How to Reset a Skoda Key
Just received a notification from my infotainment system say the key battery is low and needs replacing. This isn't the first time, and when I last visited an dealer, they replaced it at no cost, took 2 mins and said it would be working again.
Switch on the ignition and lock the vehicle mechanically. Press unlock button on remote control five times in 1 second intervals. A short horn tone will sound.
Method of EEPROM
It could take some time for a professional locksmith to reprogram your key in the event that it stops working. In many cases, this means reading the EEPROM to find the unique code for that specific vehicle. This is a risky process, and there's a good chance of corrupting the information in the module. This is the reason it's best to leave it to an experienced locksmith.
An EEPROM is an in-built memory that is non-volatile and can be found in a variety of electronic devices, such as keys for cars. It stores data, including the unique encryption keys or authentication codes that are recognised by your car when you use the key to unlock or start it. These codes are vital because they notify the car that you have the correct key and are authorised to drive it.
If your EEPROM is corrupted, the keys will cease to function. The problem is caused by pressing the wrong key or accidentally hitting the wrong key. It is possible to reset the key using an appropriate tool. However this method might not work. It is better to work with a professional who has extensive experience in programming automotive keys.
To reset your EEPROM, you must remove the Kessy Module from the vehicle. This is the module that sits just above the accelerator pedal on the left-hand side of the vehicle. Take off the plastic clip that is holding it in place using the help of a screwdriver. Then, skoda keys locked in car can disconnect the two connectors to electrical power and remove it from the vehicle. Then, you can access the EEPROM with a SOIC8 or micro pincers that are connected to a programmer. Once you have the data, you can save it as a file and then write it back into the EEPROM.
You can utilize a program like PonyProg to read the EEPROM data. Click on Read Device. The EEPROM dump will show up as a series of hex characters. There are three Hex values that are the KEY_CODE, key_count and the V_ARG_ENABLED. You must change all the other Hex values to 00 to "virginize" the chip. Once you do this, you can flash the chip and restore its functionality.
Ignition Method
This method involves activating the car's system using another key. It does not work on all cars however it is possible to reset the key fob if it isn't working properly or the battery is dying. It is also possible to reset the key fob in the event that the buttons are hit hard (a common cause of this is people trying to press down the unlock button multiple times).
This method requires you to turn the ignition on and keep it turned on. Then, lock the car's drivers door using a different key. Then, rotate the key fob to its lock position and point it at the receiver for transmission located in the front of the car above the mirror. Press and hold the unlock button for a couple of seconds. The horn will sound, and the key fob should begin to function.
If the skoda keys don't work, it could be that the transmitter inside has been damaged or out of sync with the vehicle's theft deterrent system. This requires reprogramming. A locksmith or technician can assist you in this.
If the key fob is not working after reprogramming it, this could be because the car has "forgotten" the key (if the car hasn't been used for six months). It is still possible to try a resync procedure in the user manual - take off the driver's door lock cap and lock, then unlock the car with the key. If it does not work, you will need to visit the dealer. This is usually done on keys that have lost their function, and it takes less than two minutes to do.
Keyless Entry Method
The new generation of keyless entry systems - like the ones that are included in the latest OCTAVIA and ENYAQ iV vehicles - has an innovative security feature that prevents thieves from "signal extension". A signal is sent to the vehicle and then to the key, which must reply within a specific time. If the key does not respond then the car will not be unlocked. It will begin to ring alarms.
A sensor on the door's handle could also be used to inform the car that the key is nearby. It works by sending a signal to the key's internal coil, which in turn, responds by sending a signal to the sensor. If the sensor detects this, the car unlocks itself and can turn on the interior lights, if set to do so.
Even older keyless entry systems have a backup. If the remote doesn't work, you can open the door of the driver mechanically by slipping out the blade or, in certain models, by pushing down on a button within the door pocket. This is especially helpful if your key's battery dies or you have lost it.
Remote Control Method
If you've purchased an electronic remote control but it doesn't work in your car it could be because the seller didn't have programmed it correctly to your vehicle. It is possible that the battery terminals have become loose. They may appear loose and may be soldered in. Soldering them back into place should bring back your key fob's full function. If you're unsure about this kind of repair, contact an expert auto technician.
Switch off the ignition and secure the car from the inside by using another key that is not matched (this resets memory position 1). Enter channel "01". (Can be channel "21" on some Audi models.) Insert the new keyfob in the driver door and hit the unlock button twice in less than 5 seconds.
Repeat this procedure for up four additional remote controls. Make sure to turn off the ignition between programming each remote. You should hear a sound every time you successfully program the remote.