Key Fob Replacement for the Seat Ibiza
The facelifted fifth generation Ibiza is an interesting contender in the supermini segment. It competes with the Renault Clio and Peugeot 208 as well as the Ford Fiesta.
Utilizing a thumb nail or small flat head screwdriver (A) lift upwards the key fob compartment cover (B). Replace the coin battery CR2025 by ensuring it is placed in the correct direction and in the right polarity.
Dead Coin Battery
The most frequent reason for a key fob to not unlock or lock your vehicle is a dead coin battery. When it is dead you will notice an increase in range or no power. It is easy to replace it with a new one (CR2025) from a local store. You should be aware that using the wrong or unsuitable batteries can damage your key fob. Make sure that the battery you purchase is the same size, specification and voltage as your old one.
If your device was exposed to clean water such as rain or soapy tap water, it is likely that the electronic chip inside has been damaged by corrosion. You can try cleaning the chip with isopropyl Alcohol or an electronic cleaner to test if it helps, but it is likely the chip has been damaged and fried.
The most simple solution is to get a new key fob. Most major car dealers offer key fobs and they can be installed by a seasoned mechanic. They can also be purchased on ebay. The best way to work is to work on a flat surface with adequate lighting. This will make it easier to work on the small parts inside. It also allows you to avoid placing things in the wrong place. Always keep 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 the water or accidentally wash it. But there's a way to salvage it. If the circuit board inside the fob is exposed to water, it develops a conductor which shorts the components. It also accelerates the process of corrosion and rust.
This is a simple fix. Simply find something absorbent and put it inside the fob - paper towl or tissue can be used. Use a cotton swab that contains isopropyl for cleaning the circuit board, as well as any other components. Allow the circuit board to air dry in a warm, dry environment for several weeks.
When the fob has been drained then replace the battery with an alternative of the same size and the same polarity ('+' that is pointing upwards). It is a challenge to open the fob to reach the battery but if you have a small flat-head screwdriver at hand, it will slide in easily. After the fob is reassembled it should function like a normal. If it doesn't, then you'll need to reprogram it or replace the receiver module.
Radio Interference
When a keyfob operates correctly, it emits the radio frequency which is picked up by a receiver module in your car. If the signal is distorted in some way your key fob will not function as expected. This could be due weather conditions, objects or other transmitters operating on the same frequency band close to your car.
In this instance it is recommended to replace the battery on your key fob. It is best to replace the battery on your key fob.
A few aftermarket LED lighting fixtures that uses the same frequency as a remote key fob might interfere with the signal and prevent it from reaching the receiver modules. To avoid interference, the LED lighting should be turned off or switched to an alternative frequency.
If you have a brand new battery in your key fob, and the problem persists, it's possible that the antenna of your key fob is damaged or malfunctioning. The antenna is responsible for transmitting a signal 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 for details about your particular vehicle like the model and make of the vehicle, the type of engine, and VIN number.
Faulty Receiver Module
The key fob comes with a receiver module that transmits signals to lock and unlock the key fob. If seat alhambra key fails, all of the on-board electronics will cease to function. Reprogramming the keyfob using an OBDII scan, or replacing it could help.
There are a variety of possible reasons for this problem, including an empty 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 eliminate any remaining electrical energy that could be causing issues. Begin by removing your cable from the negative terminal of the battery first, followed by the positive terminal. After 15 minutes, you can reconnect your battery in reverse order. First, positive and then negative, and finally negative.
Dirt or water can cause damage to the internal chip of the key fob. If your key's function stopped after getting wet, you need to clean the electronic component with isopropyl ethanol or an electronics cleaner before installing the battery. If the key ceases to function after being exposed to salted or soapy water, it's likely that the chip is damaged and must be replaced.
Another possibility is a faulty antenna module fuse that sends the lock or unlock signal to the vehicle. Based on the model you have the fuse could be located in a variety of places including the engine bay, the side of the dashboard, under the rear seat, or trunk.