Hi @Rokebo73 The EMP ability was removed with the update yesterday.
"It has always been our aim to encourage and empower vehicles so that they feel able to engage with objectives and be alongside their fellow infantry team mates as such with this update we are aiming to lessen the amount of threats towards ground vehicles in order to give them breathing room, while also ensuring that infantry are capable of engaging too.
To achieve this, we are increasing the time before a vehicle can be hacked, and we are also removing the EMP functionality from Casper’s OV-P Recon Drone, going forward this will now be focused more towards spotting infantry and vehicles"
https://www.ea.com/en-gb/games/battlefield/battlefield-2042/news/battlefield-2042-update-notes-7-0-0