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Key Fob Replacement for the Seat Ibiza This facelifted fifth-generation Ibiza is a contender in the crowded supermini segment. It competes with Renault Clio and Peugeot 208 as well as the Ford Fiesta. Using a thumb nail or small flat head screwdriver (A) and pull upwards the key fob battery compartment cover (B). Replace the CR2025 batteries, making sure it is placed in the correct direction. Dead Coin Battery A dead coin battery is the most common reason of a key fob not locking or unlocking your car. Before it dies you'll see a decrease in range or no power. It is easy to replace it with a brand new (CR2025) one from your local store. You should be aware that using the wrong or unsuitable batteries could cause damage to your key fob. Make sure that the new battery is the same size, specification and voltage as the previous one. If your device was exposed to clean water, like rain or soapy tap water, it is possible that the chip inside has been damaged due to corrosion. You can clean the chip with isopropyl or electronic cleaners to see if this aids, but that the chip has been damaged. The most straightforward solution is to get a new key fob. The majority of major car dealers sell key fobs and they can be installed by a seasoned mechanic. They can also be bought on ebay. The best method is to work on a flat surface that has good lighting. This will make it easier to work on the smaller parts inside. This will also help you to avoid putting things back in the wrong location. Always work on the key fob in a secured and safe area. Water Damage If your key fob gets damaged by dropping it in the pool or slipping it in the washing machine, you may think it's a goner but there's still hope. The issue begins when the circuit board inside the fob is in contact with water – it is a great conductor and shorts components. It also speeds up corrosion and rust. Luckily, this is simple to fix. Simply find something absorbent and put it inside the fob – paper towl or tissue is ideal. Then you can use a cotton swab dipped in isopropyl alcohol to wipe down the circuit board and other components to get rid of any residue of battery acid and contamination. Let g28carkeys.co.uk in a warm, dry environment for a few weeks. Once the fob is dried out, replace the battery with an alternative of the same size and the same polarity ('+' with the upwards direction). It can be difficult to open up the fob to get access to the battery, but if you have a small flat-head screwdriver available, it should be able to slide into easily. Once the fob is reassembled it should function just as normal. If it doesn't, you may require reprogramming it or replace the receiver module. Radio Interference When a key fob is functioning correctly, it transmits the radio frequency signal which is received by the receiver module inside your car. If the signal is damaged in any way your key fob will not work properly. This could be due to things, weather conditions or other transmitters operating on the same frequency band close to your car. In this scenario it is best to replace the battery in your key fob. In this instance it's best to replace the battery on your key fob. A few aftermarket LED lighting fixtures that utilizes the same frequency as a remote key fob could interfere with the signal and block it from reaching the receiver modules. The LED light must be switched off or changed to a different frequency in order to avoid interference. If the issue continues to persist after installing a new battery, the antenna on your key fob may be damaged or not functioning properly. This is significant because the antenna is responsible for sending a signal from the key fob to the receiver module. An OBDII scan can help you identify the issue by telling you exactly what's wrong with your system. The scanner will ask you for details about the vehicle you own including the make and model, engine type, and VIN number. Faulty Receiver Module The key fob has an electronic receiver that sends the signals to lock and unlock. If the receiver module fails, all of the on-board electronic components will stop functioning. Reprogramming the key fob using an OBDII scan, or replacing it could help. This issue can be caused by a dead coin cell battery or water damage, or signal interference. You can reset the on-board computer if you disconnect the 12 Volt batteries for 15 mins. This will flush out any residual power that may be causing problems. Take the cable off first of the negative terminal, then the positive terminal. After 15 minutes, connect the battery in reverse order beginning with positive first, and negative second. The internal chip of the key fob could be damaged by water or dirt. If your key fob stopped working after being wet, wash it using isopropyl or an electronic cleaner. After that, replace the battery. If the key stopped working after exposure to soapy or salted water, it is likely that the chip has been fried and needs to be replaced. Another possibility is an inoperable antenna module fuse that sends the signal to lock or unlock to the vehicle. The fuse may be located in several places, depending on the type of vehicle. For example it could be beneath the rear seat or trunk, or on the side of the dashboard.