I'm not familiar with using the buttons to lock and unlock.
I always use my remote so the alarm arms and disarms.
But I use the key pad to unlock and lock when I don't have my key with me.
After pressing the last code the door automatically unlocks and disarms the alarm.
But will not set the alarm if trying to lock with the keypad.
Now I have a 2010 1/2, it could be since I don't have a push button start (smart key fob),
just walking up to the truck and hitting one button is a feature not available to me.
Makes cense and changes my statement on my earlier post.
And at closer look at the buttons only button 5-6 is super clean.
So that's still a lot of combos with four buttons to play with.
I will also add, it's a good thing I'm **** with cleaning my hands before touching my truck.
I'm a crane operator I have grease and diesel fuel on my hands everyday and
I did notice 10 years ago that I was starting to fade the red tab on the steering wheel.
I have condition myself to clean clean clean my hands. LOL