placing them near electronic devices; 2. Do not expose the keys to direct high temperatures; 3. Do not use batteries with different power levels.
I bought a car with a one-button start feature, and the salesperson gave me two smart keys when I picked up the car—one for daily use and the other as a spare in case of loss or dead battery. Once, I forgot to bring the main key when going out, but luckily the spare key was in my bag, saving me from trouble. These car keys are compact and portable, supporting remote unlocking and starting, which is quite convenient. It's advisable to keep the spare key in a safe place at home rather than carrying it around. If lost, replacing one can be expensive, requiring programming and matching at a 4S dealership, costing several hundred yuan and taking a few days. The car key battery usually needs replacement after a few years to avoid malfunctions affecting usage.
I'm very interested in automotive technology and have studied the one-button start system. These smart cars usually come standard with two keys: one active key for keyless entry and ignition, and another as a backup design to prevent issues or theft risks with the primary key. The keys have built-in encrypted chips that communicate with the vehicle to ensure secure starting. Getting an additional key is troublesome, requiring manufacturer-authorized decoders to program new keys, which is costly and time-consuming. The vehicle's key system also affects insurance costs, and proper management of spare keys can reduce risks. When using the keys daily, be careful not to expose them to water or drop them, and regularly check the battery life to extend usage time.
