It’s a scenario many drivers dread but often face: you’ve accidentally dropped your car key fob into water. Whether it’s a puddle, a spilled drink, or even a spin in the washing machine, a wet key fob can be more than just an inconvenience. If you’re now finding yourself with a key fob that got wet and a car that won’t start, don’t panic. This guide is designed to walk you through the essential steps to try and revive your waterlogged key fob and get you back on the road. While accidents happen, understanding how to react quickly and effectively can be the difference between a minor setback and a costly replacement.
Immediate Actions When Your Key Fob Gets Wet
Time is of the essence when dealing with a wet electronic device. The quicker you act, the better your chances of minimizing damage. Here’s what you should do immediately:
- Retrieve it Quickly: The moment you realize your key fob has been submerged, get it out of the water as fast as possible. The longer it stays wet, the more damage can occur.
- Power Down (If Possible): If your key fob model allows for easy battery removal without further water exposure risk, attempt to remove the battery immediately. This can help prevent short circuits if water has penetrated the casing. However, if you’re not comfortable or it seems difficult without letting more water in, skip this step for now and focus on drying.
- Remove Excess Water: Before you even think about drying, try to get rid of as much loose water as possible. Hold the key fob with the buttons facing downwards and gently shake it. This can help dislodge water that may have seeped inside through button gaps or seams.
- Initial Drying: Use a highly absorbent material like a paper towel, tissue, or a clean, dry cloth to wipe down the exterior of the key fob. Pay close attention to drying around the buttons and any openings in the casing.
The Drying Process: Step-by-Step Guide
Once you’ve taken the immediate actions, the next crucial step is to thoroughly dry your key fob. Remember, patience is key here. Avoid the temptation to use heat, which can damage the delicate electronic components.
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Open the Casing (If Comfortable): If you feel confident and have the right tools (usually a small screwdriver or a thin pry tool), carefully open the key fob casing. This will allow for more effective drying of the internal components. If you’re unsure, it’s okay to skip this step, but drying may take longer.
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Battery Removal (If Not Already Done): If you didn’t remove the battery immediately, do so now if you have opened the casing. Car key fob batteries are typically small, disc-shaped silver batteries. Set the battery aside to dry separately. Do not replace it until you are certain the fob is completely dry.
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Gentle Drying Methods (Avoid Heat):
- Air Drying: The safest method is to simply let the key fob air dry. Place the opened key fob and the battery in a warm, dry room with good air circulation. A high shelf can be beneficial as warm air rises, promoting faster drying.
- Silica Gel: If you have silica gel packets (those small packets found in new shoes or electronics packaging), these are excellent for absorbing moisture. Place the key fob and battery in a sealed plastic bag with several silica gel packets.
- Dry Rice (Use with Caution): While often suggested, uncooked rice isn’t ideal due to potential starch contamination. If you use rice, ensure it’s dry, uncooked rice and be aware that it’s less effective than silica gel and can leave residue. Consider it a last resort.
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Drying Time: Allow ample time for drying – at least 48 hours. Even if it seems dry to the touch, internal components may still retain moisture. Resist the urge to speed up the process with a hairdryer or radiator, as heat can cause significant damage to the electronics.
Why Your Car Might Not Start After a Key Fob Gets Wet
Water can cause a range of problems that prevent your car from starting when your key fob gets wet:
- Short Circuit: Water is conductive and can create short circuits within the key fob’s electronic circuitry. This can disrupt the signals needed to communicate with your car’s immobilizer and starting system.
- Battery Drain: Water can cause the battery to drain rapidly, leaving insufficient power to send signals.
- Component Corrosion: Moisture leads to corrosion of the metal contacts and electronic components over time. Even if the key fob seems to work initially after drying, corrosion can cause failure later.
- Signal Interference: Water residue can interfere with the radio signals transmitted by the key fob, preventing your car from recognizing the key.
When to Seek Professional Help
After allowing sufficient drying time, reassemble your key fob, insert a fresh battery, and try to start your car. If your car still doesn’t start, or the key fob is exhibiting other issues (like not locking/unlocking doors), it’s time to consider professional help.
- Mobile Car Locksmith: A mobile car locksmith specializing in key fob programming and car key replacement is often a faster and more cost-effective solution than going to a dealership. They can diagnose the issue, reprogram your existing key fob if salvageable, or provide a replacement and program it to your vehicle on-site.
- Dealership: Dealerships can also replace and program key fobs, but it’s typically a more expensive option and may require you to tow your car to their location.
Getting a spare key is always a wise precaution. Consider getting a spare key made to avoid future hassles, especially if your current key fob is showing signs of age or damage.
While a wet key fob and a car that won’t start is frustrating, following these steps gives you the best chance of resolving the issue. Remember to act quickly, dry thoroughly, and know when to call in the experts at Keys 4 Cars for efficient and affordable key fob replacement services.
