Key Fob Replacement for the Seat Ibiza
This fifth-generation Ibiza is updated, is a contender for the supermini segment. It competes with the Renault Clio, Peugeot 208 and Ford Fiesta.
Use a small flat-head screwdriver or a thumbnail (A) to remove the battery compartment cover of the key fob (B). Replace the CR2025 batteries, making sure it is installed in the proper direction.
Dead Coin Battery
A dead coin battery is the most common cause of a key fob that isn't locking or unlocking your car. It usually shows signs before it dies like a decrease in range or no power at any time. It is simple to replace it with a brand new (CR2025) one at your local grocery store. Be aware that using the wrong or unsuitable batteries can damage your key fob. Make sure that the new battery has the same size, specification and voltage as the old one.
If your fob was exposed to clean water, such as rain or soapy tap water, it is likely that the chip inside has been damaged by corrosion. You might try cleaning your chip using isopropyl alcohol or an electronic cleaner to try to see if this helps but it is more likely that the chip is damaged.
The most straightforward solution is to buy an entirely new key fob. They are readily available from major car dealers and are fitted by a skilled mechanic. They can also be bought online from places like ebay. The best way to work is to work on a flat, level surface with excellent lighting. It is easier to work with the smaller parts. This also helps you to avoid putting something back in the wrong place. Always keep the key fob in a secured and safe place.
Water Damage
If your fob's key gets wet from dropping it into the pool or by slipping it in the washing machine you might think that it's lost but there's still hope. The problem is when the circuit board in the fob comes into contact with water - it makes an excellent conductor and cuts off components. It also accelerates corrosion and rust.
Luckily, this is a simple issue to fix. Find something absorbent to put inside the fob. A tissue or paper towel would be ideal. Use a cotton swab that contains isopropyl for cleaning the circuit board and any other components. Let the circuit board dry for a few days in a dry, warm environment.
Replace the battery when the fob has dried out with a new one that has the same size and the same polarity ('+' (pointing upwards). The fob isn't easy to open to access the battery, however when you have a flat head screwdriver at hand it should be easy to insert. Once seat key battery replacement is assembled and working, it should operate as usual. If it fails you may need to re-program it or replace the module.
Radio Interference
If a keyfob functions properly, it broadcasts an audio frequency that is received by a receiver module inside your vehicle. If the signal is interrupted, your key fob won't work. This could be due objects, weather conditions or other transmitters operating in the same frequency range near your car.
In this situation it is recommended to replace the battery on your key fob. It is best to replace the battery of your key fob.
A few LED lighting aftermarkets which uses the same frequency as a remote control key fob may interfere with the signal, preventing it from reaching receiver modules. The LED light must be switched off or changed to a different frequency to avoid interference.
If you have a new battery in your key fob and the issue persists, it's possible that the antenna on your key fob is damaged or malfunctioning. The antenna is responsible for transmitting signals between the key fob and the receiver module. An OBDII scan can help you identify the issue by telling you exactly what's wrong with the system. The scanner will ask you to provide information about your vehicle, including the model, make and engine type as well as the VIN number.
Faulty Receiver Module
The key fob has a receiver module that transmits the signals to lock and unlock. All electronic components that are on-board will stop working if the receiver module becomes inoperable. If this is the case, reprogramming with an OBDII scanner or replacing the key fob could help.
This issue could be caused by a dead battery in the coin-cell either from water damage or signal interference. You can reset your on-board computer if you disconnect the 12 Volt batteries for 15 mins. This will draw out any remaining electrical energy that could cause issues. Begin by removing the cable from the negative terminal of the battery first, followed by the positive terminal. After 15 minutes, reconnect the battery in reverse order first, positive second.
Dirt or water can harm the internal chip of the key fob. If your key quit working after getting wet, you need to clean the electronic component with isopropyl ethanol or an electronic cleaner prior to installing the battery. If it stopped working after exposure to salty or soapy water, the chip is probably damaged and needs to be replaced.
Another possibility is a defective antenna module fuse that transmits the signal to lock or unlock to the vehicle. Depending on your model the fuse could be located in a variety of locations such as the engine bay, the side of the dashboard, under the rear seat, or trunk.