Key Fob Replacement for the Seat Ibiza
This facelifted fifth-generation Ibiza is a contender in the crowded supermini segment. It competes with the Renault Clio and Peugeot 208 as well as the Ford Fiesta.
Use a small screwdriver or a thumbnail (A) to pry up the battery compartment cover on the key fob (B). Replace the CR2025 battery, making sure it is placed in the correct direction.
Dead Coin Battery
A dead battery on a coin is the most frequent cause of a key fob that isn't locking or unlocking your vehicle. It will usually show indications before it dies, like a lower range or no power at any time. It is simple to replace with a brand new one (CR2025) from a local supermarket. Be aware that defective or unsuitable batteries may damage the key fob. Make sure that the battery you purchase is the same size, specification and voltage as your old one.
If your fob was exposed to clean water like rain or soapy tap water it is likely that the chip inside has been damaged due to corrosion. You could clean the chip with isopropyl or electronic cleaners to determine if that helps, but it's likely the chip is fried.
The most straightforward solution is to buy a new key fob. They are available at most major dealerships and can be fitted by a professional mechanic. You can also buy them online, such as on eBay. The best method is to work on a level surface with good lighting. This makes it easier to work on the small parts inside. You will also be able to avoid placing things in the wrong place. Always keep your key fob in an area that is secure and safe.
Water Damage
If your key fob gets damaged by dropping it in the pool or throwing it in the washing machine you might think it's over, but there's a chance. When the circuit board in the fob is exposed to water, it turns into a conductor which shorts the components. It also speeds up corrosion and rust.
Fortunately, this is easy to fix. Find something absorbent to put inside the fob. A tissue or a paper towel will work. Then, use a cotton swab dipped in isopropyl alcohol to wipe down the circuit board as well as other components to eliminate any battery acid residue and contamination. Let the circuit board dry for a few days in a dry and warm environment.
Replace the battery once the fob is dry with a new one with the same dimensions and the same polarity ('+' (pointing upwards). The fob might be difficult opening to access the battery, however when you have a flat head screwdriver at hand it will be a breeze to slide in. After the fob is put back together, it should work in a normal manner. If it doesn't work, you'll require reprogramming it or replace the receiver module.
Radio Interference
If a keyfob works correctly, it emits an audio frequency that is picked up by a receiver module in your vehicle. If the signal is interrupted the key fob won't function. This may be due to objects, weather conditions or other transmitters operating on the same frequency band close to your vehicle.
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.
Some aftermarket LED lighting that uses the same frequency as the remote key fob may interfere with the signal and stop it from reaching the receiver modules. The LED light must be switched off or changed to a different frequency to prevent interference.
If you've just replaced the battery in your key fob and the issue persists, it's possible that the antenna of your key fob is damaged or has stopped working. The antenna is responsible for transmitting signals between the key fob and the receiver module. An OBDII scanner can help diagnose this issue by telling you what is wrong with the system. The scanner will ask you for details about your vehicle, such as the model and make as well as the engine type and VIN number.
Faulty Receiver Module
The key fob comes with a receiver module which transmits signals to lock and unlock the key fob. All electronic components that are on-board will stop working if this module is affected by a malfunction. Reprogramming the keyfob using an OBDII scan or replacing it can help.
This problem can be caused by a dead coin-cell battery either from water damage or signal interference. It is possible to reset the on-board computer if you disconnect the 12 volt batteries for about 15 minutes. This will draw out any remaining power that could cause issues. Begin by removing the cable from the negative terminal first, then the positive terminal. After 15 minutes, reconnect your battery in reverse order. Positive first, then negative next.
The internal chip of the key fob can be damaged by dirt or water. If the key fob you purchased stopped working after getting wet, clean it using isopropyl or an electronic cleaner. Then, you can reinstall the battery. If seat arona key stops working after exposure to salty or soapy water, the chip is probably damaged and needs to be replaced.
A faulty antenna module fuse may also be the cause. It is the fuse that transmits an electronic signal to the vehicle to lock or unlock. Depending on the model the fuse can be located in one of the many locations, such as the engine bay, on the side of the dashboard, under the rear seat, or trunk.