This has been discussed to death but I figured to add my $.02 for anyone in case it helps anyone. I purchased a 2015 LR4 (SC V6) with 50k on it about 6 months ago. Over that timespan I've had two low coolant warnings along with a slight but persistant antifreeze smell after driving for any length of time. Finally decided to take the truck to an independent euro shop who did a pressure test and found the water pump leaking. They replaced the water pump and retested (passed); yet low and behold 2 weeks later I got another low coolant warning. Took it back to the shop where they proceeded to take off the intake and supercharger to find coolant pooled in the "V" and all of the coolant tubes leaking and in some state of decay. As many others have noted the splitting seams and leaky connections were the issue here, though he noted that the front were far worse than the back. Obviously I am replacing everything and should have the truck back tomorrow. This is really just a word of caution that for whatever reason a pressure test won't necessarily detect bad tubes, and you can have a bad coolant leak yet not see any coolant on the ground. If you are at 50k you are best to just bite the bullet and do this work evenf if you don't have a leak because the parts LR put in there are just so sh*tty.

I was glad to see the settlement from the timing chains in the earlier models and it would be great if someting similar happened for the coolant crossovers. This was a $70k car when new, and this is a critical design flaw that could cause catastrophic damage if one of the tubes were to burst while on the highway.

 

You can see the actual parts in this document. They updated the design for the 3.0 V6 SC engines, to have a seamless lower and upper front coolant pipe. No idea if that new design ever made it onto LR4 production late in the day, probably not from other comments on here. But the change, parts are cheap, is all labour for the removal of the supercharger.

https://static.nhtsa.gov/odi/tsbs/20...42170-9999.pdf