Key Fob Replacement for the Seat Ibiza
This refreshed fifth-generation Ibiza is an attractive contender in the supermini segment. It competes against the Renault Clio and Peugeot 208 as well as the Ford Fiesta.
Using a thumb nail or small screwdriver with a flat-headed head (A) and pull upwards the key fob battery compartment cover (B). Replace the CR2025 battery, making sure it is placed in the proper direction.
Dead Coin Battery
The most frequent reason for a key fob that does not lock or unlock your vehicle is a dead coin battery. It usually shows symptoms before it dies like a lower range or no power at all. It is simple to replace it with a new (CR2025) one at your local grocery 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 has the same size, specification and voltage as the older one.
If your fob was exposed to clean water, like rain or soapy tap water, it is possible that the electronic chip inside has been damaged due to corrosion. You may try cleaning the chip with isopropyl alcohol or an electronic cleaner to try to see if this helps but it is likely that the chip has fried.
The most simple option is to buy an entirely new key fob. Most major car dealers sell key fobs and they can be installed by a seasoned mechanic. seat keys can also be bought on the internet through sites like ebay. It is recommended to work on a surface that is equipped with adequate lighting. This makes it easier to work on small parts inside. This will also help you to avoid putting things back into the wrong place. Always work on your key fob in an area that is secure and safe.
Water Damage
You may think your key fob is lost if you drop it into a pool or accidentally wash it. But there's still hope. The problem starts when the circuit board in the fob is in contact with water - it is a great conductor, and it shorts out the components. It also speeds up the process of corrosion and rust.
This is a simple fix. Simply locate something absorbent and put it inside the fob - a paper towl or tissue is ideal. Then you can use an alcohol-soaked cotton swab and a cotton swab isopropyl alcohol to clean the circuit board and other components to get rid of any residues of acid from batteries and contamination. 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 polarity ('+' with the upwards direction). The fob may be difficult opening to access the battery, however if you keep a flat-head screwdriver in your toolbox it will be a breeze to insert. Once the fob has been rebuilt, it should operate just as normal. If it isn't working then you might need to re-program it or replace the module.
Radio Interference
If a keyfob works properly, it broadcasts the radio frequency which is received by a module in your vehicle. If the signal is interrupted, your key fob will not work. This could be due to factors like weather conditions, objects, or other transmitters operating within the same frequency band near your vehicle.
This can cause your key fob to not be able to activate the vehicle's systems for example, the ignition switch or security system. In this situation it's best to replace the battery inside 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 stop it from reaching the receiver modules. To avoid interference, the LED lights must be turned off or to the opposite frequency.
If you've got a new battery in your key fob, and the problem persists, it is possible that the antenna on the key fob is damaged or inoperable. The antenna is responsible for transmitting a signal between the key fob and the receiver module. An OBDII scan will assist in diagnosing the issue by telling you exactly what's wrong with the system. The scanner will ask for information about your specific vehicle like the model and make of the vehicle, the type of engine, and VIN number.
Faulty Receiver Module
The key fob is equipped with a receiver module that sends signals for locking and unlocking. If the receiver module fails that causes it to fail, the entire onboard electronics will cease to function. If this is the case then reprogramming the module using an OBDII scanner or replacing the key fob itself could assist.
There are a variety of possible reasons for this problem such as a dead coin battery, water damage or signal interference. You can try resetting the on-board computer by disconnecting the battery 12 volts for 15 minutes. This will remove any remaining power that could be causing 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: positive first, negative second.
The internal chip inside the key fob could be damaged by dirt or water. If your key has stopped working after it got wet, clean the electronic component with isopropyl Alcohol or an electronics cleaner before reinstalling the battery. If it stopped working after exposure to soapy or salty water the chip could be damaged and must be replaced.
Another possibility is a defective antenna module fuse that transmits the lock / unlock signal to the vehicle. Based on the model you have the fuse could be located in one of several locations including the engine bay, on the side of the dashboard, beneath the rear seat, or in the trunk.