Seat Alhambra Key Problems
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There are a variety of reasons why your key fob might not work properly, including a dead battery water damage, receiver module issues or signal interference. This article will walk you through the steps needed to get it back to working.

Water Damage
If your key fob for the seat alhambra survives an wash cycle or a dip in an water or a pool, it's equipped with a waterproof chip. But, you shouldn't do this often because prolonged exposure to water increases chances that the key fob will be damaged. If the key fob ceases to functioning after exposure to clean tap water or rain then simply remove the battery, clean the electronic component with a paper towel and let it dry completely before putting the battery back into. If replacement seat key was exposed to salty or soapy water it is recommended that you clean the chip with isopropyl or electronic cleaner.
Faulty Receiver Module
If the key fob will not lock or unlock even after you've replaced the battery for the button it is possible that the receiver module is suffering from an issue. The good news is that it is a relatively simple and inexpensive repair, you can just disconnect the 12 volt battery for about a couple of minutes (first take off the negative cable and then press the horn button several times) to drain any residual electricity, and then connect it in reverse order e.g. positive cable first and then negative.
ESP Warning Light - If the ESP warning symbol flashes this is normal and signifies that the car is driving on terrains where the traction between the road surface and the tyres is not ideal like snow, gravel or lots of surface water. If the ESP warning light continues to be blinking, it indicates that there is a glitch in the system. This can be detected with a iCarsoft i908 Seat OBD Code Reader kit which will provide a precise fault description.
Dead Coin Battery
A dead coin battery is among the most frequent causes for the seat alhambra keys to stop working. The key fob comes with an insignificant button cell battery that keeps it powered. It should be replaced with a brand new one that is exactly the same size, voltage, and specification as the original. When replacing the battery on the key fob remove all metal clips and ensure that the contacts of the key fob are clean and free of corrosion.
If the key fob was exposed to water (such as soapy or rain tap water) it is recommended to remove and clean the chip with an electronic cleaner or isopropyl alcohol prior to installing a new battery. The chip could be permanently damaged by water. If the key fob still doesn't function after replacing the battery it may be necessary for you to replace the key fob.
Faulty Receiver Module
If your key fob was not working after replacing the battery but it did not function, or stopped working suddenly the receiver module could have encountered a problem. The receiver module takes the radio frequency signals from your remote keyfob, and transforms them into electrical signals that are then followed by other modules within the car.
If the receiver module is faulty and is not able to take any commands from your remote key fob. In this case you will require a dealer to reprogramme your key fob and install an additional receiver.
The key fob features rubber seals that prevent water from getting into the chip inside. If you immerse your key fob into salty or soapy water, the chips inside could be damaged. If your key fob isn't able to work, you could try cleaning the chip with isopropyl or electronic cleaner.
If the keys have been paired but the receiver module has developed a fault you can try to reboot all of the onboard electronics by removing the battery with 12 volts for a few minutes. Connect the battery in reverse (negative cable to positive first). This resets all the electronic components onboard and bring them back into operation.
Electronic Chip Faulty
The key fob houses an electronic chip which transmits a signal the receiver module every time the key is used. If the signal doesn't coincide with the one stored by the car the immobilizer will stop the engine and prevent the vehicle from beginning. If the key fob isn't functioning and you are not able to reprogram it then it could be due to a faulty chip.
The chip inside the key fob is not permanent to the device and might have to be replaced to get it to work again. This can be done by getting the key fob removed from its case, and using pins or needles to touch each metal clip. You'll require replacement in the event that they have been damaged or damaged by corrosion. Make sure that any replacement batteries are of the same voltage, size and specifications as the original one.
Seat Alhambra is a popular and well-designed model, can be troublesome due to certain parts or components. A few owners have reported issues with the automatic climate control system. It is prone to fail and get stuck in a certain setting. The infotainment systems can also fail and cause freezing of the screens.