Is a Car Key Still Usable After Falling into Water?

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07/29/25 9:34pm
Car keys can still be used after falling into water as they are waterproof. Precautions to take when using a car key after it has fallen into water include: 1. Buttons: Do not press any buttons on the remote immediately to prevent short-circuiting and damaging the key's chip. 2. Power off: Disassemble the key to cut off the power, dry it with a hair dryer, and then test it. A car key is a tool for locking/unlocking and starting a car, and its functions include: 1. Closing windows: After turning off the engine and exiting the car, long-press the lock button on the key to remotely close the windows. 2. Automatic opening: Long-pressing the trunk unlock button will automatically pop it open.
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