How to access MW4 DMZ bank vaults

MW4 DMZ bank vaults contain cash and valuable loot that can help players buy weapons and gear from the Vendor for later missions. Opening one requires finding specific items, and the process can draw enemy attacks, making preparation especially important at the high-threat bank in The Grid.

There are four vaults: north of Songdo Wharf, south of Wolves Stadium, inside The Grid and in Cheongun Village. Players need a car battery, a keycard and a note with the first three digits of the code; the final digit can be worked out by elimination. Keycards and notes are found in banks, while batteries are found in gas station stores, where availability is not guaranteed. Players can also carry a battery into a later match.