Why Seat Keys Replacement Is A Lot More Dangerous Than You Realized
Seat Alhambra Key Problems
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There are a myriad of reasons that the key fob may not function properly including dead coin battery or water damage, receiver module problems or signal interference. This article will guide you through the steps necessary to get it working.
Water Damage
If your seat alhambra key fob is able to withstand washing cycles or a bath in the pool or ocean then it probably has an amazing waterproof chip but do not make it a habit because exposure to water in excess increases the chance of the key fob being damaged. If your key fob ceases to functioning after being exposed to rain or clean tap water, take out the battery and wipe the electronic component using a paper towel. Allow it to dry completely before replacing the battery. In case of exposure to salt or soapy water it is recommended to clean the chip with alcohol, isopropyl or electronic cleaner prior to attempting to insert the battery back in.
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If you have tried a new battery for a button and the key fob still isn't locked or unlocking, it's likely that your receiver module has developed a fault. The good news is that this is a simple and affordable fix, you can simply disconnect the battery for about a couple of minutes (first take off the negative cable, then press the horn button multiple 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 flashes, this is normal. It means that you are driving on a terrain with poor traction. This could be due to snow, gravel or surface water. If the ESP light is constantly flashing, it is a sign there is a problem in the system. It can be detected by using an iCarsoft i908 seat OBD code reader kit. It will give you a detailed fault description.
Dead Coin Battery
One of the most frequent reasons for the seat alhambra key not working is a dead battery. The key fob is powered by a small button cell battery that is able to keep it powered. It should be replaced with a brand new one with identical in size, voltage, and specification as the original. When replacing the battery on the key fob, remove all metal clips and ensure that the contacts on the key fob are clean and free of corrosion.
If the key fob was exposed to water (such as rain or soapy tap water) it is recommended to remove and clean the chip with an electronic cleaner or isopropylethanol prior to installing a new battery. The chip is sensitive to moisture and could be permanently damaged. If the key fob still not working after replacing the battery, it may be necessary to replace the entire key fob.
Faulty Receiver Module
If your key fob stopped working after replacing the battery but it didn't perform, or stopped working in a sudden manner, your receiver module could be experiencing a problem. The receiver module takes the radio frequency signals from your remote keyfob, and converts them into electrical commands that are then processed by other modules in the car.
If the receiver module has suffered a malfunction and is unable to respond to any of the commands transmitted by your remote key fob. In this scenario, you will need to go to a dealer for reprogramming of your key fob and a new receiver module.
The key fob is covered with rubber to keep water from getting into the electronic chip. If you immerse the key fob in the ocean's salty or soapy water, the chip inside could be damaged. It is possible to clean the chip by using isopropyl Alcohol to rub it or electronic cleaner, however If your key fob does not work after this, you'll have to buy a new one.
If the keys are in a pair but the receiver module has developed a fault, you can try to reboot all of the electronics on board by disconnecting the battery that is 12 volts for a few minutes. Then, reconnect the battery in reverse order (negative cable first, then positive). This will reset the onboard electronic and restore their functionality.
Faulty Electronic Chip
The key fob contains tiny electronic chips that sends a signal to the receiver module whenever the key is used. If the signal doesn't match the one that the car has stored, the immobilizer will disable and prevent the vehicle starting. If the key fob does not function and you are not able to reprogram it, it could be due to a faulty microchip.
The chip inside the key fob is not a permanent part of the device and may need to be replaced to get it working again. The most effective method for doing this is to remove the key from its housing and then using a pin needle to get into contact with each of the metal retaining clips. You will have to replace them in the event of damage or corrosion-prone. Make sure any replacement batteries have the same size, voltage and specifications as the original.
Seat Alhambra is a well-known and well-designed model, could have problems with specific parts or equipment. For instance, some owners have experienced issues with the automatic climate control system, which may become faulty and stuck in a particular setting. The infotainment system has also been reported to malfunction and freeze screens.