Updated September 28, 2026
The Silent Hill: Townfall AUX puzzle can be confusing because the Auxiliary Lines document uses simple symbols that do not immediately explain how they correspond to the switches in the room.
The trick is to understand three things: the white stripes beside the switches, what the vertical and horizontal symbols mean, and which direction each line must be read.
Once those rules are clear, the puzzle becomes much easier to solve.
Quick Answer
To solve the Silent Hill: Townfall AUX puzzle:
- Use the 0825 locker code to get the AUX Key.
- Enter the AUX Room and collect the AUX Disk.
- Insert the disk into the computer to display the Auxiliary Lines document.
- One stripe = Line 1.
- Two stripes = Line 2.
- Three stripes = Line 3.
- A vertical | symbol means the switch should be up.
- A horizontal _ symbol means the switch should be down.
- Lines 1 and 2 are read from right to left.
- Line 3 is read from left to right.
- Each line's indicator turns green when its switches are correct.
If you're playing the PC version and are also dealing with performance problems during Townfall, see our Silent Hill: Townfall Best PC Settings: FPS, Shader Stutter Fix Guide for graphics settings, DLSS recommendations, and shader-stutter fixes.
📋 Table of Contents
- Quick Answer
- How the Silent Hill: Townfall AUX Puzzle Works
- How to Get the AUX Key and Auxiliary Lines Document
- How to Read the AUX Pipe Symbols
- What the White Stripes Mean
- Which Direction Should You Read the Switches?
- Line 1: One-Stripe Switches
- Line 2: Two-Stripe Switches
- Line 3: Three-Stripe Switches
- Why Is the AUX Puzzle Still Red?
- What to Do After Solving the AUX Puzzle
- Silent Hill: Townfall AUX Puzzle FAQ
How the Silent Hill: Townfall AUX Puzzle Works
The AUX puzzle takes place in a room filled with groups of red switches.
You first need to find the Auxiliary Lines document. It contains three patterns that tell you which switches need to face up and which need to face down.
The important part is that the switches are divided into three separate groups.
You can identify those groups by the number of white stripes painted beside each switch:
- One white stripe: Line 1
- Two white stripes: Line 2
- Three white stripes: Line 3
The document then provides a pattern for each group.
The puzzle is complete when all three groups match their corresponding patterns and their indicators turn green.
The important part: don't read every switch from the same direction
This is where the AUX puzzle catches many players.
The first two groups use a different reading direction from the third:
- Line 1: right to left
- Line 2: right to left
- Line 3: left to right
So if your individual switch positions appear correct but a light remains red, check the direction before changing everything again.
How to Get the AUX Key and Auxiliary Lines Document
Continue through the Remote Systems Control sequence until the game provides the locker code.
The code you need is:
0825
Use it on the nearby locker to obtain the AUX Key.
Take the elevator to the AUX Room and use the key to enter.
Inside, look for the AUX Disk. Insert it into the computer to access the Auxiliary Lines document.
That document is the reference you need for the switch puzzle.
How to Read the AUX Pipe Symbols
The Auxiliary Lines document looks much more complicated than it actually is.
There are only two switch states represented by the symbols:
| Symbol | Switch position |
|---|---|
| | | Up |
| _ | Down |
Think of the document as a simple sequence of up and down instructions.
For example:
| _ |
means:
Up → Down → Up
The document gives you the required switch positions, while the painted arrows beside the pipes show which direction you should follow each line.
This is why the direction matters just as much as the symbols themselves.
What the White Stripes Mean
The white markings beside the switches tell you which switches belong to which line.
One stripe
These switches belong to Line 1.
There are 9 switches in this group.
Two stripes
These switches belong to Line 2.
There are 9 switches in this group.
Three stripes
These switches belong to Line 3.
There are 8 switches in this group.
That gives you 26 switches in total.
The stripe markings are therefore the easiest way to separate the large switch wall into the three patterns shown on the document.
Which Direction Should You Read the Switches?
This is the most important part of the puzzle.
Do not assume that every group should be read from left to right.
Use these directions:
- Line 1: right to left
- Line 2: right to left
- Line 3: left to right
In other words, the document's first instruction for Line 1 corresponds to the switch at the starting end of that group, not necessarily the switch you would consider the leftmost one.
The first two lines begin from the side near the cabinet, while the third line is read from the opposite direction.
Easy way to avoid mistakes
Before flipping any switches, identify:
- The number of stripes.
- The correct starting side.
- The direction you need to read.
