Key Fob Replacement for the Seat Ibiza
This fifth-generation Ibiza that has been redesignated, is a contender for the supermini segment. It competes against the Renault Clio, Peugeot 208 and Ford Fiesta.
Use a small flat-head screwdriver or a thumbnail (A) to pry up the battery compartment cover of the key fob (B). Replace the CR2025 batteries, making sure it is inserted in the proper direction.
Dead Coin Battery
The most frequent reason for a key fob to not lock or unlock your car is due to a dead coin battery. After it has died you'll see a decrease in range or no power. It is simple to replace it with a brand new (CR2025) one at your local grocery store. Be aware that faulty or unsuitable batteries can damage the key fob. Make sure that the new battery is identical in size, specifications and voltage as the previous one.
If your fob was exposed to clean water such as rain or soapy tap water it is possible that the electronic chip inside has been damaged by 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 been damaged and fried.
The simplest solution is to purchase a new key fob. Most major car dealers offer keys and can be installed by a skilled mechanic. You can also buy them online, such as on eBay. The best way to work is to work on a flat surface with adequate lighting. It makes it easier to work with the smaller parts. This will also help you to avoid putting things back in the wrong location. Always keep the key fob in a secure and safe place.
Water Damage
If your key fob gets wet from dropping it into the pool or by slipping it in the wash you might think that it's lost but there's a chance. When the circuit board in the fob is exposed to water, it develops a conductor which shorts the components. It also accelerates the process of rust and corrosion.
This is an easy solution. Find something absorbent to place inside the fob. A paper towel or tissue will be a good choice. Use a cotton swab soaked in isopropyl for cleaning the circuit board, and any other components. Let the fob dry out for some time in a warm and dry environment.
Once the fob is been drained and the battery is replaced 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 have a flat-head screwdriver, it should be easy to insert. Once the fob has been rebuilt, it should operate in a normal manner. If it doesn't, then you'll require reprogramming it or replace the receiver module.
Radio Interference
If a key fob is functioning properly, it emits the radio frequency signal which is received by the receiver module inside your car. If the signal is interrupted in any way the key fob will not function as expected. This may be due to things, weather conditions or other transmitters operating on the same frequency band near your car.
In this case it is recommended to replace the battery in your key fob. In this scenario it's best to replace the battery on your key fob.
A few LED lights that are aftermarket and uses the same frequency as the remote key fob may interfere with the signal, preventing it from reaching the receiver modules. The LED lighting must be turned off or switched to a different frequency in order to be able to avoid interference.
If you have a brand new battery on your key fob but the issue persists, it's possible that the antenna of your key fob is damaged or not functioning properly. This is important since the antenna is responsible for sending an indication from the key fob to the receiver module. An OBDII scan can aid in diagnosing the issue by revealing what's wrong with your system. seat keys will ask to provide information about your vehicle including the make, model, engine type and VIN number.
Faulty Receiver Module
The key fob is equipped with an encoder module that transmits the signals to lock and unlock. If the receiver module develops a fault then all the on-board electronic components will stop functioning. If this is the case then reprogramming the module using an OBDII scanner or replacing the key fob itself could help.
This problem can be caused by a dead coin-cell 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 flush out any residual electric current that could cause problems. Start by removing the cable from the negative terminal of the battery first, then the positive terminal. After 15 minutes, connect the battery in reverse order first, positive second.
Dirt and water can cause damage to the internal chip of the key fob. If your key fob stopped functioning after getting wet, clean it with isopropyl or electronic cleaner. Then, reinstall the battery. If it is not working after exposure to soapy or salty water the chip is likely damaged and should be replaced.
A damaged antenna module fuse could also be the cause. This is the fuse that sends an alert to the vehicle to lock or unlock. The fuse can be located in a variety of places, based on the model. For instance it could be beneath the rear seat, or in the trunk, or the side of the dashboard.