My wife's Range Rover Sport 2014 comes up with the following error codes:
C1B11, C1119, U0001, B1304

A red triangle lights up in the instrument, and it turns off the chassis control

Is this a known issue on these car ?
Where to start and troubleshoot

I currently also have C1119 but not the others. Mines is related to a hydraulic pressure sensor which affects vehicle stability. I’m currently waiting on my warranty company to authorise works 2016 RRS Autobiography

Then the red light goes out when refilling with fluid, but it flows out under the car at the driver's door, so a larger leak is enough

Does anyone have an exploded view of the Active Anti-Roll Bar System on this car, hoses, units etc,
Do we need to find out what we need from parts?
Or does anyone know if there is a known problem on these cars, leakage under the driver's door.

Thanks in advance

It sounds like you have already identified you have a leak and you just need to have a look underneath.

Have a look here to identify the components for the active ARB for the the L494...

http://new.lrcat.com/#!/12133/141998/142289/11556 Kev

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

Yeh definitely sounds like a leak which should be a bit similar to find. Mines is more of a sensor issue and the dispersal of the fluid, when I topped mine up it chucked it back out of the reservoir 2016 RRS Autobiography

Then I removed the plastic cover under the car on the driver's side. Found some gravel and mud there, so the pipes had rusted, and therefore holes in one. They were not pretty, so I wonder if I should change them all when I first do this. But found that they were not cheap, someone who has someone who can deliver at a nice price. Thanks in advance