We have a ‘21 580 and the Heads-up has just stopped working.
We also have a clicking noise on the drivers side - when deceleration - almost like a a gear clicking, roulette wheel, ???

We have service scheduled, but wondering what we might expect the issue(s) to be?

 

Did you check the menu to make sure you haven't disabled the Head Up?

 

Thanks - I think you are on to something. We changed the profile to my husband and it works.
So now I just have the clicking.

 

How loud is the clicking? Is it noticeable when the radio is on? Does it occur while parked?

 

The clicking is only there when in motion after driving a minute or so, then letting off the gas pedal or even braking. The tech heard it even just moving the car thru the service entrance. She likened it to shuffling a deck of cards.
To me, it's more like a sproing noise from when you play with a coiled door stop. It has a metal sound to it - like uncoiling,
I tried to record it but it never came thru.

I wish I would have thought to try putting it in neutral. It's been at the dealer for a week - but no progress.