The auto unlock, does not work for all doors, only for the driver’s. How can I repair this?
OK, if this really is a 2019 then if you mess with it you will void the warranty . And if it is a 2019 then that is what the warranty if for so use it .
Most vehicles require you to click the remote once for the driver door and a second click for the passenger doors, are you doing the second click? You can confirm the operation of your door locks in your owners manual.
That is one of the customizable features. If your vehicle has a navigation display or multi media display you can make the adjustment yourself with the instructions starting on page 681 of the owners manual. If your vehicle does not have a navigation or multi media display the adjustment will need to be performed by a dealer.
Changing the customizable settings will not void the vehicles warranty.
Did you read section 3-2 of your owner’s manual? Did that procedure not work?