There's A Reason Why The Most Common Seat Ibiza Key Replacement Debate Isn't As Black And White As You Might Think
How to Fix Seat Ibiza Key Problems

The compact Ibiza is crucial to Seat's turnaround plans as it was responsible for 52 percent of the money-losing Spanish firm's revenue last year. It has received a makeover and new features that will help it attract more buyers.
One example is the use of technology for lighting to improve the cabin's ambience and give it personal touches. Also, the glove compartment is larger to cater for young families.
Remote keyless entry system
The remote keyless entry of the seat ibiza enables you to lock and unlock the vehicle by pressing of the button on the key fob. There are a variety of reasons that the system might not work, such as a dead battery damaged by water or signal interference. Fortunately, these issues are easily addressed with just a few steps.
A dead battery in the coin is the most typical reason for a key fob that won't lock or unlock. This can be easily replaced in a matter of minutes. If the key fob was exposed to clean tap water or light rain, it's probably still fine, but submerging it in seawater or soapy water could harm the chip inside. If this is the case, you can clean it using a paper towel and some isopropyl ethanol prior to replacing the battery.
To change the battery, simply open the cover and pull up the cover using your thumb or a flat-head screwdriver. Take out the old CR2025 battery and replace it with a brand new one with the polarity facing in the same direction as the old battery.
Key fob not locking, or unlocking the doors
If you're unable to lock or unlock your doors using your key fob It could be due a variety of reasons. Double check that all doors and the trunk (boot) have been closed. Your vehicle will inform you if the doors are open by flashing an indicator light or by making a sound.
Interference is another reason your key fob won't function. This could happen when other transmitters are in close proximity or you're near objects that block the signal. Try using an additional key to determine whether this is working.
If your key fob has been exposed to water, immediately remove the battery and clean it. This will stop the chip from corroding, and ensure it has a steady supply of power. If the battery is not working properly, you can replace it with an alternative battery with the same voltage and dimensions. Then, reconnect the battery's terminals, and then test again the key. This will reboot all of the electronics that are on board.
Dead coin battery
A dead coin battery is the most likely culprit if your key fob won't lock or unlock the doors. It's a simple fix that can be done within a matter of minutes and you should be able to find replacement batteries at any auto parts retailer. Be sure to replace the battery with a replacement that's similar in size in voltage, capacity, and specification. To prevent water damage you must also clean all exposed electronic components using isopropyl ethanol or an electronic cleaner. If you expose the chip inside the key of your Seat Ibiza to salty or soapy water, it will be fried.
If you notice that the key fob is getting less effective at locking and unlocking doors it could be an indication that the battery has drained out.
Faulty key
Seat's Ibiza model is one of its most well-known models. Its interior is far more luxurious than one would think of from a compact hatchback. The latest updates include Apple CarPlay, Android Auto and a host of other features. There's even a 9.2-inch touchscreen on the dashboard.
If your Ibiza key fob isn't working out of the blue and you are unable to reprogram it, it's most likely that the internal chip has failed. This can happen if drop the key fob on the floor, or if it becomes wet.
To replace the battery on your Ibiza keyfob open the key and then press it into the groove located at the back of the key. This will reveal the clip-on cap (A). Use a flat-head, or thumb nail to pry the cover out (B) and take it off (C). Remove the old CR2025 battery (D) and then insert an alternative one with the '+' orientation facing upwards. Replace the cover, then put the key back into it's place. Check to see if it is working. If it is working then you can replace it and reprogram it to ensure that it will work with your vehicle.
Receiver module that is defective
Key fob problems are often caused by a defective receiver module on the seat Ibiza. seat leon key fob can be caused by a variety of factors that include a dead or defective coin battery, signal interference, or a malfunctioning electronic chip inside the key fob. The immobilizer system ensures that the key is functioning correctly and disables the engine in the event that it detects a message that is not compatible.
If your key fob was exposed to water, the first thing you need to do is remove the battery and clean the electronic component using isopropyl alcohol or electronic cleaner. Afterwards, you should let it dry completely before replacing the battery.
To replace the battery, lift the cover of your key fob, and make use of a flat-head or thumb nail to pry it upwards. Insert the new battery, making sure that its "+" polarity faces upwards. Close the battery compartment after replacing the battery. Close the key fob. In the majority of instances, this will resolve the problem. However, if the key fob still doesn't work after trying these solutions, it could be time to replace it.