2. Replace the batteries. The correct position of the batteries is indicated on the bottom of the slots.
3. Place the key cover on the guides and push it in until it stops.
Note: Only batteries with markings stamped on the remote control housing are allowed for use.
Entering the key code (emitter) to the control unit
The key code is entered into the central lock control unit at the factory. There is no need to enter the code later and this procedure is an exception.
The need to enter a code may be caused by repair of the central lock or replacement of keys. The memory device of the central lock control unit has enough space to enter the code of four keys per car.
The procedure for entering the code is as follows.
1. Insert any of the keys into the ignition switch and turn on the ignition.
2. Lock the car with the second key by inserting it into the lock on the driver's or passenger's door. Then remove the key from the door lock. It is advisable to lock the car with the key whose code will be entered.
3. Press the transmitter button briefly 1-4 times, holding the key, the code of which will be entered into the memory of the central locking control unit, in front of the sensor (receiver) infrared signal. To enter the first digit of the code, press the remote control button once. The second digit is entered by pressing the button twice. Sending pulses should occur no more than once per second. Each pulse is confirmed by an acoustic signal from the anti-theft system. Sending four pulses must be completed within five seconds.
4. Press the remote control button again, waiting 5 seconds after sending the last signal to the central locking control unit. The locked car locks should unlock, meaning that the code entry process is complete.
The procedure for entering a new code into the memory of the central locking control unit must be completed within 30 seconds of locking the car with the key whose code is entered into the memory. Otherwise, the procedure must be repeated.
Attention! The above procedure for entering the code must be performed for each key. If, for example, only one key has been replaced, but it is not known where its code is located, which needs to be replaced, then the codes of all keys must be entered into memory.
[The original publication in its entirety is posted on the website AudiManual.ru]