When Check Engine light should go off?

Audi A6 C7 (2015) 2.0 TDI 190hp.
When should check engine light should go off?
Now when you get into the car only this is on, after you start the car check engine light goes away. I though Engine light should come up and go off in 5 sec or so. Or is it something different when car has keyless entry?
Seller (official dealer) says its should be like this. But should it?
On my older A4 B8 when you set the key in, light on and after some time all lights are off.
Sorry if this was asked before.

Sounds right to me.

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Originally Posted by Whippy53

Sounds right to me.

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So it suppose to do that?

It goes off, so i can't see an issue. If you're concerned run a VCDS scan.