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Why a Seat Ibiza Replacement Key Won't Work The Ibiza is now equipped with a new generation of driver assistances. Travel Assist makes sure your vehicle keeps up with traffic flow while Lane Assist takes the worry out of changing lanes. Remove the key fob's battery compartment cover (A). Utilizing a flat-head screwdriver or a thumb nail, push the cover upwards and replace the CR2025. Dead Coin Battery If your key fob has stopped working but you're not capable of reprogramming it with the latest code, the most likely reason is a dead coin battery. It is possible to replace the battery yourself in less than ten minutes. To change the coin battery inside your seat ibiza replacement key, open it from the non-metal ringed side first. You can open the clip-on lid using your nail. The old battery is then pushed through the hole at the middle. Be aware that changing the battery incorrectly or with an unsuitable battery can damage the remote key. Replace the battery using the same voltage, size and specification as the original. If your key fob was submerged in water, you might also have to clean the chip prior to replacing the battery. This is especially important when you drop it in the ocean or in soapy washing water. It's crucial to do this immediately, as water can damage your key fob's electronic chip. Worn Buttons Seat Ibiza keys stop working most often because the coin battery is dead. It is a simple fix that takes only few minutes. The key fob can also stop functioning if the buttons are worn out. It is simple to fix and only requires replacing the old key shell with an entirely new one. It's important to note that the battery for the button needs to be replaced correctly or damage could occur to the key fob. It is recommended that you always make sure you use a new battery that has the same size, voltage and specifications. It's also important that the side of the new battery is directed upwards. Rubber seals are designed to keep water away from the key fob. However when you submerge the key fob in water may cause the seals' to break and damage the chip inside. This is often the case when the key fob is placed in the rain or accidentally drops into the pool. If your key fob does not work after replacing it or reprogramming, the receiver module might be faulty. Water Damage The rubber seals on the key fob block water from getting into the electronic chip. However it's not enough to stop the occasional bath or splash. If you've survived a wash cycle or swimming in the ocean the chip could be damaged. It is possible to fix this by taking off the battery and cleaning the chip with isopropyl alcohol or an electronic cleaner. Let it dry completely, then put it back. If the chip is fried it will need to be replaced with a brand new one. If your key fob does not work after changing the battery or programming, it could be an issue with the receiver module. This is the part of the car that receives signals from the key fob and relays signals to the key ignition system. If you have a spare key fob you can test it. It should trigger the ignition system light come on and the central locking switch activate. If this doesn't happen then the receiver module may be defective. This is a costly repair but can be fixed by an expert from your local garage. Radio Interference The receiver module inside your key could be causing interference. It can be fixed by replacing the key with an entirely new receiver module from Seat parts. To replace the battery, pull off the key piece and then using your thumb nail or screwdriver that has a flat head, gently pry upwards the key fob battery compartment cover. Take off the old CR2025 battery and insert a fresh one, ensuring that it is in the correct the polarity. You can also make use of an ordinary key that has transponder chips that were before on a worn or damaged key. This can be cut off and coded to your car if required. Faulty Receiver Module The receiver module is the part on the key fob, which transmits the radio signals to your vehicle. The module could be faulty when the fob ceases to function. This can be diagnosed using an OBDII scan tool or by contact with the dealer. The remote keyless entry system is vulnerable to interference from other devices that operate on the same frequency. This includes mobile phone transmitters, electrical devices, and even a few household appliances. If the fob is exposed to clean tap water, it might be possible to clean the electronic chip using isopropyl alcohol and paper towels. If seat leon key fob replacement was submerged in salty or soapy water or sat for a long time on a wet surface, it is most likely to be damaged and need to be replaced. To change the battery, you can use a small screwdriver with a flat head or a fingernail to pry open the compartment to access the button cell batteries (B). Remove the old battery. Insert a new CR2025 and ensure that the “+” polarity is facing up.