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seat ibiza key replacement G28 for the Seat Ibiza This fifth-generation Ibiza that has been redesigned is a contender for the supermini segment. It competes against the Renault Clio and Peugeot 208 as well as the Ford Fiesta. Use a small flat-head screwdriver or a thumbnail (A) to pry up the battery compartment cover on the key fob (B). Replace the coin battery CR2025, making sure it is in the correct direction and in the right polarity. Dead Coin Battery The most frequent reason for a key fob that does not allow you to lock or unlock your car is due to a dead coin battery. Before it dies, you will notice a decrease in range or no power. It is easy to replace it with a fresh one (CR2025) from a local supermarket. You should be aware that using the wrong or incompatible batteries can damage your key fob. Make sure that the new battery has the same size, specification and voltage as the old one. If your fob was exposed to pure water, such as rainwater or soapy tap water it is possible that corrosion has damaged the electronic chip. You might try cleaning your chip with isopropyl Alcohol or an electronic cleaner to try to see if this helps but it is most likely that the chip has been damaged and fried. The most straightforward solution is to buy an entirely new key fob. They can be purchased from a variety of major car dealers and can be fitted by a professional mechanic. You can also buy them online, like on eBay. It is recommended to work on a surface that has good lighting. It is much easier to work on the small parts. This also helps you to avoid putting something back into the wrong place. Always work on your key fob in a place that is secure and safe. Water Damage If your key fob gets wet from dropping it into the pool or slipping it in the washing machine you might think it's over, but there's still hope. If the circuit board inside the fob is exposed to water, it transforms into a conductor which shorts the components. It also speeds up the process of corrosion and rust. Luckily, this is simple to fix. Simply locate something absorbent and put it inside the fob – paper towl or tissue can be used. Use a cotton swab soaked in isopropyl for cleaning the circuit board as well as any other components. Allow the circuit board to air dry in a warm, dry environment for several weeks. After the fob has been drained then replace the battery with another one of the same size and the same polarity ('+' that is pointing upwards). The fob might be difficult to open in order to access the battery, but should you have a flat-head screwdriver on hand it will be a breeze to slide in. Once the fob is assembled and working, it should operate as normal. If it doesn't, then you'll require reprogramming it or replace the receiver module. Radio Interference When a key fob is functioning properly, it sends the radio frequency signal which is interpreted by the receiver module inside your car. However, if the signal is interrupted in any way your key fob will not function as expected. This can be caused by objects like weather conditions or other transmitters that operate on the same frequency near your car. In this instance it is recommended to replace the battery on your key fob. It is recommended to replace the battery of your key fob. A few aftermarket LED lighting fixtures that uses the same frequency as a remote key fob could interfere with the signal and block it from reaching the receiver modules. To prevent interference, the LED lighting must be switched off or switched to a different frequency. If you've got a new battery in your key fob, and the problem persists, it is likely that the antenna on the key fob is damaged or inoperable. The antenna is responsible for transmitting signals between the key fob and the receiver module. An OBDII scanner can aid in diagnosing the issue by revealing what's wrong with the system. The scanner will request details about your vehicle, such as the make and model as well as the engine type and VIN number. Faulty Receiver Module The key fob has an encoder module that transmits the signals to lock and unlock. If this module fails then all the on-board electronics will cease to function. Reprogramming the key fob with an OBDII scan or replacing it may help. This problem can be caused by a dead coin cell battery either from water damage or signal interference. It is possible to reset the on-board computer if you disconnect the 12 Volt batteries for 15 mins. This will flush out any residual electric current that could cause issues. Begin by removing the cable from the negative terminal of the battery first, then the positive terminal. After 15 minutes, reconnect the battery in reverse order beginning with positive first, and negative second. Dirt and water can cause damage to the internal chip of the key fob. If your key fob stopped functioning after being soaked, clean it with isopropyl, or an electronics cleaner. Then reinstall the battery. If it is not working after exposure to soapy or salty water the chip may be damaged and needs to be replaced. A damaged antenna module fuse could also be the reason. It is the fuse that transmits an alert to the vehicle to lock or unlock. The fuse can be found in a variety of locations, based on the model. For example, it could be under the rear seat, or in the trunk, or the side of the dashboard.