Can the car key still be used if it is immediately retrieved after falling into water?

[IvanFitz]

It cannot be used directly. Here are the detailed steps: First, the car key needs to be completely disassembled, the battery on the circuit board should be removed, and the moisture on the disassembled remote key should be wiped dry. Finally, replace the battery before it can be used. Testing is required when using it. If any functions are not working, they need to be replaced promptly. How long can the car key battery last: The battery of the motor vehicle remote key can last for 2 to 4 years, mainly depending on the frequency of use of the remote key. The higher the frequency of use, the shorter the lifespan; the lower the frequency of use, the longer the lifespan. The more functions the remote has, the shorter the usage time.

[DelZachary]

I remember last summer when I was washing my car, I accidentally dropped the car key into a bucket of water. I quickly fished it out, but found the buttons weren't working. There's an electronic chip inside the key, and water can cause short circuits or corrode components. Even if you retrieve it immediately, water might have already seeped in. First, I removed the battery, dried the surface with a towel, and then placed it in a rice container overnight to absorb moisture. If this happens to you, don't rush to use it to unlock the car door. Be patient and let it dry for at least 24 hours before testing with a new battery, otherwise you might cause more damage. Usually, you can put the key in a waterproof key cover or keep a spare mechanical key just in case. These are little tricks I've learned that can save a lot of trouble.

[EmilyLynn]

Once I dropped my car key in a puddle and retrieved it. It looked fine, but the remote didn't respond, making me realize water had damaged the internal components. Most modern keys contain electronic chips. Once water gets in, it can cause short circuits that burn out the circuitry or drain the battery quickly, posing significant risks if used directly. I recommend avoiding pressing any buttons and quickly drying the key with a dry cloth. If you have the tools, open it up, remove the battery, and place it in a well-ventilated area to dry. After it's completely dry, reinsert the battery and test it. If it still doesn't work, visit a 4S store to get a new key. Develop a habit of keeping your keys in high places or deep pockets to avoid such accidents—this protects your keys and enhances safety.

[AdelineAnn]

If the key falls into water and is retrieved, don't rush to use it—my friend did this and found the remote control malfunctioned. Water penetrates quickly, and even if retrieved early, the chip may be affected. Simple solution: remove the battery, dry it, and place it in a dry place for a few days, such as in rice to absorb moisture. After completion, test the unlocking function; if it doesn't work, repair or replacement is needed.