I’m not sure Ford supports Siri access and from the link Mark S posted is the following which matches similar info I read mid 2023 which stated Siri was not welcome by Ford. Security reasons I recall.
02 December 2022 05:39 17
With a recent update to the Ford Pass security, the available shortcuts no longer work.
15 December 2022 04:59 16
Not only do they not work, but FordPass security is banning accounts that use them without warning.