Hey Siri only not working for Apple Maps when locked

I have Siri set with full access and it works with all other apps and functions when the phone is locked but not with maps. At first it was intermittent however recently it always comes back with “you have to unlock your iPhone first”. I use Apple Maps for work constantly and need the hands free functionality.

I have tried all the help suggestions on this forum as well as many online nothing works. things I have tried / do regularly

• resetting Siri settings at least once a month

• restarting phone weekly

•changing the wording used with Siri