I have Philips vacuum cleaner, I guess it's 30 years old. Some ducttape on the hose but still going strong. I bought a cordless one 2 years ago (also Philips, 8000 series), really love it, but it's starting to fail. I go back to the shop and the thing just works like normal, come back home... brush and leds fails periodically. So annoying. I also own a lot of supossed 25.000 hours-of-life Leds, that failed after 1-2…
And, from my experience, it's probably the battery that's failing in your cordless vac.