2013 535i Coolant Leak

[fmalloy]

Have a strange coolant leak - will find a puddle on the garage floor. Check the coolant level, just a little low. I top it off, and may days or even weeks can go by with no further leak. Then, the puddle appears again. I see no pattern to it, and a cursory look under the hood doesn't show any evidence.

Any ideas?

[ezaircon4jc]

Have a strange coolant leak - will find a puddle on the garage floor. Check the coolant level, just a little low. I top it off, and may days or even weeks can go by with no further leak. Then, the puddle appears again. I see no pattern to it, and a cursory look under the hood doesn't show any evidence.

Any ideas?

Check all the hose connections. I've also read that the coolant reservoir can develop a micro-crack at the seams. Look for a residue as evidence of a leak.