How to Reset a Skoda Key
I just received a message from my infotainment system to say that the battery in the key is low and must be replaced. This isn't the first time, and the last time I visited an auto shop, they replaced it for free in 2 minutes, and they said it would work again.
Switch the ignition ON and lock the vehicle mechanically. Press the unlock button on the remote control five times in 1 second intervals. A short horn will sound.
EEPROM Method
It can take some time for a professional locksmith to reprogram your keys if it stops working. In many cases, the EEPROM is scanned to determine the unique code of the car. This is a risky procedure, as there's a good possibility that the information stored in the module will be corrupted. It is best to leave this to a skilled locksmith.
An EEPROM is an in-built memory that is non-volatile and can be found in a variety of electronic devices, including keys for cars. It stores data, including the unique encryption keys or authentication codes that are recognized by your car when you use the key to unlock or start it. These codes are crucial because they let the car know that you have the correct key and are authorised to drive it.
If your EEPROM is damaged, the keys will not work. The issue is usually caused by using the incorrect key, or accidentally hitting one of the buttons. It is possible to reset the key with an instrument that is specifically designed for this purpose. However this method might not work. It is best to work with an expert who has extensive knowledge of programming keys for automobiles.
To reset your EEPROM you must first remove the Kessy module from the vehicle. It's located just above the accelerator pedal located on the left side of the car. Take off the plastic clip that is holding it in place using the screwdriver. After that, you can unplug the two connectors to electrical power and pull it out of the vehicle. Then, you can read the EEPROM data with an micro pincer or SOIC8 clip connected to an electronic programmer. Once you have all the data, you can save the file and then write it back into the EEPROM.
You can use a program such as PonyProg to read the EEPROM data. Click on Read Device. The EEPROM dump appears as a hexadecimal array of characters. Three hex values stand out: the key_code (key_code), the key_count (key_count) and the V_ARG_ENABLED. To "virginize" the chip, change the other hex values to the number 00. Once you have done this, you can flash the chip and restore its functionality.
Ignition Method
This method involves using another key to turn on the car's system. It isn't applicable to all vehicles, but it is possible to reset the key fob in case it's not functioning properly or the battery is dead. It should work if you have pressed the buttons with force (people often try to push the unlock button repeatedly).
To apply this method, turn on the ignition and turn it off. Then, lock the car's drivers door by using a different key. Then, put the key fob in the lock position and point it towards the transmitter on the front of the car, just above the mirror. Press and hold the unlock button for a few seconds. The horn will sound, and the key fob will begin to function.
If the skoda keys don't work it could be because the transmitter inside has been damaged or is not in sync with the vehicle's theft-deterrent system. If this is the situation, it needs to be reprogrammed. This can be accomplished by an expert or an automotive locksmith.
If the key fob doesn't work after reprogramming, it could be that the car "forgot" the key if the car was not used for six months. You can attempt the resync process in the user's guide - remove the cap and lock on the driver's side door, then unlock the car with the key. It should re sync the key, if not then you'll need to visit the dealers. This is usually done on keys that have lost their functionality, and it takes less than 2 minutes to complete.
Keyless Entry Method
The new generation of keyless systems which are present in modern OCTAVIA cars and electric ENYAQ-iV vehicles, comes with an innovative security feature to prevent thieves from "signal expanding". The car sends an alarm and the key has to respond within a set time. If the key doesn't respond, the car cannot be unlocked and starts to sound alarms.
The car can also detect that the key is close by using a sensor in the door handle. The sensor sends an alert to the key's internal coil which in turn, responds by sending a signal to the sensor. If the sensor detects it then the car will open itself and turn on the interior lights automatically, if the key is programmed to do so.
Even older keyless entry systems have a backup. If the remote isn't working however, you can manually open the door to the driver. You can do this by sliding the blade out or, in certain models, by pressing a button in the pocket. This method is particularly helpful when the battery of your key is dying or you have lost it.
Remote Control Method
If you just bought a new remote control, but it doesn't function in your car, it's possible that the seller did not program it to work with your vehicle. It could also be that the battery terminals are loose (look for this, they may seem a bit loose the touch and may be soldered in place) - carefully soldering them back into place will return your key fob to full working order. If you are not comfortable with this kind repair, you should consult a professional auto elec technician.
Switch off the ignition and lock the vehicle from within with a second key that is not in the same position (this will reset memory position 1). Enter channel "01". (Can be channel "21" on some Audi models.) Insert the new keyfob into the driver's door and hit the unlock button twice in less than 5 seconds.
Repeat this coding process for up to 4 additional remotes - make sure to shut off the ignition between programming each remote. You should hear a sound every time you successfully program the remote.