MW4 DMZ Bank Vault Guide: All Four Locations and How to Open Them

Bank vaults are among the more rewarding objectives to pursue in MW4 DMZ. A successful heist can put a substantial amount of cash and other high-value loot into an operator's pack, making the danger worthwhile for squads that can survive the trip out. Cash is especially useful because it can be extracted and spent through the Vendor before a later deployment, where it helps fund weapons and gear that may otherwise be difficult to replace.

The catch is that DMZ's bank vaults are not simple locked doors. Opening one requires a short chain of tasks involving a car battery, a bank keycard, and a partial vault combination. Most of the required pieces are close to the bank, but the item that powers the system can force players to travel, improvise, or abandon the attempt if they arrive unprepared. Meanwhile, hostile forces can turn what sounds like a quick robbery into a prolonged firefight.

There are four bank vault locations on the MW4 DMZ map. Three are relatively manageable branch banks, while the fourth sits in a far more hazardous region. Here is where to find each bank, how the vault-opening sequence works, and how to give a heist a better chance of ending in a profitable exfiltration.

All MW4 DMZ bank vault locations

MW4 DMZ contains four bank vaults in total. Their locations are spread across several named areas of the map:

For useful background on this topic, read NieR: Automata Steam Storage Bug Fixed After Update Swelled Game to 366GB.

• North of Songdo Wharf: This is the eastern bank branch and is a sensible first target for players learning the process.
• South of Wolves Stadium: Another smaller branch bank, with its power cabinet positioned behind the desk.
• Inside The Grid: This is the main bank tower and the most dangerous vault destination.
• Cheongun Village: A further branch-bank location away from The Grid.

The branches outside The Grid are generally the better options for a first attempt. They are smaller and easier to navigate, and they do not carry the same extreme-threat pressure as the major bank building within The Grid. That distinction matters because opening a vault takes time: players need to locate items, activate the bank's power setup, access the card-reader door, and enter a combination while defending against enemies.

Of the smaller branches, the bank north of Songdo Wharf is particularly practical as an introduction to vault raiding. It benefits from nearby gas stations, which improves the odds of locating the one component that is not guaranteed to be sitting inside the bank itself: the car battery.

What you need before opening a vault

Every bank vault requires the same three elements. Do not expect to walk in with only a keycard and immediately reach the money; the sequence will not begin until the power equipment is active.

1. A car battery to restore power to the bank's card-reader system.
2. A bank keycard to open the door controlled by the reader.
3. A vault code note that provides the first three digits of the combination.

The keycard and the note are consistently found within the bank. This means that once players are inside, the search should be focused and methodical. Check the building thoroughly rather than assuming either item is outside or hidden at a distant point of interest. The card is readily identifiable, while the combination information is written on a piece of paper.

The battery is the complication. It can be found only in gas station stores, and a gas station does not always have one available. A bank can therefore contain its card and its note yet still be impossible to fully access during that visit if no battery turns up nearby. Players should make the battery search the first priority if they did not bring one into the match.

How to open an MW4 DMZ bank vault

Once all three items have been collected, the vault can be opened in a specific order. Skipping ahead will leave the relevant door inactive or inaccessible, so it is worth coordinating the steps with a squad before interacting with anything.

1. Find the empty power cabinet. Each bank has a power box that needs the battery. At the Wolves Stadium branch, for example, it is behind the desk.
2. Insert the car battery. This powers the bank's system and enables the next stage.
3. Go to the card-reader door. Use the bank keycard on the reader to gain access beyond that locked door.
4. Enter the vault combination. The note supplies the first three numbers, but not the complete code.
5. Test the final digit. The missing number is always the fourth and last digit, so players only need to try the possible final-number options rather than guess the entire combination.

That final detail greatly reduces the amount of trial and error involved. Treat the note as a three-digit prefix, then work through the remaining possibilities for the final slot. There is no need to rearrange the digits provided on the paper or search for a second note with a complete code.

Although the process is straightforward once understood, it creates several vulnerable moments. Inserting the battery, moving between rooms, and testing the lock all give enemies time to pressure the team. One player can work the objective while teammates watch entrances, clear nearby hostiles, and stay ready to respond if the group is attacked from more than one direction.

Where to get a car battery

Car batteries are found in gas station stores. They are not guaranteed spawns, so planning around multiple possible stops is much safer than counting on the first station beside a bank. This is one reason the Songdo Wharf-area branch is a good early target. While a gas station is positioned right next to that smaller bank, failure to find a battery there does not automatically end the run: there are three gas stations near the eastern branch.

That nearby concentration gives a squad more chances to search without needing to cross a large section of the map. Still, players should be prepared for the possibility that a battery simply will not appear where they expect it. If the closest store comes up empty, check the other nearby stations before deciding whether the bank is worth delaying for.

A useful long-term habit is to collect batteries whenever passing a gas station, even during a run with no immediate plan to raid a bank. A battery can be extracted and brought into a new match later. Carrying one into a deployment specifically intended for a heist removes the least reliable part of the vault setup and lets the squad concentrate on getting the keycard and code from the bank itself.

The Grid bank requires heavier preparation

The bank inside The Grid is a different kind of operation from the outlying branches. The Grid is an extreme-threat area, and the main bank tower is expected to demand much more combat readiness. Players heading there should not treat it as a casual loot stop, particularly when the vault procedure can attract or coincide with enemy pressure.

Bring the strongest MW4 weapons available for the extraction mode, along with a solid armor vest and at least one medkit. The goal is not merely to open the vault; it is to survive the engagements that occur during the attempt and then successfully extract with the rewards. A powerful weapon setup, healing supplies, and armor all become more important when the surroundings are as hostile as The Grid.

For less experienced operators, there is little reason to make The Grid the first bank target. Learn the item spawns and activation order at a branch bank first. Once the team knows what the power cabinet looks like, how the keycard door fits into the route, and how to handle the incomplete code, the larger high-threat bank becomes a more realistic objective.

Tips for a cleaner bank heist

• Bring a battery when possible: Extracting one from an earlier gas-station search can save considerable time in a future match.
• Search the bank carefully: The keycard and code note are inside, so avoid leaving before checking the building thoroughly.
• Use branch banks to learn the loop: The locations outside The Grid are less punishing than the main tower.
• Assign roles in a squad: Have one player handle the cabinet, card reader, and code while others cover likely approaches.
• Expect combat before the vault opens: Eliminate enemies as they appear instead of allowing them to build pressure around the objective.
• Do not overthink the code: Only the final digit is absent, making the lock a limited process-of-elimination problem.

Bank vaults reward preparation more than blind luck. The core route is always the same: find power, activate it, use the card, then complete the combination. The variable is whether a battery can be secured quickly and whether the team can maintain control of the bank while working through the steps. Start at the smaller branches, keep an eye on gas stations during ordinary deployments, and save the trip into The Grid for when the squad is equipped to handle an extreme-threat heist.