What to do If Car Key Fob Got wet? Enter UK Auto Locksmith

by Uk Car Locksmith
3 weeks ago
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It’s a scenario no car owner wants to face—your car key fob has been exposed to water. Whether it’s because you accidentally dropped it in a puddle, got caught in a sudden rainstorm, or even washed it along with your clothes, the frustration and worry can quickly set in. Car key fobs are essential in today’s vehicles, containing crucial electronic components that allow us to lock, unlock, and start our cars. Unfortunately, water damage can render them useless, leaving you stranded and uncertain about what to do next.

However, don’t panic just yet. There are several steps you can take to rescue your key fob and potentially restore it to working condition. The quicker you act, the higher the chance you’ll avoid having to replace the fob entirely. In this article, we’ll walk you through the essential steps to take if your car key fob gets wet, what to avoid during the drying process, and how to test whether your key fob is still functional. By following these steps, you’ll have a better chance of saving your fob and getting back on the road with minimal hassle.

Why Water Damage Is Dangerous for Your Car Key Fob

Car key fobs are small but powerful devices that contain delicate electronic components necessary for communicating with your vehicle. When exposed to water, these components are at risk of short circuits, corrosion, and malfunction. Even a small amount of moisture inside the fob can cause lasting damage that may make the fob useless.

The Internal Components at Risk

Inside a car key fob, you’ll find a tiny circuit board, battery, and often a small transponder chip. These elements are vital for your key fob to function properly, as they allow you to lock, unlock, and start your car remotely. When water enters the fob, it can cause these parts to short-circuit, preventing the key fob from transmitting signals or interacting with your car.

The Importance of Quick Action

Water damage can be devastating, but acting quickly can prevent it from becoming permanent. The longer your key fob remains wet, the higher the chances of internal corrosion and irreversible damage. That’s why it’s essential to follow the right steps immediately after your key fob has been exposed to water.

By taking immediate action, you may be able to save your fob from complete failure and avoid expensive replacement costs.

At UK Auto Locksmith, we understand how crucial your key fob is for the functionality and security of your vehicle. Whether you’ve dropped it in a puddle, accidentally washed it, or had it exposed to rain, we’re here to provide expert solutions. If your key fob is beyond repair, don’t worry—we offer fast, reliable replacement and reprogramming services.

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✅ 30min response time
✅ Up to 12 months warranty
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Immediate Actions to Take After Your Car Key Fob Gets Wet

When your car key fob gets wet, acting quickly is key to saving it. The faster you respond, the better the chances that your fob will work again. Here are the steps you should take immediately to reduce the damage:

Step 1: Remove the Battery

The first thing you should do is remove the battery, especially if your key fob has a removable battery. This step is crucial to prevent any potential short circuits caused by moisture. Even if the battery doesn’t appear to be affected by the water, it’s best to remove it to protect both the battery and the internal components of the fob.

Step 2: Dry the Exterior

Use a dry cloth or towel to gently wipe away any visible water from the surface of the key fob. Avoid using excessive force, as this could push water deeper into the internal components. A soft, lint-free cloth is ideal for this task, as it will help remove moisture without causing any further damage.

Step 3: Use Silica Gel or Rice

To draw out moisture trapped inside the fob, place it in a bowl of uncooked rice or, preferably, silica gel packets. Silica gel is a better option as it absorbs moisture more effectively than rice. Leave the fob in the rice or silica gel for at least 24-48 hours, ensuring that the moisture has been fully absorbed.

Step 4: Avoid Heat Sources

While it might be tempting to use a hairdryer or place the fob near a radiator to speed up the drying process, this can actually cause more harm than good. Excessive heat can damage the delicate internal components of your fob, making it unusable. Instead, let the key fob dry naturally at room temperature.

If your Car key fob got wet because of the weather, we encourage you to read our article about how to secure your car keys from weather damage.

Why Water Damage Is Dangerous for Your Car Key Fob
What to Do If Your Car Key Fob Still Isn’t Working

After following the drying steps, it’s time to check if your car key fob is functioning. While some key fobs may work just fine after being dried, others may still show signs of malfunction. Here’s what you should do next if your fob isn’t working as expected:

Step 5: Inspect the Fob for Visible Damage

Carefully inspect the key fob for any visible signs of damage, such as corrosion, cracks in the casing, or discoloration. If any of these signs are present, it may indicate that the fob is beyond repair, and you may need to replace it. In some cases, the damage could be minor and repairable with the help of a locksmith.

Step 6: Reinsert the Battery and Test

Once the fob is completely dry, reinsert the battery and test it to see if it works. If the fob still doesn’t work, the battery might need to be replaced, or there could be an issue with the internal components. Sometimes, the fob may not work immediately, so give it a few minutes to test again.

If your key fob continues to malfunction, it may be time to consult a professional. At UK Auto Locksmith, we specialize in providing fast, reliable car key fob replacement and repair services. We can assess whether your key fob needs a simple battery replacement, reprogramming, or if it requires a completely new fob.

Our experienced team is always available to help you get back on the road quickly. Don’t let a malfunctioning key fob cause unnecessary stress—contact us for professional assistance and solutions tailored to your needs.

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Steps to Take If Your Car Key Fob Is Water-Damaged

Yes, there’s a chance your key fob will still work after getting wet, especially if you act quickly and follow the drying steps properly. If the internal components have not been damaged by the water, drying the fob out completely may restore its functionality.
We recommend letting your key fob dry for at least 24-48 hours using rice or silica gel to absorb moisture. The more thoroughly the fob dries, the better the chances it will function properly again.
Do not use excessive heat, such as a hairdryer or radiator, as it can damage the internal components. Additionally, avoid trying to reassemble the fob before it is completely dry to prevent further damage.
You can attempt to clean and dry the fob using the steps we’ve outlined, but if the fob still doesn't work after drying, it's best to consult a professional locksmith. They can diagnose the issue and offer a solution, whether it’s repairing or replacing the key fob.
If your key fob isn’t working after it got wet, the water may have caused internal corrosion or a short circuit, even if it appeared to be dry. In such cases, a replacement or professional repair might be necessary to restore functionality.
If your key fob still isn’t working after drying, it's time to contact UK Auto Locksmith for assistance. Our team can help assess the damage and offer solutions such as key fob repair, reprogramming, or replacement to get you back on the road.