Guild Wars 2

Does the LFG tool teleport you to the dungeon?

if your in the same map as the dungeon a message will pop up asking you to join if not then u have to waypoint into the map to get the join message. joining a dungeon group don’t teleport you to the dungeon no

Nope.
EDIT: The mechanic Shalloe mentioned is from the party itself, not from the LFG tool.
If you join a party and someone is inside a dungeon and you are in the same map, the message asking to join you’ll appear.