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Seat Key Explained In Less Than 140 Characters
Why a Seat Ibiza Replacement Key Won't Work

A new generation of driver assists takes the Ibiza to a completely new level. Travel Assist ensures that your vehicle keeps pace with the traffic, while Lane Assist eliminates the stress of changing lanes.

Take off the battery compartment cover on the key fob (A). With a thumb nail, or flat-head screwdriver. Pull upwards on the cover. Replace the CR2025 battery.

Dead Coin Battery

If your key fob has stopped functioning and you're not in a position to reprogram it using a new code, then the most likely culprit is a dead coin battery. Replacing this should bring it back to life again - you can do it yourself in less than 10 minutes.

Open the key first from the side without the metal rings. You can remove the clip-on lid by using your nail. The old battery can then be pushed out through the hole in the middle. Note: If you replace the battery in error, or with a battery not suitable, it may harm the remote. Replace the battery using the same voltage, size and specification as the original.

In addition, if the key fob you have purchased has been submerged in water, you might require cleaning the chip before replacing the battery. This is especially crucial if you've dropped it in the sea or soapy washing water. It is imperative to take action immediately as exposure to water can damage the chip's electronic circuit and cause the key fob to stop working.

Worn Buttons

Seat Ibiza keys stop working the majority of the time often due to the battery that powers the coin is dead. This is simple to fix and can be done in a couple of minutes. The key fob may be inoperable if its buttons are worn. This is also a simple fix that requires you to swap the old keyshell for an entirely new one.

It's important to know that the battery for the button is required to be replaced in a timely manner or damage could be caused to the key fob. It is recommended to always make sure you use a new battery with the same size as well as voltage and specifications. It's also crucial that the polarity of the new battery is in the direction of upwards.


The key fob is protected by rubber seals, which should keep water out. However submerging the keyfob in water may cause the seals' to break and cause damage to the electronic chip inside. This usually happens if you accidentally drop your key fob into the pool or leave it in the rain. If the key fob won't work after replacing it or reprogramming it, then the receiver module could be damaged.

Water Damage

The key fob is fitted with rubber seals to prevent water reaching the electronic chip inside. However this doesn't stop occasional splash or bath. If your pet survived a wash cycle or a swim in the ocean it may have damaged the chip.

It is possible to fix this by removing the battery and cleaning the chip using isopropyl alcohol, or electronic cleaner. Allow it to dry completely, then put it back. If the chip has become damaged, it will have to be replaced with a new one.

If your key fob isn't function after changing the battery or reprogramming it, there could be a problem 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. If you have an extra key fob, you can test it. The central locking should activate and the ignition system light should be lit. If this doesn't happen, then the receiver module could be defective. This is a costly fix but it can be fixed by an expert at your local garage.

Radio Interference

If the car's radio seems to be acting erratically or the key fob no longer functioning it could be caused by an interference problem with the receiver module within the key. Seat parts could provide an alternative key with an entirely new receiver.

To replace the battery, pull off the key piece and using your thumb nail or screwdriver that has a flat head, gently pry upwards the key fob's battery compartment cover. Remove the old CR2025 batteries and insert a fresh one, ensuring that it is in the proper the polarity. You can also use a standard-sized key with the transponder chip transferred from the damaged or worn key. It can be cut and coded to your car, if needed.

Faulty Receiver Module

The receiver module on the fob that you have in your keys transmits radio signals to your car. The module may be damaged when the fob ceases to function. This can be detected with an OBDII scan tool or by calling the dealer.

The remote keyless entry system is vulnerable to interference from other devices that operate at the same frequency. This can include wireless phone transmitters, electronic devices, and even some household appliances.

If thekeylab.co.uk is in contact with clean tap water, it could be possible to clean the chip using paper towels and isopropyl Alcohol. If the key fob is submerged in soapy or salt water or is placed on a floor that is wet for prolonged periods, this will almost certainly result in damage, and it is likely to need replacing.

To change the battery in your key fob using a thumb nail or a small screwdriver that has a flat head to break open the cover of the button cell compartment (B). Remove the old battery and then insert a new CR2025 battery, making sure the '+' polarity is facing upwards.