Why a Seat Ibiza Replacement Key Won't Work
The Ibiza is now equipped with a new generation of driver assistances. Travel Assist makes sure your vehicle is able to keep up with traffic flows while Lane Assist takes the worry out of changing lanes.
Remove the key fob cover for the battery compartment (A). With a flat-head screwdriver, or a thumb nail, push the cover upwards. Replace the CR2025.
Dead Coin Battery
If your key fob is not working and you are unable to reprogram it the most likely cause is the battery is dead. You can replace this battery yourself in a mere ten minutes.
The key is opened from the side, without the rings made of metal. You can then open the clip-on lid by using your nail. The old battery can be pulled out through the hole in the middle. Be careful: If you change the battery in a wrong way, or with a battery not suitable, it could cause damage to the remote. Replace the battery with the same voltage, size and specification as the original.
If your key fob was submerged by water, you might also need to clean the chip prior to replacing the battery. This is especially crucial if you've dropped it in the ocean or in soapy wash water. It is crucial to do this immediately, as water could damage the electronic chip of your key fob.
Worn Buttons
Seat Ibiza keys stop working most often because the battery is dead. It's a simple fix that only takes several minutes. Key fobs also stop functioning if the buttons are worn out. This is another fix, and requires you to swap the old key shell for a new one.
It is essential to replace the button cell battery properly otherwise the key fob could become damaged. It is recommended that you always make use of a new battery with the same size as well as the voltage, specifications, and size. It's crucial that the polarity is facing upwards on the new battery.
The key fob is secured by rubber seals, which should keep water out. However submerging the key fob in water can cause the seals' to break and damage the chip inside. This is usually the case if your key fob is left in the rain or drops into the pool. If your key fob doesn't function after replacing or reprogramming it or reprogramming it, the receiver module could be in trouble.
Water Damage
The key fob is fitted with rubber seals that prevent water from getting into the electronic chip inside. This does not stop the occasional splash. If you've gotten through a washing cycle or an ocean dip, the chip may be damaged.
It is possible to fix this by getting rid of the battery and then cleaning the chip using isopropyl ethanol or electronic cleaner. After drying, let it dry before placing it back. If the chip is damaged and needs to be replaced, replace with a brand new one.
If your key fob doesn't work despite changing the battery or programming, the problem could be with the receiver module. This is the part of your car that receives the signals from the keyfob and transmits the signals to the key ignition system. It is possible to test it by using a spare key fob in case you have one. seat ibiza key fob not working should make the ignition system light come on and the central locking activate. If this doesn't occur and the receiver is not working, then it may be faulty. This is a costly fix but can be fixed by an expert at your local garage.
Radio Interference
If the car's radio seems to be acting oddly or the key fob no longer functioning it could be due to an interference issue with the receiver module in the key. It can be fixed by the replacement key using a new receiver module purchased from Seat parts.
To replace the battery, pull off the key piece and then using your thumb nail or a screwdriver with a flat-headed head, gently push upwards the key fob battery compartment cover. Remove the old CR2025 battery and insert a new one, ensuring that it is in the correct orientation. You can also use an ordinary key with a transponder chip which was previously on a worn or damaged key. This can be cut off and coded to your car if required.
Faulty Receiver Module

The receiver module on your key fob is what transmits radio signals to your car. If the fob doesn't work it could be because the module has failed. This can be identified using an OBDII scanner device or by calling your dealer.
The remote keyless entry system is susceptible to interference from other devices operating at the same frequency. This could include mobile phone transmitters, electrical devices, and even some household appliances.
If the key fob is exposed clean tap water, it may be possible for you to clean the chip with paper towels and isopropyl alcohol. If the key fob is submerged in salt or soapy water, or sat on a floor that is wet for long periods of time, this will most likely cause damage and it is likely to need replacing.
To replace the battery in your key fob using a thumb nail or a small flat-head screwdriver to open the cover of the button cell battery compartment (B). Remove the battery that was in place. Insert a new CR2025 and ensure that the "+" polarity is facing up.