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Seat Alhambra Key Problems Seat's family MPV jumbo is among the best in the class when it comes to conserving resale value. And with a new model available it's even better. There are a myriad of reasons the key fob won't perform as it should, including an unresponsive coin battery damage to the receiver module or signal interference. This article will walk you through the steps to get it working again. Water Damage If your key fob for the seat Alhambra is able to withstand an wash cycle or a dip in an ocean or a pool, then it's got a waterproof chip. But don't do this often since prolonged exposure to water increases the risk that the key fob will be damaged. If the key fob ceases to working after exposure to clean water from the tap or rain, then just remove the battery, wipe the electronic component with paper towel and allow it to dry completely before putting the battery back into. If the key fob was exposed to soapy or salty water it is recommended you clean the chip using isopropyl or an electronic cleaner. Faulty Receiver Module If the key fob does not lock or unlock after having replaced the battery in the button cell it could be that the receiver module is suffering from a fault. The good news is that this is a relatively simple and affordable fix, you can disconnect the battery for just a few minutes (first remove the negative cable and then press the horn button numerous times) to eliminate any remaining electrical current and then reconnect it in reverse order e.g. Positive first, then negative. ESP Warning Light – If the ESP warning light is flashing, this is normal and signifies that the vehicle is driving on terrain where the traction between the road surface and the tyres is not ideal like gravel, snow or a lot of surface water. If the ESP light is constantly on, it is a sign that there is a problem with the system. It is possible to identify the problem with a iCarsoft i908 seat OBD code reader kit. It will give you a detailed fault description. Dead Coin Battery A dead battery for the coin is one of the most common causes for the seat alhambra keys to stop working. The key fob is powered by a tiny button-cell battery. It is recommended to replace it with a new one with the same voltage, size, and specification as the original. If you're replacing your battery, ensure that you remove all metal retaining clips from the back of the key fob. You should also make sure that the contacts are free of corrosion. If the key fob was exposed to water, like soapy or rain, it's recommended that you take the battery off and clean the electronic chip with alcohol isopropyl or an electronic cleaner prior to inserting the new battery. The chip can be permanently damaged by water. If the key fob is still not working after replacing the battery, it may be necessary to replace the entire key fob. Faulty Receiver Module If your key fob has stopped working after replacing the battery, but it did not help, or if it stopped working completely out of the blue the receiver module may have developed a fault. The receiver module is able to receive radio frequency signals from your remote keyfob and transforms them into electrical signals which are then used by other modules within the car. If the receiver module has developed a fault it will not respond to any of the commands issued by your remote key fob. In this case, you will need to go to a dealer for reprogramming your key fob and a new receiver module. The key fob is encased with rubber to stop water from getting inside the electronic chip. However, if you submerge the key fob in salty or soapy water, the chips inside may be damaged. If your key fob isn't able to work, you can try cleaning the chip using isopropyl or an electronic cleaner. If seat key are paired but the receiver module has developed a fault you can try restarting all of the electronics on board by disconnecting the battery at 12 volts for a short period of time. Connect the battery in reverse (negative cable to positive first). This will reset the on-board electronic circuits and restore their functionality. Electronic Chip Faulty The key fob has an electronic chip which transmits a signal the receiver module whenever the key is used. If the signal doesn't match that stored by the car the immobilizer will stop the engine and prevent the vehicle from beginning. If the key fob won't function and you are not able to reprogram it, this could be due to a malfunctioning microchip. The chip inside the key fob may have to be changed in order to make it function properly. This can be done by taking the key fob out of its case, and using pins or needles to touch each metal clip. You'll have to replace them if they are damaged or corroded. Make sure that the replacement batteries are of the same size, voltage and specifications as the original. Seat Alhambra is a popular and well-designed model, could be a bit troublesome with certain parts or components. For instance there have been reports of owners experiencing issues with the auto climate control system, which may malfunction and cause problems in a specific setting. The infotainment system could also malfunction and freeze the screens.