Alle Getriebe Gangwahllampen an?? Was dat denn??

Hello dear people, I just went for a walk with my little one until the following phenomenon occurred:

I started the V8 and put the reverse gear in, but there was like a few times a slightly stronger back or. a very light bang (don't know how else to describe it), ok. Go ahead and be surprised that he's driving so slow. View by chance of my cockpit and see all the running step lamps fully glow! ??

I think what is that now? Car set up, restarted and everything normal. Then, as always, he was free of objection. I've never had one. What can that be? Was the gear in the emergency run?

Especially this banging when inserting the reverse is annoying. It's usually when it's cold. If I drive longer, there's nothing left. ==References== Too little gear oil? Too old?

Of course, I don't want anything to break.

Can someone help me or have they already had this situation?

I am grateful for every tip!

Thank you very much.

Mfg Thomas