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Why a Seat Ibiza Replacement Key Won't Work The Ibiza is now equipped with a new generation of driver assistance. Travel Assist makes sure your vehicle is able to keep up with traffic movements while Lane Assist takes the worry out of changing lanes. Remove the cover for the battery compartment on the key fob (A). Using a flat-head screwdriver or a thumb nail, pull the cover upwards, then replace the CR2025. Dead Coin Battery If your key fob is not working and you aren't able to reprogram it, the most likely cause is the battery is dead. The replacement of this battery should make it operational in no time – you can do it yourself in less than 10 minutes. To change the coin battery inside your seat ibiza replacement keys, flip it open from the non metal ringed side first. There's a simple clip-on lid, that you can lever open using your nail. The battery that was in there can be pulled out through the hole in the middle. Note: Changing the battery in a wrong manner or using an unsuitable battery can damage the remote key. Always replace the battery with one of the same voltage, size and specification as the original. If your key fob was submerged in water it may be necessary to clean the chip prior to replacing the battery. It is particularly important if the device was dropped in the sea or soapy water. This must be addressed immediately since exposure to water can damage the electronic chip and cause the key fob to cease working. Worn Buttons Seat Ibiza keys stop working the majority of the time often due to the battery that powers the coin is dead. This is not a problem and takes only a few minutes. The key fob also stops functioning if the buttons are worn out. This is another fix, and requires you to swap out the old keyshell for a new one. It is vital to replace the button cell battery properly or the key fob might be damaged. It is recommended to always utilize a brand new battery of the same size in terms of voltage, size, and specification. seat leon spare key 's also essential that the polarity of the new battery is towards the upwards. The key fob is secured by rubber seals that should keep water out. The submersion of the keyfob could cause the seals of the keyfobs to break, which could damage the chip's electronic components. This is the most likely scenario in the event that your key fob has been left in the rain or drops into the pool. If your key fob still doesn't work even after replacing it or reprogramming it, the receiver module may be faulty. Water Damage The key fob's rubber seals that prevent water from getting into the electronic chip inside. This doesn't stop occasional splash. If your fob has survived a wash cycle or a swim in the ocean it may have damaged the chip. It is possible to fix this by taking the battery off and cleaning the chip with isopropyl alcohol, or electronic cleaner. Let it dry completely and then put it back. If the chip has been damaged it will have to be replaced with a brand new one. If your key fob still does not work after changing the battery and reprogramming it, then it could be due to a problem with the receiver module. This is the part of the car that receives the signals from the keyfob and transmits the signals to the key ignition system. It can be tested by using a spare key fob in case you have one. The central locking should start to work and the ignition system light should come on. If it doesn't, the receiver module is not working properly. This is a costly repair but can be rectified by a professional at your local garage. Radio Interference The receiver module on your key could cause interference. Seat parts can provide an alternative key with a new receiver. To replace the battery, take out the key part and then using your thumb nail or a screwdriver with a flat head, gently pull upwards the key fob's compartment cover. Remove the CR2025 that was in place and replace it with a new battery, ensuring that the polarity is in the right place. You can also make use of an ordinary key that has a transponder chip which was before on a worn or damaged key. The chip can be coded and cut to fit your vehicle in the event that it is needed. Faulty Receiver Module The receiver module in your key fob is what transmits radio signals to the car. The module could be defective when the fob ceases to function. You can diagnose this using an OBDII scanner or by calling your dealer. Other devices that operate on the same frequency can interfere with the remote keyless entry system. This includes mobile phones, electronic devices, and even household appliances. If the fob is exposed to clean tap water, it could be possible to clean the electronic chip using paper towels and isopropyl alcohol. If the fob's key is submerged in soapy or salt water or is placed on a wet floor for long periods, it is likely to cause damage and it will likely require replacement. To change the battery in your key fob make use of a thumb nail or a small screwdriver that has a flat head to break open the cover of the button cell compartment (B). Remove the old battery and then insert an CR2025 replacement battery, making sure the '+' polarity is directed upwards.