Key Fob Replacement for the Seat Ibiza
The fifth-generation Ibiza is redesigned and is a contender in the supermini segment. It competes with Renault Clio and Peugeot 208 as well as the Ford Fiesta.
Using a thumb nail or small screwdriver with a flat-headed head (A) to lift up the key fob battery compartment cover (B). Replace the coin battery CR2025 to ensure that it is fitted in the proper direction and polarity.
Dead Coin Battery

A dead coin battery is the most typical cause of a key fob that isn't locking or unlocking your car. It will usually show symptoms before it dies such as a decreasing range or no power at all. It is easy to replace it with a brand new (CR2025) one from your local supermarket. Be aware that incorrect or defective batteries could damage the key fob. Make sure that the new battery has identical in size, specifications and voltage as the previous one.
If your device has been exposed to clean water, for example rainwater or soapy water from the tap, it is likely that corrosion has caused damage to the chip's electronic circuit. You can try cleaning the chip with isopropyl Alcohol or an electronic cleaner to check if it works but it is likely the chip has fried.
A new key fob is the easiest solution. They are available at most major car dealers and are fitted by a professional mechanic. You can also purchase them online, for example on eBay. It is best to work on a surface that has adequate lighting. It makes it easier to work with small pieces. You'll also be able to avoid placing something in the wrong place. Always keep your key fob in a place that is safe and secure.
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 over, but there's a chance. The problem starts when the circuit board in the fob comes into contact with water - it makes an excellent conductor and cuts off components. It also speeds up the process of rust and corrosion.
Fortunately, this is easy to fix. Find something absorbent to place inside the fob. A tissue or a paper towel will be ideal. Use a cotton swab soaked in isopropyl to wash the circuit board and any other components. Allow the circuit board to air dry in a dry, warm environment for several weeks.
After the fob has been drained and the battery is replaced with an alternative of the same size and polarity ('+' with the upwards direction). The fob may be difficult opening to access the battery, however If you have a flat-head screwdriver on hand it will be simple to insert. Once the fob is reassembled and working, it should operate like normal. If it isn't working, you may have to re-program it or replace the module.
Radio Interference
When a key fob functioning properly, it emits a radio frequency signal, which is interpreted by the receiver module inside your car. If the signal is disrupted in any way the key fob will not perform as it should. This could be due to objects, weather conditions, or other transmitters that operate on the same frequency near your car.
In this situation it is best to replace the battery in your key fob. It is recommended to replace the battery on your key fob.
A few LED lighting products that uses the same frequencies as a remote control key fob could interfere with the signal, preventing it from reaching receiver modules. The LED's light source must be turned off or switched to a different frequency to keep out interference.
If you've got a new battery on your key fob but the issue persists, it is likely that the key fob's antenna is damaged or malfunctioning. This is important since the antenna is responsible for transmitting signals 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 the system. G28 Car Keys will ask you to provide information about your vehicle including the model, make engine type, and VIN number.
Faulty Receiver Module
The key fob has the receiver module which transmits the signals to lock and unlock. If this module develops a fault and the on-board electronics will cease to function. If this happens it is possible to reprogramme the module using an OBDII scanner or replacing the key fob itself may aid.
There are a number of possible causes for this issue, including an empty coin battery, water damage, or signal interference. You can try resetting the on-board computer by disconnecting the 12 volt battery for 15 minutes. This will drain any residual electric current that could cause problems. Begin by removing your 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.
The internal chip inside the key fob could be damaged by dirt or water. If your key stopped working after being wet, clean the electronic component with isopropyl Alcohol or an electronic cleaner prior to reinstalling the battery. If it is not working after exposure to salty or soapy water the chip may be fried and will need to be replaced.
Another possibility is a defective antenna module fuse, which transmits the lock or unlock signal to the vehicle. Depending on the model the fuse could be located in a variety of locations like the engine bay, the side of the dashboard, under the rear seat, or trunk.