First step - pressure test the system. Have you ever replaced the coolant reservoir cap ? The plastic tanks can also fail at the seams due to age - but normally you would find some white residue around there.

 

Don't know if the previous owner replace the cap or not. cap looks old so I doubt it. I'll check the bottom of the tank to see. Thanks

 

I'm having the same issue. My coolant was quite low, well below the cold fill range. I had seen some small orange puddles on the garage floor. So I had the following replaced: oil cooler o-ring, cooling hose, oil cooler seal, intake manifold gasket-S, thermostat assembly, radiator house, coolant outlet flange, water outlet o-ring, water outlet plug, and probably a few more things. I'm not seeing the puddles anymore, but the coolant level continues to drop. I could be burning it off, but I don't smell it. It's a sealed system so what is going on here? Where is that coolant going?

 

yeah but I don't have any puddles on the ground....it's just weird

 

Hi
just bought a 2012 Range Rover Sport HSE Luxury Edition. 5.0L V8

this happened about 3 weeks ago. Low coolant warning message on, checked coolant and was low so Top it off. Today the same thing happened. Check the ground and engine bay no coolant leak found. Engine runs good, engine temp are good....I can't figure it out where did the coolant went?

any help will be appreciated. Thanks

About a month ago, I had the same problem with my 2011 RRS Lux, only 41,000 miles. Coolant warning light, small puddles, etc. My trusted independent was unavailable so I took it to the dealer. After replacement of the water pump, gaskets, etc., I drove it 1800 miles and didn’t lose a drop of coolant.

 

thats what I'm thinking, it's the water pump. Since the water pump never been replace before(only 80,000miles) but no puddles on the ground...so I don't know.

 

Check your Coolant Crossover Pipe. Mine was leaking behind the water pump where it enters the engine block. Visually the coolant due to the leak is hidden and may not puddle under your car.

 

This?

 

BubbaRRSport, I wish your reply and video was posted a little earlier. My 2011 Range Rover Sport HSE’s crossover pipe was leaking at the seam. The leaking coolant was evaporating due to the heat of the engine so there was no puddle on the ground. I was adding coolant occasionally. Then, one day overheating light came on, tried filling it with water and the water came pouring out. Changed the water pump, restarted and water was still coming out. Found the split seam in the cross over pipe, replaced it, restarted and the head gasket was blown. Dealer and independent Landrover shops said I can change out the head gasket but I will likely be chasing issues related to the overheating of the aluminum engine. Now it’s just a 5,400 lb paper weight. It’s a shame because it’s in beautiful condition otherwise. I have learned it’s a very common issue with the non-supercharged 5.0 engine. I understand the crossover pipe in the supercharged Range Rover is metal rather than plastic. I wouldn’t buy another without changing out the FoMoCo plastic pipes. Hopefully, others are learning from your video before overheating ruins their engine.

 

HI did you have the issue repaired? I have the same issue on my 2013 rover.... they telling me new engine needed... its crazy... why cant they just change the head gasket or heads?

 

Did you ever figure this out? I’m having a similar issue, with no obvious leak/drips. I had the water pump/coolant crossover replaced prior(bc there was a real leak), now I’m left wondering.

 

I have had the same issue for 2 years! can’t find any leak but everyday my coolant is empty. Truck runs great other than that. I’ve replaced all the coolant system parts and hoses and still the same disappearing act by the cooling system-