For newer Aixam models:
1. Turn the key:
- Quickly turn the key five times.
2. Check for indicator signal:
- The turn signals should blink.
3. Press the lock button:
- Within 10 seconds, press the lock button on the old key, then press the lock button on your new remote.
4. Done:
- The process is complete.
To pair/program the remote control for older Aixam models:
- Follow the same process as for newer models, as it often works. 
For spare parts for your Aixam microcar, visit: https://minicarspares.com/collections/aixam