MacBook Pro Touch Bar not lighting up

arnelc824 wrote:

I have 2020 M1 MacBook Pro. After I updated to Mac OS Sonoma, Touch Bar is no longer lighting up. I initially thought it would get fixed when the OS updates are installed but it's still the same. It's actually worse now because initially, it still lights up from time to time. However, after the last Sonoma update, it's no longer lighting up at all. When I press it, it still works though. But I have to guesstimate where the volume or brightness button is on the Touch Bar since I can't see it. How do I fix this?

On the M1—A SafeBoot Use safe mode on your Mac - Apple Support will sort many anomalies

if no resolve you take it in for repair—

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"

Genius Bar Reservation and Apple Support Options - Apple

Outside the USA

Contact Apple for support and service - Apple Support