I drove to a nearby town today and about 3 miles from my destination, I had a high temp indicator turn on on my 2011 Mini Cooper S. It went away for a couple miles, and when I got into the downtown area, it started to rattle when it was idling. Made it to my destination and I looked at my coolant reservoir and it was empty. After my appointment, I attempted to add more coolant and it leaked out of the tee connected to one of the hoses coming out of the coolant reservoir. I took closer look at it and saw that the tee had snapped off from two of the coolant lines. I had the mini towed home and got a new tee and added about 3/4 gallon of coolant and it sounds like it is running fine now.
I hooked up a bluetooth obd2 reader and it says I have two codes: P13AE & P13A3: "Knock sensor, electrical: Signal input 'A' (& 'B'), short circuit to ground."
I thought I've heard before that knock sensors can sometimes get automatically reset after a certain amount of time of not having knocking issues (which I am guessing could be related to the rattling I heard when it was low on coolant). But before I write it off, I thought I would double-check that assumption.
What should I do? Is it safe to continue driving it, or should I look into replacing the knock sensors?

 

for now make sure your coolant isnt leaking anymore and you get hot air inside the cabin...as for codes, erase and monitor. if they come back, then you can proceed with replacement or further diagnosis.

 

Thanks for the input. I've cleared the codes and drove it around a little bit yesterday. Heater was blowing out hot air like it should and coolant temp got up to about 224F.
When i got in the car today, I smelled a little bit of a coolant smell and then noticed the check engine light was on. So, i turned in my obd2 scanner on my phone and it told me it had a P0597 code (Thermostat Heater Control Circuit Open).
Do you think that could be related? Should I just reset it again? When I was changing the hose tee, I had to remove part of the air intake duct and two of the wires on either side of it seemed a little loose. I pushed them back in, but it seemed like there should have been some kind of retaining clip on them instead of just sliding on. Any insight on that?

 

 

I've read several threads that say 224F is fine for coolant temp in a mini, just as long as it isn't fluctuating a lot. Sounds like you might be assuming it's too hot based on experience with other cars?

 

 

So, I reset the thermostat code, and it comes back each time I read it. Although, at first, it displayed the same code three times at the same time, and now it only shows once (with the word permanent in parenthesis). One site says that a potential cause is a coolant leak, which obviously I had, but have now fixed. I'm wondering if maybe it needs time to figure out that everything is back to normal.... ??? Or maybe there's still something deeper that I need to look at....