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Seat Alhambra Key Problems Seat's Jumbo MPV family is among the best in its class when it comes down to resale value. With G28 for sale, the family MPV jumbo is more impressive. There are a myriad of reasons the key fob may not work as expected, including a dead coin battery damage to the receiver module or signal interference. This article will walk you through the steps to fix it. Water Damage If your key fob for the seat alhambra withstands an wash cycle or dip in the water or a pool, it's equipped with a waterproof chip. But be careful not to do this often because prolonged exposure to water increases the likelihood that the key fob will be damaged. If your key fob ceases to functioning after exposure to rain or clean tap water, remove the battery and wipe the electronic component using a towel. Let it dry completely before replacing the battery. If the key fob has been exposed to soapy or salty water it is recommended that you clean the chip using isopropyl or an electronic cleaner. Faulty Receiver Module If the key fob does not lock or unlock after you've replaced the battery of the button it is possible that the receiver module has an issue. The good news is that it is a simple repair that is inexpensive, you can simply remove the battery 12 volts for a few minutes (first take off the negative cable then press the horn button numerous times) to remove any remaining electric current, then reconnect it in reverse order e.g. Positive cable first, then negative. ESP Warning Light – If the ESP warning light is flashing, this is normal and signifies that the car is driving over terrain where the traction of the road surface and the tyres aren't as good, like snow, gravel or a lot of surface water. If the ESP light is always on, it means that there is a fault in the system. It can be detected by using an iCarsoft i908 seat OBD code reader kit. It will give you an in-depth description of the fault. Dead Coin Battery A dead coin battery is one of the most common causes for the seat alhambra keys to cease to function. The key fob comes with tiny button cell batteries that keeps it running. It should be replaced by a new battery with the same size, voltage and specifications as the original. If you're replacing the battery be sure to remove all metal retaining clips from the back of the key fob and make sure that the contact points are clean and free of corrosion. If the key fob has been exposed to water, like rain or soapy water, it's recommended that you take the battery off and clean the electronic chip using alcohol isopropyl or an electronic cleaner before putting in the new battery. The chip could be permanently damaged by moisture. If the key fob still not working after replacing the battery, it could be necessary to replace the entire key fob. Faulty Receiver Module If your key fob has stopped working after replacing the battery but it didn't help, or if it just stopped working without notice, then your receiver module might have developed an issue. The receiver module is responsible to receive the radio frequency signals transmitted by your remote key fob, and converting them into electrical commands that are then acted on by other modules in the car. If the receiver module is damaged it will not be able to accept any commands from your remote key fob. In this situation you will require a dealer to reprogramme the key fob as well as install the new receiver. The key fob has been sealed by rubber to block water from leaking into the electronic chip. If you immerse your key fob in salty or soapy water, the chips inside may be damaged. If your key fob does not work, try cleaning the chip with isopropyl or electronic cleaner. If the keys are in a pair but the receiver module has developed a fault you may try to restart all the on-board electronics by disconnecting the 12 volt battery for a short period of time. Then reconnect the battery in reverse order (negative cable first followed by positive). This will reset all the electronic components on board and restore their functionality. Faulty Electronic Chip The key fob comes with a small chip that transmits a signal from the key to the receiver module every time the key is used. If the signal does not match the one the car has stored the immobilizer is disabled and prevent the vehicle starting. However, if the key fob isn't working, and you can't reprogram it the issue could be due to a defective chip. The chip in the key fob may have to be changed in order to get it working again. This can be accomplished by getting the key fob removed from its housing and using pins or needles to connect with each metal retaining clip. You'll require replacement in the event that they have been damaged or corrosion-prone. Make sure that any replacement batteries are of the same size, voltage, and specification as the original. The Seat Alhambra is a popular and well-designed car but, as with any car it can occasionally experience problems with specific parts or equipment. A few owners have reported issues with the climate control system that is automatic. It is prone to malfunction and be stuck in a certain setting. The infotainment system has also been known to malfunction and freeze screens.