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What to Do If You Lose One of Two Car Keys?

4 Answers
OJordan
07/23/25 8:40pm
It is recommended to replace all the car locks to prevent vehicle theft. After setting the lost key as an invalid key at the repair station, this key will no longer be able to start the vehicle but can still open the doors, posing a risk of valuable items being stolen. Below are some precautions for storing car keys: 1. Always remove the key: If you need to leave the car, even for just a few minutes, never leave the key in the ignition. Always turn off the engine, lock the car, take the key with you, and close all windows and sunroofs tightly to prevent thieves from taking advantage. 2. Do not keep the spare key in the car: Avoid storing the spare key inside the car. Most modern car anti-theft systems are designed to protect the engine. Even if a thief manages to duplicate a key to open the doors, they won’t be able to start the engine and drive away. However, the spare key can start the engine, so it must never be left inside the car or used as a regular key for long-term use. 3. Understand your insurance coverage: When purchasing car insurance, make sure to understand the details related to vehicle theft compensation to ensure you have the necessary evidence for a claim in case the car is stolen after losing the key.
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JustinRose
08/10/25 4:18pm
I just lost a car key and only have one left, so don’t take this lightly. First, check if the remaining key can start the car normally and test all functions like locking and unlocking to ensure they work. If it doesn’t function immediately, go to a professional repair shop or dealership as soon as possible. Next, the safest way to get a replacement key is through a 4S dealership or a certified locksmith—they can make a new matching key for you. If it’s a smart key with buttons, it may also require programming, otherwise it won’t work. This step usually isn’t cheap and could cost you hundreds to over a thousand yuan. For security, don’t delay—ask the dealership to disable the lost key’s code to prevent someone from driving off with your car if they find it. Finally, consider making a spare key to keep at home or with someone you trust, and develop good habits by not leaving it in easily lost places.
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StLaura
09/23/25 3:53am
Hey, don't panic if you've lost a car key. I've been in a similar situation before. First, try the remaining key to make sure it can unlock the door and start the car. If it works normally, there's no urgent issue. Then, you should get a new key made. Both the dealership and auto repair shops can handle this, but remember - if the key has a chip or remote functions, a professional will need to reprogram it using special equipment. Otherwise, the new key won't work, and this process usually isn't cheap, so be prepared to spend some money. Security is crucial - have them deauthorize the lost key immediately so no one can steal your car. In the future, consider getting a spare key made or adding a small GPS keychain tracker for easier location.
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VonDaisy
11/06/25 6:08am
If you've lost one car key and only have one left, timely action is crucial. First, use the remaining key to test all functions to ensure it works properly. Then, visit a 4S dealership or professional key and lock shop to get a new key made. Some keys require reprogramming to match the vehicle, so don't opt for cheap imitation replacements. Remember to deactivate the coding of the lost key to prevent theft risks. The process of getting a new key may cost several hundred yuan. It's advisable to always have a spare key on hand to avoid similar incidents in the future.
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