Where do I find keys in MW4 DMZ?

Keys turn up as loot while you search containers in Hajin, and Lieutenants can drop the key to their own loot room when killed. Each key’s description gives a grid cell that tells you which part of the map its door is in.

What do MW4 DMZ keys open?

Special loot rooms. The official example, a key from Lieutenant Warden, opened a sealed room under NuriGO Mall that held a plate carrier recipe, rare components and a weapon manual.

Is this about MW4 CD keys?

No. This page covers in-game DMZ keys that open loot rooms. It does not sell or link to game activation keys.

Are the old MW2 DMZ keys the same?

No. MW2 DMZ keys were for Al Mazrah (including the Koschei Complex), Ashika Island and Vondel. MW4 DMZ takes place on a new map, Hajin, so every key is new.

MW4 DMZ Keys: Hajin Map Key Locations

MW4 DMZ keys open special loot rooms across Hajin, and every key names a grid cell in its description. This database lists each in-game key with its grid, the door it opens and what is inside, one page per key.

No keys are public yet. DMZ early access opens on 20 October at 17:00 UTC; confirmed keys appear here from then on.

How MW4 DMZ keys work

Keys are loot items that unlock special rooms. Activision’s Hajin guide confirms three things. First, keys open special loot rooms. Second, all keys found in DMZ have a grid location in their description. Third, Lieutenants, the mid-tier bosses, can drop the key to their own personal loot room when you kill them.

The official “Gone to the Dogs” story shows what that looks like: a key taken from the Lieutenant Warden carried the stamped location of a sealed door under NuriGO Mall. The room held a high-value plate carrier recipe, rare components and a weapon manual, all worth extracting with because recipes and weapon manuals unlock permanently at your FOB.

The guide also hints at doors that are locked from the inside, which means there is another way in, and at underground entrances in the rural and wooded areas. Those are worth noting even when you do not have a key.

How to find a key’s location from its grid

Inspect the key in your backpack and read the grid cell in the description, for example D7.
Open the MW4 DMZ map and type the cell into the search box. The cell lights up and the map zooms to it.
Check which POI or named place sits in that cell, then look for buildings with locked doors there. Letters go west to east and numbers go north to south.
Once a key is confirmed it gets its own page here with the exact door, so you can skip the search.

What each key page will show

The key name exactly as the game shows it, plus the grid from the description.
The building and floor of the door, with a marker on the Hajin map.
What the room contained in our runs and in verified reports, and whether the key is one-use.
Where the key drops: loose loot, a container, or a named Lieutenant.
The date it was confirmed and the game update it was checked on, because seasons can move doors.

Report a key

Found a key room? Send it in. We check every report against footage or our own runs before it is published and credit you if you want.

Last checked 19 October 2026. Early access starts Tue, 20 Oct 2026 17:00 UTC. Looking for exfils and bosses? See the bosses page and Hajin locations.