other than a dealer visit is there a diy way of activating the drl function...mines a 05 touch screen head unit ...i dont know whether the stuff in the back is bmw or not but its got landrover labels all on it....

'DRL' function? You've lost me! (which isn't difficult to be fair!) My Previous RR's!
2018 P400e Autobiography
2008 TDV8 Vogue
2006 TD6 Vogue
2007 TDV8 Vogue
2007 RRS (I know, it doesn't count!)
2005 4.4 Vogue on LPG
2005 TD6 Vogue
2003 4.4 Vogue
2001 4.6 HSE
2000 2.5 DHSE
1999 4.6 HSE
1997 4.6 HSE on LPG
1995 2.5 DSE
1989 3.9 EFI classic
1988 3.5 EFI classic

apparently the day time running lights can be turned on via a diagnostic program which makes the main beam light come on at a reduced brightness when you switch on the ignition...the light go out when you put the normal side/head lights on...

hi the day time lights are a function of the light control unit, yes it can be done by your self if your system is the bmw system and then you would use navcoder. V8 facelift Range Rover Autobiography 22" wheels.
1976 Harley Davidson Iron Head Sportster

its frustrating not knowing what system i have cos theres no obvious markings for bmw or ford...