How to change the key of the Audi Q3

To change the remote control key from the original one to the keyless one. In addition to the key, the packaging of the new key contains accessories for disassembly: the operation consists in removing the electronics from the old key and passing it to the new key. To open the old key we have to disassemble the battery compartment, with a plastic lever, levering from the underside of the key to remove the cover, with a small slotted screwdriver we lever from the bottom of the battery to remove it. After having removed the battery, let's unscrew the 3 screws in the battery compartment (2 t4 and 1 t6 torx); once the screws have been removed, it begins to open thanks to the spring of the small sword, slowly we raise the part of the key and remove it, we have arrived at the electronics. To remove the electronics with a fixed screwdriver, we pry the points where we can disassemble going to lift it slowly and unhooking the points with plastic tools. Once the electronics have been removed, we can put the key away. Now let's disassemble the new one where it is delivered with the back side (of the battery) open: we remove the key which we will then go to screen-print in the hardware store by putting the same screen-printing of the old key. With the small button we remove the lower part of the key, with a plastic wedge, we pry the cover where the keys of the key are to remove it, we also remove the sides, and we have to open the other part by inserting the plastic wedges in the appropriate holes. Now we can put the electronics in the new key in the shape made with the buttons, close the cover above, find the battery holder, put the battery, put the battery cover, put the key inside, reinsert the interlocking side profiles, we put the keys in the special frame that we are going to put on the key by interlocking it, we put the support for the sword, we close the battery compartment and where the sword is and as a last step we put the sticker with the company logo. We can reassemble the old key and keep it as a spare. Now we can try the new key and continue using the new key.