LOW state of battery charge,and a bad COOLING FAN SWITCH or RELAY< or coolant level too low and NOT immersing the temp sensor! NOT TOO SERIOUS! Try jump starting engine, or removing the battery and having it charged up at AUTO ZONE! If coolant is disappearing, check your WATER PUMP and leave papers under car over night to see! USE CAN OF GUNK ORANGE engine cleaner and power spray engine OFF!! Focus on the space between the radiator and the A/C condenser where leaves, bug bodies, fuzz, feathers and paper have collected since NEW! This inhibits good AIR FLOW around engine! Be sure you are using only the factory coolant and NOT PRESTONE which can eat up gaskets!! You can remove spark plugs to see if they are COOLANT SATURATED! Sometimes HEAD BOLTS can over stretch and all you need are NEW ONES! A set is about $40-50. and you need a TORQUE WRENCH to finish the job! <
The way to find out if Harry is right is to remove the spark plugs and see if it will turn over. You have given info that would indicate you have warped the head and the gasket failed but I don't think so. Pull the plugs and find out. The over heating could be because the cooling fan is not working. Turn on the A/C switch without the engine running and the key on the fans should come on if so I'm going with Harry. If not you have found the reason for the overheat. As for the clicking when you try to start I need to know if it is only one click or rapid clicking? One click and a humming sound, Harry is on the money. A rapid clicking, dead battery.

well you had to have a mini, now you have a mini with head problems lol. you dont have an extra 2 gallons of coolant like the old days, it had just enough to balance, HAD till it got hot the first time.

i dont care what senid says, coolant in the cylinder cannot be compressed, so no battery or starter will turn it over without breaking ****!

you can fix that

call car service

power suplay are problem

My 2006 mini cooper s has a leak on the coolant tank instead of putting coolant in we just started putting in water now its over heating every 3 miles. Is my head gasket blown. No sign yet of milky cloudy things in my oil or white smoke in my exhaust. Just confused why its over heating and now wont start. Please some one help me.