Can the car key still be used after being washed with clothes?

[BrielleFitz]

Car key can still be used after being washed with clothes. Working principle of remote key: When the owner enters the sensing area of the key system, as long as they touch the door handle, the identity recognition "key" they carry will receive the low-frequency signal sent by the car. If this signal matches the identity recognition information stored in the "key", the "key" will be awakened. After being awakened, the "key" will analyze the authentication command sent by the car and send corresponding signals, which are encrypted to enhance security. Basic components of remote key: Transmitter, consisting of a transmission switch, transmission antenna (keypad), integrated circuit, etc. It contains an identification code storage circuit and an amplitude modulation circuit, with a button-type lithium battery installed on the opposite side of the circuit. The transmission frequency is selected according to the radio standards of the country of use, and the transmission switch sends a signal each time it is pressed. Receiver, after the transmitter sends the identification code using shortwave modulation, it is received by the car's shortwave antenna and enters the shortwave high-frequency amplification processor of the receiver's electronic control unit through a distributor for demodulation, then compared with the demodulator's identification code; if it is the correct code, it is input into the control circuit to activate the actuator.

[MacAdalynn]

That day my key fell into the laundry basket and got washed, which really gave me a headache. It mainly depends on the type of key: if it's an old-fashioned mechanical key, washing it is generally no big deal—just dry it and it should work. But modern keys with remote controls or smart keys have electronic chips inside, and getting soaked in water can easily cause a short circuit and damage them. You should immediately open the casing, remove the battery, and wipe off the water droplets with a tissue. Avoid using a hairdryer with high heat, as it can damage the circuits. Then place it in a bag of rice or with desiccant to absorb moisture for at least 24 hours before reassembling and testing. If the buttons don’t respond, the chip might be damaged, and you’ll need to take it to a professional shop for repair or get a new key—otherwise, unlocking the car or starting it could become a problem. Washing keys often happens when you're in a rush, so it’s best to develop a habit of placing keys in a fixed spot to avoid this hassle. Electronic keys aren’t cheap to replace, you know!

[PiperFitz]

Washed the key with clothes? I've done it several times! Sometimes I got lucky and it still worked, sometimes it completely died. The key is to act fast: take it out without shaking off the water, disassemble the shell and gently wipe it dry, especially the contact points. Water in the remote key can corrode the battery contacts, so leave it in a ventilated place for a few days to dry naturally. Then test if it can unlock or start the car. If not, it's probably an electronic component failure, and you'll need to go to an auto repair shop to check it out—maybe it's just a blown fuse, and replacing it can save the hassle. Last time my key got wet, I temporarily used a spare key as a backup, reminding everyone to keep one at home. Don't underestimate car electronics—water is the most common killer. Be careful to avoid spending unnecessary money on a replacement.

[McRose]

Don't panic if your key gets washed. I've seen similar cases. Quickly disassemble it and let it dry, avoiding button presses to prevent short circuits. Water immersion can damage the circuit board; try its functions after drying for three to four days. Most times it can recover, otherwise, you'll need a technician. Always pay attention to key storage.