How to Reset a Skoda Key
Just received a notification from my infotainment device to inform me that the battery for my key is low and needs replacing. It's not the first time, and the last time I went to an auto dealer, they replaced it for free in 2 minutes and assured me that it would be working again.
Switch the ignition ON and secure the vehicle mechanically. Press the unlock button on the remote control five times in 1 second intervals. A short horn tone will be heard.
The EEPROM Method
When your car key stops working, it may take a while for a professional to reprogramme it. In many cases, this involves reading the EEPROM to locate the unique code for that specific vehicle. This is a risky process since there's a great chance that the data stored in the module could be corrupted. It's 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, such as keys for cars. It stores information that includes the unique authentication codes as well as encryption keys that your vehicle recognizes when you use it to unlock or start the car. These codes are crucial because they notify the car that you have the right key and that you are authorized to drive it.
If your EEPROM is damaged, the keys will not work. The problem is usually caused by using the incorrect key, or accidentally hitting one of the buttons. It is possible to reset the key with an appropriate tool. However this approach may not work. It is best to work with an expert who has extensive experience 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 side of the vehicle. Utilizing a screwdriver to remove the single plastic clip that holds it in place. Then, disconnect the electrical connectors. Remove it. Then, you can read the EEPROM data with an SOIC8 clip or micro pincers connected to an electronic programmer. Once you have the data you can save it as a file and write it back to the EEPROM.
You can make use of 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 distinct values in hex that are the KEY_CODE, key_count and the V_ARG_ENABLED. You need to change all other hex values to 00 to "virginize" the chip. Once you've completed this, you are able to flash the chip to restore its functionality.
Ignition Method
This method uses another key to activate the car's security system. It's not applicable to all cars but it is possible to reset the key fob if it's not functioning properly or the battery is dead. It should work if you have tried pressing the buttons repeatedly (people often try to push the unlock button repeatedly).
This method requires you to turn on the ignition and keep it turned on. Next make sure that the driver's door is locked of the car using a second key. Then, put the key fob in the lock position and point it to the transmission transmitter located on the front side of the car above mirror. Hold the unlock button down for several seconds. The horn will sound and the key fob will start working.
If the skoda keys fail to work it could be because the transmitter inside has been damaged or out of sync with the vehicle's theft-deterrent system. If this is the case, it will need to be reset. skoda replacement key or technician can help you with this.
If the key fob doesn't function after reprogramming it, it could be that the car "forgot" the key when the car was not used for six months. It is still possible to try the resync method described in the user's manual - remove the cap and lock on the driver's side door and unlock the car using the key. If it doesn't work, you will need to visit the dealer. This usually works on keys that are not working and takes less than two minutes.
Keyless Entry Method
The new generation of keyless entry systems - the ones that are included in the latest OCTAVIA and ENYAQ iV vehicles - has one ingenious safety feature that stops thieves from "signal extension". A signal is sent to the car and then to the key, which has to reply within a specific time. If the key does not respond then the car will not be locked. It will start to sound alarms.
The car can also tell that the key is nearby with a sensor located in the door handle. The sensor sends a signal to the key's internal coil, which in turn, responds by sending a signal to the sensor. If the sensor detects it, the car will unlock itself and turn on the interior lights automatically if configured to do that.
Even older keyless entry systems come with a backup. If the remote doesn't work it is still possible to manually open the driver door. You can do this by sliding the blade away or, in some models, by pressing a button in the pocket. This is particularly useful in the event that you've lost your key or the battery has died.
Remote Control Method
If you've recently purchased a remote control that isn't working in your vehicle the seller may not have programmed it to match your vehicle. It could be that the battery terminals are loose (look for this, they may feel a bit loose to the touch and may be soldered in the wrong place) It is important to carefully solder them back in place will bring your key fob back to full working order. If you're not confident with this kind repair, you should consult a professional auto technician.
Switch off the ignition and then lock the vehicle from the inside using the second key that's not compatible (this will reset the memory position 1). Enter channel "01". (Can be channel "21" on certain Audi models.) Insert the new key fob into the driver's door and press its unlock button twice in 5 minutes (often enough to reach the next available memory position).
Repeat this coding process for up to 4 additional remote controls. Make sure to switch off the ignition between programming each remote. You will hear a chime every time you successfully code the remote.