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Why a Seat Ibiza Replacement Key Won't Work

The Ibiza is now equipped with the latest generation of driver assistances. Travel Assist makes sure your vehicle keeps up with traffic, while Lane Assist takes the worry out of changing lanes.

Remove the key fob battery compartment cover (A). Using a flat-head screwdriver or a thumb nail to pry the cover upwards and replace the CR2025.

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If your key fob isn't working but you're not able to reprogram it with an entirely new code, the most likely culprit is a dead battery in the coin. It is possible to replace the battery yourself within a matter of ten minutes.

Start by opening the key from the side without the rings made of metal. There's a clip-on lid, that you can lift open using your nail. The old battery will be pulled out through the hole in the middle. Be aware that if you replace the battery improperly or with a battery that is not appropriate, it could cause damage to the remote. Replace the battery with the same voltage, size, and specification as the original.

If your key fob is submerged in water, you might have to clean the chip prior to replacing the battery. This is especially true if it was dropped into the ocean, or soapy water. It's crucial to do this as soon as possible, because water can cause damage to the electronic chip of your key fob.

Worn Buttons

Seat Ibiza keys stop working the majority of the time often due to the battery that powers the coin is dead. It's a simple fix that takes just few minutes. The key fob can cease to function if the buttons are worn. It's simple to fix and only requires replacing the old key shell with an updated one.

It is vital to replace the battery of the button cell correctly or the key fob could be damaged. It is recommended to make sure you use a new battery that has the same size, voltage and specification. It's also essential that the polarity of the new battery is facing upwards.

The key fob is protected by rubber seals that will keep water out. Submerging the keyfob in water could cause the seals of the keyfobs to break, which could damage the chip's electronic components. This is usually the case if you accidentally drop your key fob into the pool or leave it in the rain. If your key fob still doesn't work even after replacing it or reprogramming it, the receiver module could be faulty.

Water Damage

The rubber seals on the key fob block water from getting to the chip. This does not stop the occasional splash. If your fob has been through a wash cycle or an ocean swim, it may have damaged the chip.

It is possible to fix this by taking the battery off and cleaning the chip with isopropyl alcohol, or electronic cleaner. After drying, let it dry before returning it. If the chip has been damaged it will need to be replaced with a new one.

If your key fob doesn't work even after changing the battery or reprogramming, the problem could be with the receiver module. This is the part of the car that receives signals from the key fob and relays them to the key ignition system. If you have an extra key fob, you can test it. The central locking should start to work and the ignition system light should turn on. If this doesn't happen, then the receiver module may be faulty. This is a costly fix but can be rectified by an expert at your local garage.

Radio Interference

The receiver module in your key could be causing interference. It can be fixed by an alternative key and the new receiver module made by Seat parts.

To replace the battery, simply remove the key and gently lift the cover of the key fob's battery compartment with your thumb or a screwdriver made of flat heads. Take off the old CR2025 and replace it with a new battery, making sure that the polarity is correct. You can also use a standard key with the transponder chip transferred from the worn or damaged key. This can be coded and cut to fit your vehicle in the event that it is needed.


Faulty Receiver Module

The receiver module in the fob that you have in your keys transmits radio signals to the car. The module may be damaged when the fob ceases to function. This can be identified using an OBDII scanner device or by contact your dealer.

The remote keyless entry system is susceptible to interference from other devices that operate at the same frequency. This includes mobile phones, electrical devices, and even some household appliances.

If the key fob has been exposed to clean tap water, it could be possible to clean the chip with paper towels and isopropyl Alcohol. If the fob's key has been submerged in soapy or salty water or left for a long time on a damp surface, it is almost certain to be damaged and need to be replaced.

To change the battery, use an incredibly small screwdriver with a flat-head or a fingernail to push open the compartment for the button cell batteries (B). Remove the battery that was in there and replace it with the new CR2025 battery making sure that the "+" polarity of the battery is facing upwards.

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