Step 2. 5 stars for Dyson customer support! Usually, disassembling the vacuum is a must to get to the source of the issue. Unscrew the large screws fastening the cover -- … I was hoping they would tell me where I could buy a battery, but instead they are sending me a new battery for free. Sometimes to reset a BMS requires charging through the discharge wires for a few seconds to jolt the BMS … Flip the machine over to reveal the bottom side of the vacuum cleaner head. Step 3. Dyson vacuum cleaners are one of the best pet hair vacuum cleaners in the world, they are a very renowned vacuum in the marketplace, however, Dyson vacuums usually do not come with a direct reset button because it is built with the most advanced technologies and a motor that can last a very long time without any trouble. But that does leave me with a dead battery case, a market full of 18650 cells with almost double the capacity of the standard Dyson 22mA packs, and only a missing BMS to make this work. Shop at Dyson.com for free shipping & warranty. To help you figure out the steps to reset your vacuum, we made this short guide that includes an explanation on what exactly you could do. Get expert help troubleshooting from Dyson to get the most out of your machine. Turn your Dyson vacuum cleaner's power off and unplug the cord from the electrical outlet. but if you are here this means it did not work and you need more extreme measures to revive it. If your BMS has shut down the pack, the first thing is to try charging the pack. How to Reset a Dyson Vacuum Step 1. Dyson vacuums do not have a reset button you can push to solve all the problems, but there are a couple of things you can do.