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Key Fob Replacement for the Seat Ibiza This fifth-generation Ibiza, which has been redesigned is a serious contender for the supermini segment. It goes toe-to-toe with the Renault Clio, Peugeot 208 and Ford Fiesta. With a thumb nail or small screwdriver that has a flat head (A), prise upwards the key fob compartment cover (B). Replace the coin battery CR2025 and ensure it is in the proper direction and polarity. Dead Coin Battery A dead battery on a coin is the most frequent cause of a key fob not locking or unlocking your vehicle. Before it dies, you will notice the decrease in range or no power. It is easy to replace with a brand new one (CR2025) from a local store. Be aware that faulty or unsuitable batteries may damage the key fob. Make sure the battery you replace is the same size and voltage, and has the same specification. If your fob was exposed to pure water, such as rainwater or soapy tap water It is probable that corrosion has caused damage to the chip's electronic components. You could clean the chip with isopropyl or electronic cleaners to determine if that helps, but that the chip has been damaged. The most simple solution is to get a new key fob. seat exeo key programming of major car dealers sell them and they can be installed by a skilled mechanic. You can also buy them on the internet, for instance on eBay. It is recommended to work on a work surface that has good lighting. It is much easier to work on small pieces. This can also help to avoid putting things back in the wrong place. Always work on the key fob in a secure and safe location. Water Damage If your fob's key gets soaked by dropping it in the pool or slipping it in the washing machine you might think it's a goner but there's still hope. When the circuit board in the fob is exposed to water, it transforms into conductor that shorts the components. It also speeds up the process of rust and corrosion. Fortunately, this is not difficult to fix. Find something absorbent to put inside the fob. A paper towel or tissue will be ideal. Use a cotton swab with isopropyl to clean the circuit board as well as any other components. Let the circuit board dry for several days in a dry, warm environment. Replace the battery after the fob has dried out by a new one with the same size and polarity ('+' (pointing upwards). It can be difficult to open the fob in order to access the battery, but if you have a small screwdriver that is flat handy it should slide in easily. Once the fob has been repaired, it should function in a normal manner. If it doesn't, you might need to reprogram it or replace the receiver module. Radio Interference If a key fob is functioning correctly, it transmits a radio frequency signal, which is received by the module inside your car. However, if the signal is interrupted in some way the key fob won't function properly. This could be due to objects such as weather conditions, objects, or other transmitters operating at the same frequency as your car. In this scenario it is recommended to replace the battery in your key fob. It is recommended to replace your key fob's battery. Some LED lighting from the aftermarket that uses the same frequency as a remote key fob could interfere with the signal and stop it from reaching the receiver modules. To avoid interference, the LED lights must be switched off or switched to the opposite frequency. If you have a new battery on your key fob but the problem persists, it is possible that the antenna on the key fob is damaged or has stopped working. This is significant because the antenna is responsible for sending signals from the key fob to the receiver module. An OBDII scan will assist in diagnosing the issue by revealing exactly what's wrong with your system. The scanner will ask for information about your vehicle, including the make, model and engine type as well as the VIN number. Faulty Receiver Module The key fob has a receiver module that transmits the signals for locking and unlock. If the receiver module fails then all the on-board electronics will stop working. If this is the case, reprogramming with an OBDII scanner or replacing the key fob could assist. This issue can be caused by a dead battery in the coin-cell or water damage, or signal interference. You can try resetting the on-board computer by disconnecting the battery 12 volts for 15 minutes. This will eliminate any remaining electrical energy that could be causing issues. Begin by removing your cable from the negative terminal of the battery first, then the positive terminal. After 15 minutes, reconnect your battery in reverse order. First, positive and then negative the next. Dirt and water can damage the internal chip of the key fob. If your key's function stopped when it was wet, you need to clean the electronic component with isopropyl ethanol or an electronic cleaner prior to installing the battery. If the key stops working after exposure to salted or soapy water, it's likely that the chip is damaged and needs to be replaced. Another possibility is a faulty antenna module fuse, which transmits the lock or unlock signal to the vehicle. Based on the model you have the fuse could be located in one of several locations, such as the engine bay, to the left of the dashboard, under the rear seat, or trunk.