Well, today I stumbled across a feature I didn't know existed on the L320.

Pressing, then holding down the centre interior light button for about 5 seconds, switches the interior lights mode either to off or auto. The LCD next to the speedo will display either 'Interior Lights Auto' or 'Interior Lights Off' depending on what mode you select.

This is a handy feature for me personally because it means I won't wake the sleeping baby up when I open the doors from now on. Kev

MY2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
MY2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey

Also good for not draining the battery when doors open to clean interior  Visitor from fullfatrr.com
* GONE. 2012 RR Sport HSE SDV6 Orkney Grey. Now being piloted by RRSTDV8
* GONE: 2011 4.4 TDV8 Full Fat. Amazing piece of kit.
* Current. 1974 Lightweight 2.25L petrol. Old skool
* GONE. Freelander GS TD4 Manual MY2013. Orkney Grey with privacy, cold and clearview packs, armrests (a must!) and a spoiler.
* GONE. Range Rover Classic '93 200Tdi Factory fit
* 1949 80" in family since 1975

When I swapped the bulb (took out the knackered flashing LED and put a new LED in) I accidentally put the cover on back to front, which held the button in for >10 seconds.. once I'd turned it back around the light no longer came on with the doors and I couldn't figure out why.

I had to actually read the manual to figure that out  2014 BMW 530d Touring, 2006 BMW 650i, 2018 Mini Cooper S