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Key Fob Replacement for the Seat Ibiza This refreshed fifth-generation Ibiza is an option in the competitive supermini segment. It competes with 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 CR2025 coin battery, making sure it is in the proper direction and polarity. Dead Coin Battery A dead coin battery is the most common cause of a key fob that isn't locking or unlocking your car. It usually displays symptoms before it dies such as a decreased range or no power at all. It is simple to replace it with a brand new (CR2025) one from your local supermarket. Be aware that faulty or unsuitable batteries may damage the key fob. Make seat ibiza key replacement that the new battery has identical in size, specifications and voltage as your old one. If your device has been exposed to clean water, such as rainwater or soapy tap water, it is likely that corrosion has damaged the chip's electronic circuit. You could try cleaning the 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. A new key fob is the easiest solution. Most major car dealers sell key fobs and they can be installed by a seasoned mechanic. They can also be purchased online from places like ebay. It is best to work on a surface that has adequate lighting. This will make it easier to work on the small parts inside. This can also help to avoid putting things back in the wrong location. Always work on the key fob in a secure and safe place. Water Damage You may think your key fob is lost if you drop it into the pool or accidentally wash it. However, there's still a chance. If the circuit board inside the fob is exposed to water, it transforms into conductor that shorts the components. It also accelerates the process of rust and corrosion. This is an easy fix. Find something absorbent to put inside the fob. A tissue or a paper towel will work. Use a cotton swab that contains isopropyl to cleanse the circuit board as well as any other components. Allow the circuit board to air dry in a dry, warm environment for several weeks. When the fob has been drained then replace the battery with a new one (of the same size and the same polarity ('+' that is pointing upwards). The fob isn't easy to open to get to the battery, however If you have a flat-head screwdriver, it should be easy to slide in. After the fob is repaired, it should function like a normal. If it doesn't, you may require reprogramming it or replace the receiver module. Radio Interference If a key fob is functioning correctly, it transmits the radio frequency signal which is picked up by the receiver module inside your car. However, if the signal is interrupted in some way your key fob will not function properly. This could be due to objects such as weather conditions, objects, or other transmitters that operate on the same frequency in close proximity to your car. This can cause your key fob to not be able to activate the vehicle's functions such as the ignition switch or the security system. In this situation it is best to replace the battery on your key fob. Some LED lighting accessories that utilizes the same frequencies as key fobs for remote control can interfere with the signal, preventing it from reaching receiver modules. The LED light must be switched off or changed to a different frequency to prevent interference. If the issue continues to persist after installing a new battery, the antenna of your key fob may be damaged or inoperable. The antenna is responsible for transmitting a signal between the key fob and the receiver module. An OBDII scan will aid in diagnosing the issue by revealing exactly what's wrong with your system. The scanner will ask for details about your car including the model, make and engine type as well as the VIN number. Faulty Receiver Module The key fob has an electronic receiver that transmits signals for locking and unlocking. The electronic components on the board will cease to function if this module has a problem. If this happens Reprogramming using an OBDII scanner or replacing the key fob may aid. This problem can be caused by a dead coin cell battery or water damage, or signal interference. It is possible to reset the on-board computer if you disconnect the 12 Volt batteries for 15 minutes. This will flush out any residual power that may be causing problems. Start by removing the cable from the negative terminal first, then the positive terminal. After 15 minutes, you can reconnect your battery in reverse order. First positive, then negative the next. The internal chip inside the key fob may be damaged by dirt or water. If the key fob you purchased stopped working after being wet, wash it with isopropyl or electronics cleaner. After that, replace the battery. If the key stopped working after exposure to salted or soapy water, it's likely that the chip has been fried and needs to be replaced. A damaged antenna module fuse could be a cause. This is the fuse that sends an electronic signal to the vehicle to lock or unlock. The fuse can be found in various places, based on the model. For instance it could be beneath the rear seat, or in the trunk, or on the side of the dashboard.