Key Fob Replacement for the Seat Ibiza
The refreshed fifth-generation Ibiza is an interesting contender in the supermini segment. It competes against the Renault Clio and Peugeot 208 as well as the Ford Fiesta.
Make use of a small screwdriver with a flat head or a thumbnail (A) to break open the battery compartment cover on the key fob (B). Replace the CR2025 battery, making sure it is installed in the correct direction.
Dead Coin Battery
The most frequent reason for a key fob to not allow you to lock or unlock your vehicle is a dead coin battery. It will usually show signs before it dies like a lower 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. Be sure that the replacement battery is the same size and voltage as well as the same specification.
If your device has been exposed to clean water, like rainwater or soapy tap water, it is likely that corrosion has damaged the electronic chip. You may try cleaning the chip with isopropyl alcohol or an electronic cleaner to see if it helps but it is likely that the chip has been damaged and fried.
The most efficient solution is to buy an entirely new key fob. They are available from most major car dealers and are fitted by an experienced mechanic. You can also buy them online, for example on eBay. The best way to work is to work on a flat surface with adequate lighting. It makes it easier to work with small pieces. You'll also be able to avoid putting things in the wrong spot. Always work on your key fob in a place that is secure and safe.
Water Damage
You may think your key fob is destroyed if drop it into the pool or accidentally wash it. There's G28 . When the circuit board on the fob is exposed to water, it transforms into conductor that shorts the components. It also accelerates corrosion and rust.
This is a simple solution. Simply locate something absorbent and put it inside the fob. A paper towl or tissue works well. Use a cotton swab that contains isopropyl for cleaning the circuit board, and any other components. Let the fob air dry in a dry, warm environment for a few weeks.
Once the fob is dried out, replace the battery with an alternative of the same size and polarity ('+' with the upwards direction). The fob isn't easy to open to get to the battery, but should you have a flat-head screwdriver in your toolbox it will be a breeze to slide in. Once the fob has been reassembled it should function in a normal manner. If it fails, you may have to re-program it or replace the module.
Radio Interference
When a keyfob is working properly, it transmits an audio frequency that is picked up by a receiver module in your vehicle. However, if the signal is damaged in some way the key fob will not function as expected. This can be caused by objects or weather conditions, or other transmitters that operate on the same frequency near your car.
In this situation it is best to replace the battery on your key fob. In this scenario it is recommended to replace the battery on your key fob.
Some LED lighting aftermarket that utilizes the same frequency as a remote control key fob could interfere with the signal, preventing it from reaching receiver modules. The LED light must be switched off or changed to a different frequency to be able to avoid interference.
If the issue continues to persist after replacing the battery, the antenna on your key fob could be damaged or inoperable. The antenna is responsible for transmitting signals between the key fob and the receiver module. Utilizing an OBDII scanner will aid in diagnosing the issue by telling you what is wrong with the system. The scanner will ask you for information about your specific vehicle like the make and model, engine type, and VIN number.
Faulty Receiver Module
The key fob is equipped with a receiver module that transmits signals to lock and unlock the key fob. If this module fails, all of the on-board electronic components will stop functioning. If this happens then reprogramming the module using an OBDII scanner or replacing the key fob may help.
There are several possible reasons for this problem, including the battery of the coin is dead, water damage or signal interference. Try resetting the computer on board by disconnecting the 12 volt battery for 15 minutes. This will eliminate any remaining electrical energy that could be causing problems. Take the cable off first of the negative terminal, then from the positive terminal. After 15 minutes, connect the battery in reverse order first: positive, then negative second.
The internal chip of the key fob can be damaged by water or dirt. If your key's function stopped after getting 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 is likely damaged and should be replaced.
Another possibility is a damaged antenna module fuse that sends the lock and unlock signal to the vehicle. Based on the model you have the fuse can be located in one of the many locations including the engine bay, the side of the dashboard, beneath the rear seat, or trunk.