The BMW system is cleverer than you think

Im pretty certain that sensor can sense the coolant mixture !!! From what Iv heard there's a smaller float switch in there which is dependant on the viscosity and gravity of the mixture !

When I lost some coolant I topped up with water... But coolant light stayed on... Mixture was weak, so added some antifreeze to balance out the mixture and the error cleared once it had mixed properly ?!

Need someone to confirm this feature

Landrover don't want you having a frozen coolant system now do they ? Lol
Easy enough to make a float that works on specific gravity, that's how battery acid used to be checked.
Perhaps for tropical regions where antifreeze is not available LR fitted a different float?
 
Easy enough to make a float that works on specific gravity, that's how battery acid used to be checked.
Perhaps for tropical regions where antifreeze is not available LR fitted a different float?

Thankyou !

Not sure really, don't see why they would fit two different ones.

I think there's two in the tank already positioned next to the magnetic reed switch in the chamber. One for a generel low level and one for the correct mixture
 
Thankyou !

Not sure really, don't see why they would fit two different ones.

I think there's two in the tank already positioned next to the magnetic reed switch in the chamber. One for a generel low level and one for the correct mixture
If there are 2 floats, maybe the one that does the specific gravity of the antifreeze can be turned off in the BCU as an option, you should be able to see if this is the case with your shiny new Faultmate:)
 
If there are 2 floats, maybe the one that does the specific gravity of the antifreeze can be turned off in the BCU as an option, you should be able to see if this is the case with your shiny new Faultmate:)

If there is two floats there's still only one reed switch

Hence getting the same message with low coolant on the wrong mixture
 
draining is easy enough , theres a tap on the bottom of rad and one on the engine block. then just fill her back up to the brim ,take out the bleed screw next to the cap.put cap back on and start engine. watch the air come out of the bleed screw hole. when its stopped bubbling put it back in . job done
 
oh ,i think some peeps have had to bleed it a few times to get all the air out but ive done it a few times and only needed to do it the once
 

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