C5 Automatic lighting issue.

[PeteUK]

Thanks all for the responses.
I mistakenly thought DRLs were front only. But I see now that some (including the C5 obviously) are front and rear.

[Bertiebus]

Think this is mainly to address the issue of drivers running on drls and forgetting to put other lights on in the dark....

Simple solution to a problem that shouldn't happen

[Beanee687]

On the C3 MK3 2017 that I have the DRLs are on bright during daylight along with the rear lights.
At night either under Auto or manual control the DRLs dim and are the sidelights and the rears are still on. Seems to be the norm these days. See and be seen.