Why does the ac light flash off and on on a dodge caravan?
Probably low refrigerant level. You can try to reset the
flashing lights on your climate contol panel by turning it on high
and set it to panel and the temp to cold. Then hold the rear wiper
button and the rear wiper washer at the same time for 30 secs. The
top and bottom buttons on the left side. You should see a different
pattern start flashing and feel the air flows change wait about 4-5
mins and then try to hit the AC button. I have also been told to
try setting to defrost/temp to hot and tring again.