I hope you'll forgive me for starting a new thread about this, as the points I'm about to mention have been raised in other threads. I'm doing so because I feel there is probably a connection between these seemingly unrelated faults - the connection being that they all relate to which side of the road the car thinks we should be driving on. These are discussed in the following threads:
ACC Misbehaving
KPH/MPH
Full Matrix Headlights
In Vehicle app, under Headlights, there are several settings relating to lights, one of which is labelled "Travel mode". This shows either "Driving on the right" or "Driving on the left". Although there's a pull-down menu, which confusingly offers the options "Traffic on the right" and "Traffic on the left", I find it doesn't let you change the setting from what it's already set on.
When I look at this setting I find that usually it is set to "Driving on the right" but sometimes it shows "Driving on the left". Whatever it is set to it seems to remain on that for the rest of the day. I'm guessing that the car is supposed to use GPS to decide, based on the driving rules in the country it's in. If so, it is clearly confused about where I live as it surely ought always to show "Driving on the left".
Even stranger than this is a message I sometimes get on the instrument panel when starting the car warning me that the "Headlight adjustment for driving on the right is active". Whenever this message has been displayed, I've gone to the Vehicle settings and found the Travel mode set to "Driving on the left". This has been the case every time I've checked.
My idea is that if the car is confused about where it is, and on which side of the road I should be driving, it could explain all the problems listed above. The ACC overtaking problem would be explained if it actually thought it was undertaking (i.e. it couldn't pass the slower car to the left - which would be true in most of Europe), it could explain the KPH/MPH problem, and might explain why the headlights sometimes dazzle oncoming drivers (if they're set for the wrong side of the road).
As I said, I've commented on this in separate threads but as I feel they may all be connected, I wanted to bring them all together.
I'm attaching my System Information panel in case it's relevant. My car is going to the dealer tomorrow for the latest update - I wonder if it will it be 1803 or perhaps the new one that's expected any time now.