Call of Duty MW4 All Key Code Solutions for Every Mission

Call of Duty: Modern Warfare 4 is a first-person shooter from Infinity Ward, and its campaign spans 16 missions that mix tight linear levels with one wide-open battlefield. Along the way, locked doors, containers, and safes each ask for a numeric code.

The Call of Duty MW4 key code solutions cover 13 locks spread across only four missions. Most of them guard optional loot, contraband, or notes, which gives completionists a reason to track every digit down. Mission by mission, from the first toolbox to the final safe, each code arrives with its lock location and reward.

Summary of MW4 Key Code Solutions

• Call of Duty MW4 hides 13 key codes across four of its 16 missions, with the Stranded mission holding eight, Assassins three, Following Orders one, and Escape one.

• The Following Orders toolbox keeps its single code inside the village's first house, which makes it the first lock players meet.

• The Assassins door codes cover three keypads along the palace route, and all three doors must open before the mission moves forward.

• Stranded's open map spreads six shipping containers and two hidden bunkers across the battlefield, each tied to fixed coordinates and a clue.

• The Escape safe ends the hunt inside the detention center and holds dog tags for completionists.

• Most locks guard optional rewards such as contraband, notes, and Yellow Supply Caches, and a few of them feed trophy progress.

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How MW4 Key Codes Work Across the Campaign

Key codes appear in missions 3, 8, 10, and 13 only, so the other 12 missions skip the puzzle entirely. Locks range from a red toolbox and palace doors to shipping containers, bunker hatches, and a safe.

A correct entry opens the lock right away as the door, container, or safe lid gives way. Wrong digits trigger nothing, and several Stranded codes start with zeros that need entering in full, so a silent keypad usually points to a missed digit.

Stranded stands apart from the other three missions, since its locks carry map coordinates and clue notes. Locks in the other three missions sit along the main path with no map marker, so room-by-room directions work best there.

MW4 Following Orders Key Code Solution

Following Orders is mission 3, and its only keypad guards a red toolbox in the village's first house. The mission asks players to question a couple about a defector, and confiscated contraband gives leverage over them.

Reaching the toolbox and opening it takes only a few steps inside that first house.

• Players enter the village's first house and head into the room on the right: only one cabinet in that room opens, and it holds the red toolbox.

• Players check the left cupboard in the kitchen for the code note: the note shows the digits that fit the toolbox lock.

• Players type 214 on the red toolbox keypad: the lock opens right away.

Inside the toolbox sit a piece of medicine contraband and a second note. The couple only comply once at least two confiscated pieces land in the player's hands, so the medicine adds useful leverage.

The mission hides more contraband and notes elsewhere, and collecting all four contraband items and all four notes awards the No Stone Unturned trophy. The toolbox supplies one of each type toward that total.

MW4 Assassins Key Code Solutions

Assassins is mission 8, where players control the Supreme Leader of North Korea on a route through a palace and down to an underground bunker. Three keypads sit along that route, and each code works only on its own door.

The three doors appear in sequence, starting at the library and ending at the bunker.

All three doors block the main route, so a missed code stalls the mission until the right digits go in.

Enemies patrol the garden, and clearing them before the final keypad keeps the bunker entry smooth. Once that last keypad accepts its code, the route continues underground.

MW4 Stranded Shipping Container Key Codes

Stranded is mission 10 and swaps linear corridors for a large open battlefield, so each shipping container sits at a fixed map coordinate. Every keypad also carries a clue note that lists earlier codes, and the answers never change, which lets players skip the math.

Every container sits at a fixed spot, and the clue notes confirm the right keypad.

Several containers hold Yellow Supply Caches, and the Base Camp container stores supplies. The Base Camp clue note sits near the radio tower, so that stop makes a sensible first target.

Players chasing the Time to Crate trophy need all 26 Yellow Supply Caches in the mission, so the containers cover only part of the hunt.

MW4 Stranded Hidden Bunker Key Codes

Two hidden bunkers in Stranded use a different clue style from the containers. Instead of three earlier codes on a note, each bunker keypad points to a sum of outpost numbers on the map.

The bunker solutions skip the outpost math entirely, since each answer stays fixed.

• The Farm Field Hidden Bunker sits at coordinates 631, 127: players enter 0330, which equals the Logistics Station outpost numbers added together.

• The Island Hidden Bunker sits at coordinates 615, 169: players enter 0008, which equals the Infantry Checkpoint outpost numbers added together.

Other write-ups label the island bunker as northwest or southwest, so the coordinates matter more than the compass wording. Landing near 615, 169 settles which bunker the code belongs to.

Both keypads close out the Stranded code run, so opening them completes all eight locks in the mission.

MW4 Escape Safe Key Code Solution

Escape is mission 13, and its single safe sits inside a detention center where Ghost waits for rescue. The safe keypad pairs with a note titled Updated Code, so two separate spots matter.

Locating the note, the safe, and the keypad entry covers the whole puzzle.

• Players read the Updated Code note in the security office past the guard checkpoint: the note shows the safe's digits.

• Players leave the barracks and take the one door that opens on the right side of the hallway: the safe waits inside that room.

• Players type 8410 on the safe keypad: the lid swings free and the dog tags come out.

Crouching under the counter and waiting for a soldier to take a call and leave clears the way into the office. Reading the note then takes only a moment.

The dog tags inside the safe feed the Never Forgotten trophy, so this lock matters most to completionists chasing every campaign objective.

FAQs About MW4 Key Code Solutions

Final Words on Call of Duty MW4 Key Codes

Key code hunting in MW4 rewards sharp eyes more than puzzle skill, since every solution stays the same for every player. The real work lies in spotting the toolbox, the palace doors, the Stranded containers, and the prison safe along the way.

Completionists get the most from a steady pace. Opening locks as each mission arrives keeps the story moving, and the large Stranded battlefield suits a slower sweep with the map open. Matching each lock to its mission and entering the digits as written keeps the whole hunt quick and clean.

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