What to Do When a Volkswagen Remote Key Gets Wet?
2 Answers
Handling method for a wet Volkswagen remote key: Disassemble the key, remove the battery, use a tissue to clean off moisture from both the key and battery, let it air dry for about two hours. After drying, reassemble and test the key by attempting to unlock the car door. A remote key utilizes the wireless remote control function of the central locking system, enabling door locking/unlocking from a distance without inserting the key into the lock cylinder. During operation, the key emits a weak radio wave which is received by the car's antenna. The electronic control unit then deciphers the signal code, triggering the system's actuator (motor or electromagnetic coil) to execute the locking/unlocking action.
Last time my Volkswagen remote key accidentally fell into water, and I quickly retrieved it, fearing circuit damage. The first step is to immediately remove the battery (if any) to prevent short circuits and burning out electronic components. Then, disassemble the key casing, wipe off surface moisture with a clean towel, and place it in a bag of dry rice or a silica gel bag to absorb moisture. Avoid placing it near a heater or using hot air; cold air is sufficient. Wait patiently for two or three days and don’t rush to use it, or the buttons may malfunction. If it still doesn’t work after drying, internal corrosion might be the issue, and you’ll have to visit a Volkswagen 4S shop or a professional repair center for inspection—possibly needing a circuit board replacement or an entire new key. For prevention, I’ve gotten into the habit of using a waterproof case in my pocket. Remember, following these simple DIY steps can save you a lot of money.
