Key Fob Replacement for the Seat Ibiza
The facelifted fifth generation Ibiza is a contender in the crowded supermini segment. It competes against the Renault Clio and Peugeot 208 as well as the Ford Fiesta.
Use a small screwdriver or a thumbnail (A) to open the battery compartment cover of the key fob (B). Replace the CR2025 batteries, making sure it is placed in the proper direction.
Dead Coin Battery
A dead coin battery is the most common reason of a key fob not locking or unlocking your vehicle. If it fails, you will see the decrease in range or no power. It is simple to replace it with a new (CR2025) one from your local store. Be aware that defective or unsuitable batteries may damage the key fob. Make sure that the battery you choose to replace is the same size and voltage as well as the same specifications.
If your fob was exposed to clean water, like rain or soapy tap water, it is possible that the chip inside has been damaged due to corrosion. You could clean the chip with isopropyl or electronic cleaners to see if this helps, but the chip is fried.
The simplest option is to buy a new key fob. Most major car dealers offer them and they can be installed by a seasoned mechanic. They can also be bought on ebay. The best thing to do is to work on a flat, level surface with adequate lighting. It is much easier to work on the smaller parts. You will also be able to avoid placing something in the wrong place. Always keep the key fob in a secure and safe area.
Water Damage
If your fob's key gets soaked by dropping it in the pool or fumbling it in the washing machine you might think it's over, but there's hope. When the circuit board inside the fob is exposed to water, it develops a conductor that shorts out the components. It also accelerates corrosion and rust.
Luckily, this is simple to fix. Find something absorbent, and place it inside the fob. Paper towl or tissue works well. Then, use a cotton swab dipped in isopropyl alcohol and wipe down the circuit board as well as other components to eliminate any residue of battery acid and contamination. Allow the circuit board to air dry in a warm, dry environment for several weeks.
Replace the battery after the fob is dry by replacing it with a new one that is the same dimensions and polarity ('+' (pointing upwards). The fob might be difficult opening to access the battery, but If you have a flat-head screwdriver in your toolbox it should be easy to slide in. Once the fob has been repaired, it should function in a normal manner. If it isn't working it may be necessary to re-program it or replace the module.
Radio Interference
If a keyfob works correctly, it emits a radio signal that is received by a receiver module inside your vehicle. If the signal is interrupted the key fob won't work. This could be due to objects or weather conditions, or other transmitters operating on the same frequency in close proximity to your car.
This can cause your key fob to not activate the vehicle's functions such as the ignition switch or security system. In this instance it is best to replace the battery inside your key fob.
A few LED lighting products that uses the same frequencies as the remote control key fob could interfere with the signal, stopping it from reaching receiver modules. To avoid interference, the LED lights must be switched off or switched to the opposite frequency.
If you have a new battery on your key fob but the issue persists, it is possible that the antenna on your key fob is damaged or inoperable. This is significant since the antenna is responsible for transmitting signals from the key fob to the receiver module. An OBDII scan can assist in diagnosing the issue by revealing what's wrong with the system. The scanner will ask you for information about your specific vehicle, such as the model and make, engine type, and VIN number.
Faulty Receiver Module
The key fob features a receiver module that transmits signals to lock and unlock the key fob. seat ibiza keys on-board electronic components will cease to function if this module develops a problem. If this is the case then reprogramming the module using an OBDII scanner or replacing the key fob itself may help.
This problem can be caused by a dead coin-cell battery or a water damage or signal interference. You can try resetting the on-board computer by disconnecting the battery 12 volts for 15 minutes. This will drain any remaining electricity that may be causing issues. Begin by removing your cable from the negative terminal first, then the positive terminal. After 15 minutes, you can reconnect your battery in reverse order. Positive first, then negative the next.
The internal chip in the key fob can also be damaged by dirt or water. If your key's function stopped when it was wet, clean the electronic component using isopropyl alcohol or an electronics cleaner before reinstalling the battery. If the key stops working after being exposed to soapy or salted water, it is likely that the chip has become damaged and must be replaced.
Another possibility is an inoperable antenna module fuse that sends the lock / unlock signal to the vehicle. Based on the model you have the fuse can be located in one of several locations such as the engine bay, on the side of the dashboard, under the rear seat, or in the trunk.