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Introduction

The Dyson V15 Detect’s High Torque cleaner head is a sophisticated piece of engineering. It uses a powerful internal motor to drive stiff nylon bristles into carpets while spinning an "anti-tangle" comb to shred hair on the fly. However, because this head houses a DLS (Dynamic Load Sensor) that communicates directly with the vacuum's microprocessor to adjust suction, even a small buildup of debris in the drive assembly can cause the motor to pulse, overheat, or shut down entirely.

Before you begin, keep these three things in mind:

Safety First: Ensure the vacuum is powered off and the battery is removed or the wand is disconnected to prevent accidental activation while your fingers are near the brush bar.
No Water: Unlike the soft "Fluffy" rollers, this brush bar contains an integrated motor assembly. Never submerge the bar or the head in water, as this will cause a permanent electrical short.
The "Coin" Rule: You’ll need a small coin or a 15.00mm flat-head screwdriver to toggle the end-cap lock. Aside from that, no specialized tools are required for this maintenance.

By following this guide to clear the drive spindle and inspect the "neck" for hidden blockages, you’ll restore the acoustic dust-sensing accuracy and keep your V15 running at peak performance.

What you need

Step 1 Head Brush Bar

Dyson V15 Detect Head Brush Bar Replacement, Head Brush Bar: step 1, image 1 of 3

Dyson V15 Detect Head Brush Bar Replacement, Head Brush Bar: step 1, image 2 of 3

Dyson V15 Detect Head Brush Bar Replacement, Head Brush Bar: step 1, image 3 of 3

Detach the high torque cleaner head from the vacuum wand by pressing the red release button.

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Step 2

Dyson V15 Detect Head Brush Bar Replacement: step 2, image 3 of 3

Unlock the end cap.
Use a US coin (or a 15.00mm flat-head screwdriver) to turn the end cap on the side of the cleaner head 90° counterclockwise to the "unlocked" position.

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Step 3

Dyson V15 Detect Head Brush Bar Replacement: step 3, image 3 of 3

Pivot the end cap upward and away from the housing.

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Step 4

Dyson V15 Detect Head Brush Bar Replacement: step 4, image 3 of 3

Grasp the edge of the brush bar (the purple and black spiraled cylinder) and slide it straight out of the vacuum head.
If the bar feels stuck, check for thick hair-wrap around the edges and use scissors to carefully snip the fibers.

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Step 5

Look into the empty cavity of the cleaner head. You will see a plastic gear (the drive cog). Use a flocking sponge to pull out/remove any hair or carpet fibers wrapped around this gear.
Do not use water to clean the inside of the motor housing. Only the removable brush bar should be cleaned with a damp cloth.

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Step 6

Dyson V15 Detect Head Brush Bar Replacement: step 6, image 3 of 3

Slide the new (or cleaned) brush bar back into the housing. You may need to rotate it slightly until you feel the notches on the bar "seat" onto the drive cog.
Ensure the brush bar is 100% dry before sliding it back into the vacuum head to prevent electrical damage.