- Whether each symbol means up or down.
Then work through the pattern one switch at a time.
This is much safer than trying to remember a long sequence and randomly correcting red switches afterward.
Line 1: One-Stripe Switches
Find the switches marked with one white stripe.
There are 9 switches in this group.
Read them right to left.
The required positions are:
Up → Down → Up → Up → Down → Up → Down → Up → Up
In shorthand:
| _ | | _ | _ | |
Once the entire group matches the document, its indicator should turn green.
Line 1 checklist
- White stripes: 1
- Number of switches: 9
- Reading direction: Right to left
- First position: Up
- Final position: Up
If the indicator stays red, check that you started from the correct side rather than immediately changing individual switches.
Line 2: Two-Stripe Switches
Next, find the switches marked with two white stripes.
This group also contains 9 switches.
Again, read the group right to left.
The correct sequence is:
Up → Down → Down → Down → Up → Down → Down → Up → Up
In shorthand:
| _ _ _ | _ _ | |
After the positions match the Auxiliary Lines document, the second indicator should turn green.
Line 2 checklist
- White stripes: 2
- Number of switches: 9
- Reading direction: Right to left
- First position: Up
- Final position: Up
The biggest mistake here is reading the switches left to right. If you do that, the sequence will appear wrong even if you copied the symbols correctly.
Line 3: Three-Stripe Switches
The final group is marked with three white stripes.
There are 8 switches here.
Unlike Lines 1 and 2, Line 3 must be read left to right.
The correct sequence is:
Down → Up → Up → Up → Down → Up → Down → Up
In shorthand:
_ | | | _ | _ |
Once these switches are correctly positioned, the final indicator should turn green.
Line 3 checklist
- White stripes: 3
- Number of switches: 8
- Reading direction: Left to right
- First position: Down
- Final position: Up
Why Is the AUX Puzzle Still Red?
If one or more indicators remain red, don't reset the entire puzzle immediately.
Check these points first.
1. Check the stripe count
Make sure you're working on the correct group.
- One stripe = Line 1
- Two stripes = Line 2
- Three stripes = Line 3
2. Check the direction
This is the most common source of confusion.
Remember:
- Lines 1 and 2 → Right to left
- Line 3 → Left to right
3. Check the symbol meaning
The document uses:
- | = Up
- _ = Down
4. Count the switches
There should be:
- 9 one-stripe switches
- 9 two-stripe switches
- 8 three-stripe switches
If your count doesn't match, you're probably including switches from another group.
5. Look for the green indicator
You don't need to guess whether a group is finished.
The corresponding indicator changes to green when the line is correctly configured.
What to Do After Solving the AUX Puzzle
Once all three AUX indicators are green, the switch puzzle itself is finished.
Return to the Remote Systems Control area and continue the sequence there.
The next task involves Flush Aux Line B at the remote control console. The AUX switch puzzle is therefore part of a larger sequence rather than the final objective of this section.
If you're following the story progression, don't keep searching the AUX Room after all three indicators are green. The next stage takes you back to the control system.
Silent Hill: Townfall AUX Puzzle FAQ
What is the AUX puzzle in Silent Hill: Townfall?
The AUX puzzle requires you to configure three groups of switches according to the Auxiliary Lines document found through the AUX Room computer.
What is the AUX locker code in Silent Hill: Townfall?
The locker code is 0825. The locker contains the AUX Key, which allows you to enter the AUX Room.
What does the vertical line mean in the AUX puzzle?
The vertical | symbol means the corresponding switch should be up.
What does the horizontal line mean in the AUX puzzle?
The horizontal _ symbol means the corresponding switch should be down.
What do the white stripes mean?
The number of white stripes identifies the switch group:
- One stripe = Line 1
- Two stripes = Line 2
- Three stripes = Line 3
Which direction should I read the AUX switches?
Read Line 1 and Line 2 from right to left.
Read Line 3 from left to right.
How many switches are in the AUX puzzle?
There are 26 marked switches in total:
- 9 for Line 1
- 9 for Line 2
- 8 for Line 3
Why is my AUX light still red?
Check the switch direction first. Lines 1 and 2 are read right to left, while Line 3 is read left to right. Then verify that | means up and _ means down.
Do I need the AUX Disk?
Yes. The AUX Disk is used with the computer in the AUX Room to access the Auxiliary Lines document that provides the switch patterns.
What happens after the AUX puzzle?
After all three indicators turn green, return to the Remote Systems Control console and continue the next stage of the sequence.
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