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Modern Warfare 4’s campaign locks use clues found in the mission rather than a single universal code list. In Following Orders, enter 214 at the red toolbox/safe; in Escape, enter 8410. The open-world Stranded mission has six shipping containers and two hidden bunkers. Start with the Base Camp container, use its intel map to reveal the other locations, and keep every leading zero when entering a four-digit code.
The current field solutions, based on guides dated October 16–18, 2026, are listed below. Layouts, rewards and code behavior can change after a patch, so treat these as current reference solutions rather than an immutable developer specification.
Every known Modern Warfare 4 lock code
| Mission | Lock and location | Code | Clue type | Important detail |
|---|---|---|---|---|
| Following Orders | Red toolbox/safe | 214 |
Fixed mission code | The same value is reported for all scenarios. |
| Escape | Safe | 8410 |
Fixed mission code | Its opening is part of the Never Forgotten collectible route. |
| Stranded | Base Camp shipping container | 0024 |
Clue sequence | Recommended first stop; the intel map inside marks other locks. |
| Stranded | Cliff near Base Camp container | 0600 |
Fixed-step sequence | Keep both leading zeroes. |
| Stranded | Big Sign container | 1234 |
Digit pattern | Digits build in ascending order. |
| Stranded | Small Island container | 6789 |
Digit pattern | The displayed four-digit progression ends here. |
| Stranded | South of Jamming Station container | 8609 |
Mixed digit pattern | Read each digit’s movement rather than treating it as one number. |
| Stranded | Southeast Village container | 0078 |
Fixed-step sequence | Retain both zeroes at the beginning. |
| Stranded | Farm Field hidden bunker | 0330 |
Map counting and addition | Logistics-station values appear after the relevant outposts are cleared. |
| Stranded | Island hidden bunker | 0008 |
Map counting and addition | River-checkpoint values must be visible on the tacmap. |
For the Stranded locks, enter all four positions exactly. A keypad entry of 24 is not equivalent to 0024, and 78 is not equivalent to 0078.
What the locks are in each campaign mission
Following Orders: the red toolbox or safe
The red lock in Following Orders is a three-digit interaction, not one of Stranded’s four-digit container puzzles. Enter 214 when the keypad prompt appears. Destructoid staff writer Arka Sarkar reports that this value is the same across scenarios, so replaying the mission does not require a different combination.
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The mission also contains four notes and four contraband items. Opening the red lock is therefore useful when you are pursuing the No Stone Unturned collectible achievement rather than simply trying to finish the objective.
Escape: the safe
Escape uses the four-digit safe code 8410. This safe is associated with the Never Forgotten collectible route. Enter the zero as the third character; dropping it changes the sequence and leaves the safe locked.
Stranded: eight keypad locks
Stranded is the open-world puzzle area. Six locks are on shipping containers and two are on concealed bunkers. The mission does not require memorizing a random password: the notes and tacmap clues describe arithmetic steps, digit movements or map totals. MW4Codes summarizes the design by noting that each combination can be worked out in the field once those three puzzle families are understood.
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The fastest order for opening every Stranded lock
- Go to Base Camp first. Open the Base Camp container with the value in the code table and collect the intel map. This is the most efficient starting point because the map marks the other locked containers.
- Follow the tacmap to the nearby cliff. The cliff lock is close to Base Camp and uses a descending fixed-step sequence. Solve the note, then enter the listed four-digit result.
- Move to the Big Sign and Small Island containers. These are digit-pattern puzzles. Read the digits in the order shown on their notes instead of adding the four-digit strings as ordinary numbers.
- Visit the South of Jamming Station container. Its pattern mixes digit changes, so compare each position between successive examples. Do not assume every column changes by the same amount.
- Clear the Southeast Village container. This is another fixed-step sequence and is easiest once you recognize the increment from the note.
- Finish the Farm Field bunker. Clear the relevant logistics outposts first. Their values then appear on the tacmap and provide the numbers needed for the bunker calculation.
- Finish the Island bunker. Clear or reveal the river checkpoints so their values are visible, add the indicated values, and enter the resulting four-position code.
This route minimizes backtracking because the first container supplies the map and the later bunker calculations depend on map information that may not appear until nearby objectives are cleared.
How Stranded’s three puzzle families work
Fixed-step sequences
A fixed-step clue gives several examples and asks you to continue the same arithmetic operation. The operation may be an increase or a decrease, and it applies to the whole displayed value. At the cliff near Base Camp, the note shows 9300, then 6400, then 3500; subtracting 2900 each time produces the final four-digit entry. The Southeast Village note shows 0012, 0034 and 0056; adding 0022 produces the final value. Treat these as four-character strings when entering them, because arithmetic can produce a result that begins with zero.
Digit patterns
Digit-pattern clues change positions independently. The Big Sign note builds the sequence one digit at a time until it reaches the ascending four-digit result. At Small Island, the displayed examples progress from 3456 to 4567 to 5678; advancing every position by one gives the final sequence. The South of Jamming Station puzzle is deliberately less uniform: its columns follow a mixed pattern, so write the examples in a grid and inspect the first, second, third and fourth positions separately. Trying to calculate one large numerical difference is the common mistake.
