In a hurry last night I just dumped 50% coolant/50% water into the reservoir when an add coolant light came on. I did this with the bleeder cap and radiator cap on - just filled the reservoir.

I realized very easily in the morning that you're supposed to have the bleeder cap off while filling the radiator and not to fill from the reservoir.

Now I have the reservoir with too much coolant, the buzzer and add coolant light still going off.

What do I need to do now? I'd rather not have to flush the radiator as it will be a pain in the *** without jacks/jack stands/ramps/lift. Thanks in advance,
Dan

 

You can remove the radiator cap, put a short tube on the overflow bottle vent and blow some pressure on it to push the coolant back into the radiator.
It's kinda silly, but it works.

 

Well turns out I'm leaking coolant as well. I left the reservoir be and filled the radiator again. Turns out it just pours out eventually...
Now it's in some shop being checked out for free. I'd like to get it fixed asap so I'm not going to diy.