MagSafe is not charting on the new MacBook Pro 16 inch

Has anyone tried Restoring their Mac using Apple Configurator 2 (ver. 2.15) .. this might help. The restore will erase the Mac but it will also update any firmware chips if available…. Make sure your magsafe charger is plugged in while you do this, so the Mac can communicate with the chip in the cable… 

How to restore Mac using Apple Configurator 2 

https://support.apple.com/guide/apple-configurator-2/revive-or-restore-a-mac-with-apple-silicon-apdd5f3c75ad/mac

… If this doesn’t work, keep in mind that a future software update will update the firmware of the chips on the MacBook which will most likely resolve the issue

I definitely wouldn’t freak out and return the computer because it’ll take another two months to get a new one

Did you try to turn the MBP off completely , unplug everything, let it rest for 5-minutes and then restart?

read this too:

https://support.apple.com/en-us/HT203207

Here is the main thread on this: https://discussions.apple.com/thread/253303717

There are several threads on this issue now on these forum and on Reddit. Many people have the same issue. When laptop is turned off and the lid is closed Mag Safe acts in a strange way. LED light turns on and off continuously and plug/unplug sound goes hand in hand with this. Some of these people says that this started to happen after recent update. I have the same issue with my 16 M1 Pro.

Well, usually you would reset the SMC and NVRAM … However, in the new M1 macs these are done automatically when you shut it down and let it ‘reset’ for a few minutes…

Reddit thread - much wider issue: https://www.reddit.com/r/macbook/comments/qnfwxr/continuous_beeping_sound_when_laptop_is_shut_down/?utm_source=share&utm_medium=ios_app&utm_name=iossmf