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Map counting and summing
The two bunkers turn the tacmap into the clue sheet. At Farm Field, the relevant logistics-station values must be revealed by clearing the associated outposts; use the numbers shown at those stations to reach the bunker result. At the Island bunker, reveal the river checkpoint values and perform the indicated addition. If a required number is missing, the problem is usually incomplete map discovery rather than a wrong keypad input. Clear the nearby objective, reopen the tacmap and check that every referenced location is labeled before calculating.
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Base Camp container
Use Base Camp as your anchor. The container is intended to be opened first, and its intel map marks the remaining locked containers. Take a screenshot or pause over each marker if you want to plan a single circuit before moving. Enter the four-character Base Camp value exactly as displayed in the table, including the two initial zeroes.
Cliff near Base Camp
The note presents three descending examples: 9300, 6400 and 3500. The constant subtraction leads to the lock’s final value. Because the answer begins with zero, use the keypad’s full four-character sequence rather than trimming it to three characters.
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Big Sign
The Big Sign clue is the simplest digit-pattern example. The note builds an ordered 1-2-3-4 progression, so read the intended sequence directly from the pattern. This is a container lock, not a bunker calculation; no outpost-clearing step is needed.
Small Island
Small Island continues the overlapping runs 3456, 4567 and 5678. Shift every digit forward by one position to obtain the final entry. The island’s separation from the mainland makes it efficient to combine this stop with the later Island bunker rather than making two separate crossings.
South of Jamming Station
This container uses a mixed pattern. Compare each column in the note and continue the individual movements to obtain the listed result. If one digit appears to wrap around while another advances normally, preserve that behavior; the puzzle is not meant to be solved by a single whole-number increment.
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Southeast Village
The examples 0012, 0034 and 0056 reveal a constant increase. The final value retains its two leading zeroes. Enter it as four characters even if the keypad accepts shorter input elsewhere.
Farm Field hidden bunker
Do not guess this bunker from the visible terrain. First clear the logistics stations or outposts referenced by the clue. Once their values appear on the tacmap, add the required numbers and enter the resulting four-digit bunker code. If the map still lacks a station value, continue the local objective chain before touching the keypad.
Island hidden bunker
The Island bunker uses river checkpoints rather than logistics stations. Reveal the checkpoint labels, add the values specified by the clue and preserve all four positions in the final entry, including the three leading zeroes. Pairing this bunker with the Small Island container saves a return trip.
What you get for opening the locks
The container rewards listed by The Based Otaku’s guide are practical equipment upgrades rather than cosmetic items. Exact placement can change with updates, but the current guide associates the Stranded locks with the following gear:
| Reward | Why it matters during the open-world mission |
|---|---|
| Heartbeat Sensor | Provides a way to detect nearby hostile movement before entering a compound. |
| SANG 9MM Silencer | Improves stealth options for compatible sidearm loadouts. |
| Scout Drone | Lets you survey an area and mark threats before committing to a route. |
| Tracking Device | Supports following or locating marked targets during later objectives. |
| Backpack Upgrade | Expands carrying capacity, reducing the need to abandon collected equipment. |
Stranded also has 26 Yellow Supply Caches and 58 notes, according to AllThingsHow Staff’s 2026 collectible count. Opening all 26 caches contributes to the Time to Crate achievement; reading 50 of the 58 notes contributes to Noteworthy. Those totals are separate from the four notes and four contraband items in Following Orders, which support No Stone Unturned.
Quick Recap
Troubleshooting a rejected code
- Check the mission first. The three-digit
214belongs to Following Orders; the four-digit8410belongs to Escape. Stranded codes cannot be substituted between missions. - Restore leading zeroes. Codes such as the Base Camp, Southeast Village, Farm Field and Island entries require four positions. Re-enter the zeroes rather than only the non-zero digits.
- Confirm the location. Stranded has two similarly named island-related objectives: the Small Island container uses a digit pattern, while the Island bunker uses river-checkpoint totals.
- Recheck map prerequisites. For either bunker, clear the relevant outposts or checkpoints and reopen the tacmap. Missing labels mean the calculation cannot yet be completed.
- Inspect the clue examples again. Fixed-step puzzles require a constant arithmetic difference; digit-pattern puzzles require column-by-column comparison. Mixing those methods produces a plausible-looking but incorrect number.
- Account for updates. The cited guides were current on October 16–18, 2026, and no official publisher code table was identified. If a previously valid value is rejected after a patch, reload the mission, verify the marker and note at that location, and use the newly displayed clue.
Quick completion checklist
- Open the Base Camp container before touring the rest of Stranded.
- Collect the intel map and mark all six container and two bunker locations.
- Write every clue as a four-character value, preserving leading zeroes.
- Use subtraction or addition for fixed-step notes.
- Compare individual columns for digit-pattern notes.
- Reveal logistics-station values for Farm Field and river-checkpoint values for Island.
- Collect the equipment and track cache, note and contraband progress in the relevant achievement menus.
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