The refreshed fifth-generation Ibiza is an option in the competitive supermini segment. It competes with the Renault Clio, Peugeot 208 and Ford Fiesta.
With a thumb nail or small flat head screwdriver (A), prise upwards the key fob battery compartment cover (B). Replace the CR2025 battery, making sure it is installed in the proper direction.
Dead Coin Battery
A dead battery on a coin is the most frequent cause of a key fob not locking or unlocking your vehicle. When it is dead, you will see an increase in range, or no power. It is simple to replace it with a brand new (CR2025) one from your local supermarket. It is important to be aware that using the wrong or non-compatible batteries could damage your key fob. Make sure that the new battery is the same size, specification and voltage as the older one.
If your device has been exposed to clean water, for example rainwater or soapy tap water it is possible that corrosion has caused damage to the chip's electronic circuit. You could try cleaning the chip using isopropyl alcohol or an electronic cleaner to see if it helps but it is most likely that the chip is damaged.
A new key fob is the most straightforward solution. Most major car dealers offer keys and can be installed by a seasoned mechanic. They can also be bought on the internet through sites like ebay. It is recommended to work on a work surface that has good lighting. It is much easier to work on the smaller parts. You'll also be able to avoid putting something in the wrong place. Always keep your key fob in an area that is secure and safe.
Water Damage
You might think that your key fob is ruined if you drop it in a pool or accidentally wash it. But there's still hope. When the circuit board in the fob is exposed to water, it becomes a conductor which shorts the components. It also speeds up the process of rust and corrosion.
Fortunately, this is easy to fix. Find something absorbent to place inside the fob. A tissue or paper towel would work well. Use a cotton swab with isopropyl to cleanse the circuit board and any other components. Let the fob air dry in a warm, dry environment for several weeks.
Once the fob is dried out and the battery is replaced with a new one (of the same size and polarity ('+' pointing upwards). The fob isn't easy opening to access the battery, but should you have a flat-head screwdriver on hand it will be simple to insert. Once the fob has been rebuilt, it should operate in a normal manner. If it doesn't work, you'll have to reprogramme it or replace the receiver module.
Radio Interference
When a key fob working correctly, it sends an audio frequency signal that is received by the receiver module inside your car. If the signal is distorted in any way, your key fob won't perform as it should. This can be caused by objects like weather conditions or other transmitters operating at the same frequency as your car.
In this situation it is best to replace the battery on your key fob. It is best to replace the battery in your key fob.
Some LED lighting accessories that utilizes the same frequencies as key fobs for remote control could interfere with the signal, stopping it from reaching receiver modules. The LED's lighting needs to be switched off or changed to a different frequency to avoid interference.
If the issue is still present after replacing the battery, the antenna of your key fob could be damaged or not functioning properly. This is important because the antenna is responsible for transmitting signals from the key fob to the receiver module. An OBDII scan will assist in diagnosing the issue by revealing what's wrong with your system. The scanner will ask to provide information about your vehicle including the make, model, engine type and VIN number.
Faulty Receiver Module
The key fob houses a receiver module that transmits the signals needed to lock and unlock. All electronic components that are on-board will cease to function if this module develops a problem. If this happens then reprogramming the module using an OBDII scanner or replacing the key fob itself could help.
There are a few possible causes for this issue such as an empty coin battery, water damage or signal interference. You can reset the on-board computer if you disconnect the 12 Volt batteries for 15 mins. This will eliminate any remaining electrical energy that could be causing issues. The cable should be removed first from the negative terminal, then from the positive terminal. After 15 minutes, connect your battery in reverse order. First positive, then negative the next.
Dirt and water can cause damage to the internal chip of the key fob. If the key fob you purchased stopped working after getting wet, wipe it using isopropyl or an electronic cleaner. After that, replace the battery. If it stopped working after exposure to salty or soapy water, the chip is probably damaged and must be replaced.
A damaged antenna module fuse could also be the cause. It's the fuse that transmits a signal to the vehicle to lock or unlock. Based on the model you have the fuse could be located in a variety of places such as the engine bay, to the left of the dashboard, under the rear seat, or trunk.
