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10 Seat Keys Replacement-Related Projects To Stretch Your Creativity
Seat Alhambra Key Problems

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There are a myriad of reasons that the key fob could not function properly, such as a dead coin battery or water damage, receiver module issues or signal interference. This article will walk you through the steps to get it working.

Water Damage

If your key fob for the seat Alhambra is able to withstand an wash cycle, a dip in the ocean or in a pool, then it has a waterproof chip. But, you shouldn't do this often, as prolonged exposure to water can increase the chance of the key fob getting damaged. If your key fob ceases to working after exposure to rain or clean tap water, take out the battery and clean the electronic component using a paper towel. Dry it completely before replacing the battery. If the key fob has been exposed to salty or soapy water, it is recommended that you clean the chip with isopropyl or electronic cleaner.

Faulty Receiver Module

If you've tried a new button cell battery and the key fob still does not lock or unlock, it's likely that the receiver module has found a fault. The good thing is that this is a relatively simple and cost-effective fix. You can simply disconnect the battery for several minutes (first take off the negative cable, then press the horn button a few times) to drain any residual electric current, 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 car is travelling over terrain where the traction between the road surface and tyres isn't ideal, such as gravel, snow or a lot of surface water. If the ESP warning light is constantly shining, it is a sign that there is an error within the system. This can be detected using an iCarsoft i908 Seat OBD Code Reader kit that will provide you with a specific fault description.

Dead Coin Battery

A dead battery for the coin is one of the most common causes for the seat alhambra keys to cease to function. The key fob has an insignificant button cell battery that is able to keep it powered. Replace it with a brand new battery that has 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 and make sure that the contact points are clean and free of corrosion.

If the key fob was exposed to water (such as soapy tap water) it is recommended that you remove and clean the chip using an electronic cleaner or isopropylethanol before installing a brand new battery. The chip can be permanently damaged by water. If the key fob still doesn't function after replacing the battery, it could be necessary to replace the key fob.

Faulty Receiver Module

If your key fob stopped functioning after replacing the battery, but it did not work, or suddenly stopped working, your receiver module could be experiencing a problem. The receiver module is responsible to receive the radio frequency signals transmitted by the remote key fob and transform them into electrical commands that are then used by other modules within the car.

If the receiver module has developed a fault and is unable to respond to any of the commands received by your remote key fob. In this situation, a dealer will need to reprogramme the key fob, and also install an entirely new receiver.

The key fob has been sealed with rubber to stop water from getting into the electronic chip. If you dip the key fob in salted or soapy water it could cause damage to the chip. It is possible to clean the chip by using isopropyl Alcohol to rub it or electronic cleaner, however in the event that your key fob isn't working after all this, you'll have to buy a new one.

If the keys are connected but the receiver module has developed a fault you can try to reboot all the on-board electronics by disconnecting the 12 volt battery for a short period of time. Connect the battery in reverse (negative cable to positive first). This will reset the onboard electronic circuits and restore their functionality.


Electronic Chip Faulty

The key fob is fitted with a tiny chip which transmits the signal from the key to the receiver module every time the key is used. If G28CarKeys does not coincide with the one stored by the car the immobilizer will stop the engine and prevent the vehicle from beginning. If the key fob you purchased does not work and you aren't able to reprogram it, this could be because of a faulty microchip.

The chip inside the key fob may have to be replaced to make it work again. This can be done by getting the key fob removed from its housing, and using pins or needles to connect with each metal retaining clip. If the clips are corroded, or broken, you will require replacement to allow the remote control to work. Make sure the replacement batteries are of the same voltage, size and specifications as the original.

Seat Alhambra, a popular and well-designed model, may be a bit troublesome with specific parts or equipment. There have been reports of problems with the automatic climate-control system. It can fail and cause problems, and then get stuck in a specific setting. Similarly, the infotainment system has also been reported to malfunction and freeze screens.

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