ARC Raiders: How to Solve the Controlled Access Zone Puzzle on Dam Battlegrounds

The Controlled Access Zone is one of the newest puzzle locations added to ARC Raiders with the Shrouded Sky update. It is located on the Dam Battlegrounds map near the Generator Hall and the Power Generation Complex and has quickly become one of the most valuable loot spots in the area.

Unlike many other rooms in the game, this location cannot be opened with a simple keycard. Instead, players must solve a multi-step puzzle that requires teamwork, exploration, and materials before the final loot room becomes available.

Below is a complete guide explaining how the puzzle works and how to unlock the hidden loot inside the Controlled Access Zone.

Where to Find the Controlled Access Zone

The Controlled Access Zone is located inside the Dam Battlegrounds map, typically found between The Breach and the Power Generation Complex. Players can enter the area from several routes, including upper walkways, ladders, and lower interior entrances within the dam structure.

Once inside, you will notice an industrial facility with multiple levels, pipes, platforms, and stairways. The puzzle elements are spread across these floors, so expect to move between upper platforms and lower flooded areas while searching for items and switches. Many valuable containers are also located around this region, and if you want to explore more loot locations nearby, you can check the guide “Where to Find Weapon Cases in Arc Raiders: Dam Battlegrounds Map,” which explains other high-value spots across the map.

This area is considered high risk and high reward, meaning other players often visit it during raids. It’s common to encounter enemy squads while attempting to solve the puzzle.

Step 1 – Find the Power Cell or Battery

The first step is to power up the facility.

Inside the zone you will find a terminal with an empty slot that requires a power item such as a Fuel Cell or battery. These items usually spawn somewhere inside the structure, often on the lower floors or near industrial equipment.

Tips for finding the battery quickly:

• Search lower floors and storage areas
• Check near pipes, machinery, and crates
• Look in corners or on open platforms
• Clear AI enemies before searching

Once you find the battery, bring it to the terminal and insert it into the power slot. This activates part of the facility and unlocks access to the next stage of the puzzle.

Step 2 – Locate the Four Puzzle Buttons

After powering the system, you must locate four different buttons hidden around the structure.

These buttons are placed on platforms, pipes, or nearby rooms throughout the area. Their exact locations may change slightly between raids, so players should explore carefully.

Typical button locations include:

• One near the main locked door
• One inside a room unlocked by the fuel cell
• One placed on a pipe near a support pillar
• One located on another pipe near the upper walkway

Each button corresponds to a light indicator above the locked door.

Step 3 – Press All Buttons at the Same Time

This is the most important part of the puzzle.

To open the first locked door, all four buttons must be pressed simultaneously. This means you need four players working together, with each player standing at a different switch.

A simple strategy is to:

1. Assign one player to each button.
2. Start a countdown in voice chat.
3. Press all buttons at the same moment.

If done correctly, the lights above the door will activate and the first security door will open.

This step makes the puzzle difficult for solo players, since the mechanic is designed for cooperative gameplay.

Step 4 – Repair the Control Panel

Opening the first door is not the end of the puzzle.

Inside the next room you will find a damaged control panel or circuit breaker that must be repaired. This requires inserting specific materials into the machine.

The required items change each raid, but examples include:

• Metal Parts
• ARC Power Cells
• Motors
• Industrial Batteries
• Leaper Pulse Units
• Basic scrap or mechanical components

Once the correct materials are deposited, the system powers up and the final door unlocks.

Step 5 – Enter the Loot Room

After completing both puzzle stages, the final door opens and reveals the Controlled Access Zone loot room.

Inside you can usually find:

• Weapon cases
• Backpacks
• Grenade containers
• Rare crafting components
• Mechanical parts and resources

This room is considered one of the better loot locations on Dam Battlegrounds, which is why many players attempt the puzzle every raid.

However, the noise and time required to solve the puzzle often attracts other players, so be prepared for possible fights.

Tips for Completing the Puzzle Safely

To complete the Controlled Access Zone puzzle efficiently, it is important to prepare before starting the process. First, players should bring a full squad, since the puzzle requires four buttons to be pressed at the same time. Coordinating with teammates beforehand ensures that each player knows which position they need to take during the puzzle.

Another important step is to clear the area of enemies before attempting the puzzle. Hostile robots and other raiders often patrol the Dam Battlegrounds facility, and they can easily interrupt the process while players are searching for batteries or standing at the buttons. Eliminating nearby threats first will make the puzzle much safer to complete.

It is also helpful to carry extra materials whenever possible. The machine behind the first door requires random components to unlock the second door, so having spare mechanical parts or batteries in your inventory can save time if the required materials appear during that raid.

Good communication between teammates is essential as well. Since all four buttons must be pressed simultaneously, players should assign positions in advance and use a countdown or voice communication to press the buttons at the exact same moment.

Finally, it is smart to plan your extraction route before opening the final loot room. The puzzle takes time and often attracts other players in the area. Once the room opens and the loot is collected, the team should leave quickly to avoid potential ambushes from other squads moving toward the location.

The Controlled Access Zone puzzle is one of the most interesting cooperative mechanics currently available in ARC Raiders. Instead of simply unlocking a door with a key, players must explore the area, find power items, coordinate button presses, and repair machinery to reach the final reward.

Because of its valuable loot and team-based mechanics, the location has quickly become a popular hotspot on Dam Battlegrounds. If you bring a squad, communicate properly, and prepare the necessary materials, this puzzle can easily become one of the most profitable activities in the game.