Bmw 3 series no hot air
Coolant light came on so I topped it up, but I was
rushing before work and (stupidly) never put the
cap back on and drove to work on the way back
from work the light came back on, checked it and
relised my mistake, with no coolant left at all! then
top the coolant up again, car is running fine apart
from the heater has now stopped blowing hot air,
what can I do?...
It's a 1999 bmw 3 series
Thanks