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There are many reasons why 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 needed to get it back in working order.

Water Damage

If your seat keys alhambra key fob is able to withstand the wash cycle or a bath in the pool or ocean then it's probably equipped with an incredible waterproof chip, but don't make this a habit because exposure to water in excess increases the chance of the key fob becoming damaged. If your key fob stops functioning after exposure to rain or clean tap water, unplug the battery and wipe the electronic component with a towel. Dry it completely before replacing the battery. If the key fob was exposed to salty or soapy water and salty water, it is recommended you clean the chip using isopropyl or an electronic cleaner.

Faulty Receiver Module

If the key fob will not lock or unlock after you have replaced the battery in the button cell It is possible that the receiver module is suffering from an issue. The positive side is that this is a relatively simple and cost-effective fix. You can just disconnect the 12 volt battery for a few minutes (first take off the negative cable, then press the horn button numerous times) to eliminate any remaining electric current, then reconnect it in reverse order e.g. positive cable first then negative.

ESP Warning Light – If the ESP symbol blinks, it is normal. It indicates that you are driving on a terrain with poor traction. This could be due to gravel, snow or surface water. If the ESP warning light is constantly illuminated it indicates that there is a glitch in the system. It should be detected with a iCarsoft i908 seat key fob replacement OBD Code Reader kit that will give you a specific fault description.

Dead Coin Battery

A dead coin battery is among the most common causes for the keys for the seat leon key fob programming to cease to function. The key fob has a tiny button cell battery that is able to keep it powered. Replace it with a new battery that is the same voltage, size and specification as the original. If you're replacing the battery be sure to remove all metal retaining clips from the back of the key fob. Also make sure that the contacts are free of corrosion.

If the key fob was exposed to water, like soapy or rain it is recommended to remove the battery and clean the electronic chip using alcohol or an electronic cleaner prior to putting in the new battery. The chip is sensitive to moisture and may be permanently damaged. If the key fob is still not working after replacing the battery, it might be necessary to replace the entire key fob.

Faulty Receiver Module

If your key fob stopped working after you replaced the battery but it did not help, or if it stopped working completely suddenly The receiver module may have developed an issue. The receiver module is responsible for receiving the radio frequency signals that are sent by the remote key fob and changing them into electrical signals which are then processed by other modules within the car.

If the receiver module is damaged and is not able to take any commands from your remote key fob. In this situation the dealer will have to reprogramme your key fob as well as install the new receiver.

The key fob comes with rubber seals that prevent water from getting into the electronic chip inside. If you submerge the key fob into salty or soapy water it could damage the chip. You can attempt to clean the chip by rub it with isopropyl alcohol or electronic cleaner, but should your key fob doesn't work after doing this, then you'll need to purchase a new one.

If the keys have been paired, but the receiver module is not working then you can restart all the electronics that are on board by disconnecting the battery at 12 volts for couple of minutes. Connect the battery in reverse (negative cable to positive first). This will reset the on-board electronic circuit and restore their functionality.

Electronic Chip Faulty

The key fob contains tiny electronic chips which transmits a signal the receiver module each time the key is used. If this signal does not coincide with the one stored by the car, the immobilizer will disable the engine and stop the vehicle from beginning. If the key fob doesn't function and you are not able to reprogram it, it could be because of an issue with the microchip.

The chip inside the key fob could need to be changed to make it work again. The best method to do this is by removing the key from its housing and then using a pin or needle to get into contact with each of the clips made of metal. If these are corroded or broken, you will have to replace them in order for the remote control to work. Make sure that the replacement batteries are the same voltage, size and specification as the original one.

Seat Alhambra, a renowned and well-designed model, may have issues with certain parts or equipment. For instance there are owners who have had issues with the automatic climate control system, which can be faulty and get stuck in a particular setting. The infotainment system could also malfunction and cause freezes on the screens.