This is a 2022 Nissan Altima, I'm going to program all keys lost using Autel MaxiIM KM100 by OBD.

IMMO >> Nissan >> Manual selection >> Middle east >> 2021/11-2022/10 >> Yes >> Hot function
1. Turn on the hazard warning light.
2. Open and close the driver door once.
3. Turn on the ignition. If the ignition cannot be turned on, press OK to continue.
Press OK.

Smart key learning >> Start
Execution of this function will erase all learned keys of the vehicle. Prepare all keys of the vehicle. At most 4 keys can be learned.
Do you want to continue? Yes

1. Turn off the ignition.
2. Turn on the hazard warning lamp.
3. Open and close the driver door once.

Add key: Place the original smart key against the ignition switch.
All keys lost: Place the smart key to be learned against the ignition switch.

Press the ignition switch once and within 5s place the smart key to learn with its back again the ignition switch so that the instrument cluster will automatically light up.

Autel KM100 Note:
If the security lamp on the instrument cluster does not go out, replace the key immediately with an original key, placing the original key against the ignition switch.
Turn off the ignition!
Program success, continue to program next one? Yes
Just repeat as before.

Press the start/stop button, and attach the first learned smart key on the start/stop button within 5s, and the instrument will automatically light up.
Turn off the ignition and wait for 3s!
Programming complete.

Check if the remote control is operating properly.
Start the engine and wait for 5s.
Both can work fine, done.

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