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Key Fob Replacement for the Seat Ibiza

The facelifted fifth generation Ibiza is an option in the competitive supermini segment. It is up against the Renault Clio, Peugeot 208 and Ford Fiesta.

Make use of a small screwdriver with a flat head or a thumbnail (A) to open the battery compartment cover of the key fob (B). Replace the CR2025 battery, making sure it is installed in the correct direction.

Dead Coin Battery

The most common reason for a key fob to not be able to lock or unlock your vehicle is a dead coin battery. Before it dies you'll notice the decrease in range or no power. It is easy to replace with a brand new one (CR2025) from a local store. Be aware that faulty or unsuitable batteries can damage the key fob. Make sure that the battery you purchase is identical in size, specifications and voltage as the older one.

If your device was exposed to clean water, like 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 the chip is damaged.

The most simple solution is to purchase an entirely new key fob. Major car dealers sell key fobs and they can be installed by a seasoned mechanic. They can also be purchased on ebay. It is best to work on a work surface that has adequate lighting. It is easier to work with small parts. This can also help to avoid putting something back in the wrong location. Always keep your key fob in a location that is secure and safe.

Water Damage

If your fob's key gets damaged by dropping it in the pool or fumbling it in the wash you might think that it's lost but there's hope. The problem begins when the circuit board within the fob comes into contact with water. It is a great conductor and shorts out components. It also accelerates the process of corrosion and rust.

This is an easy solution. Find something absorbent, and place it inside the fob. A paper towl or tissue can be used. Use a cotton swab with isopropyl to cleanse the circuit board and any other components. Allow the board to dry for several days in a warm and dry environment.


Replace the battery after the fob has dried with a fresh one with the same size and polarity ('+' (pointing upwards). It can be tricky to open the fob to get access to the battery, but if you have a small flat-head screwdriver at hand, it will slide in easily. After the fob has been reassembled, it should work as normal. 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 sends the radio frequency signal which is received by the receiver module in your car. If the signal is disrupted, your key fob won't function. This could be due to objects or weather conditions, or other transmitters that operate at the same frequency close to your vehicle.

This could cause your key fob not to be able to trigger the vehicle's features for example, the ignition switch or security system. In this scenario it is recommended to replace the battery on your key fob.

Some LED lighting from the aftermarket that utilizes the same frequency as the remote key fob may interfere with the signal and stop it from reaching the receiver modules. To prevent interference, the LED lighting should be turned off or to an alternative frequency.

If the issue continues to persist after installing a new battery, the antenna of your key fob may be damaged or malfunctioning. seat replacement key is responsible for transmitting signals between the key fob and the receiver module. An OBDII scan will help diagnose the problem by telling you exactly what's wrong with your system. The scanner will ask you to provide information about your vehicle, including the make, model, engine type and VIN number.

Faulty Receiver Module

The key fob contains the receiver module which transmits the signals for locking and unlock. The electronic components on the board will cease functioning if this component develops a problem. Reprogramming the key fob by an OBDII scan, or replacing it may help.

There are a number of possible reasons for this problem, including a dead coin battery water damage or signal interference. You can reset the onboard computer by disconnecting the 12 volt batteries for about 15 minutes. This will remove any remaining electricity that could be causing problems. Begin by removing your cable from the negative terminal of the battery first, then the positive terminal. After 15 minutes, connect the battery in reverse order first: positive, then negative second.

The internal chip in the key fob could be damaged by dirt or water. If your key quit working after getting wet, wash the electronic component with isopropyl alcohol or an electronics cleaner before reinstalling the battery. If it stops working after exposure to salty or soapy water the chip is likely damaged and must be replaced.

A defective antenna module fuse could be a cause. It's the fuse that sends a signal to the vehicle to lock or unlock. Depending on the model the fuse could be located in one of the many locations, such as the engine bay, side of the dashboard, under the rear seat, or trunk.

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