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DOOM 3 Hints
How can I unlock the exit door at the service lift's Station 3?
1 of 11: Once you get the service lift going, use it to travel to Station 3.
2 of 11: Click on the exit door's panel to find out that it's locked from Security Station 01.
3 of 11: To get there, you're going to have to do a bit of fancy lift ridin'.
4 of 11: You need to use the lift to get up onto a high-up walkway that can lead to the security station. (You could instead use the little up-n-down lift in PRC Support Area 2 Level to go up to that walkway if only its lower-floor call panel weren't broken.)
5 of 11: There are two places where you can use the service lift's "elevator" to get up to the walkway you need.
6 of 11: One place is near the large multi-level platform that has the lower entrance to PRC Support Area 2 Level. Look up to see a walkway going across between two doors. Maneuver the lift so that it's almost directly under the walkway, then elevate it so that you can jump over the railing and onto the walkway. (Note that you may need to turn the lift so that you're not forced to try to jump over its control panel.)
7 of 11: The other place is at the T-intersection that's in the approximate center of the track between the three stations. One easy way to get to it is to return to Station 2 and then go straight forward (away from the station) as far as you can. Elevate the lift there to find a dim little niche platform with a door that leads to PRC Support Area 2 Level's upper floor.
8 of 11: Once you're up there, make your way through PRC Support Area 2 Level's upper floor (if you used the second option) to get to the walkway that you can get to using the first option. From there, go through the door that leads to yet another part of PRC Maintenance.
9 of 11: Exploring it, you'll find a nonfunctional elevator at one end and the security office you're after at the other end.
10 of 11: Enter the security office and click on "Open Locked" on the red panel to unlock the door at Station 3.
11 of 11: Now you can return to the lift, take it back to Station 3, and go through the door.
