How to Reset a Skoda Key

I just received a notification that my infotainment unit is low on battery and has to be replaced. This isn't the first time, and last time I went to a dealer they just replaced it at no cost, took 2 minutes and told me it would work again.

skoda key replacement The Key Lab 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

It could take some time for a professional locksmith to reprogram your keys if it stops working. In most cases, this involves reading the EEPROM to find the unique code that is specific to the vehicle. This is a risky process, and there's a good possibility of destroying the data within the module. This is why it's better to leave it to an expert locksmith.

An EEPROM (non-volatile) memory is used in a wide variety of electronic devices, including car keys. It is a storage device that stores the unique authentication codes and encryption keys that your vehicle recognizes when you use it to unlock or start the car. These codes are vital because they notify your car that you are the owner of the key and that you have the right to drive.

If your EEPROM is damaged, the keys will stop working. The problem can be caused by pressing the wrong button or accidentally hitting the wrong key. It is possible to reset the key by using a special tool. However this method might not work. It's better to use a professional who has extensive knowledge of programming automotive keys.

To reset your EEPROM you must first remove the Kessy module from the vehicle. This is the module located just above the accelerator pedal on the left side of the vehicle. Utilizing a screwdriver to remove the single plastic clip holding it in place. Then, you can unplug the two connectors to electrical power and remove it from the vehicle. Then you can access the EEPROM data using a SOIC8 clip or micro pincers connected to the 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 appears as a hexadecimal array of characters. Three hex numbers are noteworthy for the KEY_CODE (key_code), the key_count (key_count) and the V_ARG_ENABLED. It is necessary to change all other hex values to 00 to "virginize" the chip. Once you've completed this, you can flash the chip to restore its functionality.

Ignition Method

This method uses an additional key that works to activate the car's system. It's not applicable to all vehicles however it will be able to reset the key fob if it's not functioning properly or the battery is dying. It should work if have pressed the buttons hard (people often push the unlock button repeatedly).


This method requires that you turn on the ignition and keep it on. Next make sure that the driver's door is locked of the car using another key. Then, turn the key fob back to its lock position, and aim it at the receiver for transmission located on the front of the car above the mirror. Hold the unlock button for a few minutes. The horn will sound and the key fob should begin to work.

If the skoda keys don't work, it could be that the transmitter inside is corrupted or out of alignment with the vehicle's security system. If this is the case, the key will need to be reprogrammed. A locksmith or technician can assist you in this.

If the key fob doesn't seem to be working after reprogramming, it may be that the car has "forgotten" the key (if the vehicle hasn't used in 6m). You can try the resync procedure in the user guide take off the cap and lock on the driver's side of the door. Then unlock the car with the key. It should be able to re-synchronize the key, if not, you'll need to visit the dealer. This normally works on keys that have lost their functionality, and it takes less than two minutes to do.

Keyless Entry Method

The latest generation of keyless entry systems - the type that is used in modern OCTAVIA and electric ENYAQ iV cars - features an ingenious security feature that blocks thieves from "signal extension". A signal is sent to the car and then to the key, which is required to reply within a specific time. If the key doesn't respond, the vehicle will not be locked and will ring its alarms.

The car can also detect the key is near by by using a sensor in the door handle. It transmits an electrical signal to the internal coil of the key, which sends a signal back to the sensor. If the sensor detects this, the car will unlock itself and may switch on the interior lights if set to do so.

Even older keyless entry systems come with a backup. If the remote isn't working it is still possible to manually open the driver door. This can be done by sliding the blade out or, in some models, by pressing a button in the pocket. This is particularly useful when you've lost your keys or if the battery has gone out.

Remote Control Method

If you've just purchased a new remote control, however, it isn't working in your car, it's likely that the seller didn't program it to work with your vehicle. It could also be because the battery terminals are loose (look for this, they might seem a bit loose the touch and may be soldered in the wrong place) - carefully soldering them back in place will return your key fob to its original working condition. If you're unsure about this kind of repair, consult a professional auto elect technician.

Switch off the ignition and lock the car from inside by using a second, unmatched key (this resets memory position 1). Enter channel "01". (Can be channel "21" on some Audi models.) Insert the new key fob into the door of the driver and then press the unlock button twice within 5 minutes (often enough to reach the next available memory position).

Repeat this coding procedure for up to four 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.