A/c Controls

Can anyone tell me how to reset the A/c Heater controls on a 1999 caravan and also what may cause the A/C light to blink?

Check out weird blinking lights a few post down

did you have a dead battery or lose power for a couple of days? I had mine go completely out when I changed my motor and had to reset them when I got it back together. You have to hold the windsheild button and another one. I will try to find the procedure and post it.

here you go from an earlier post by someone here, make sure the car is running.

When you have a dead battery, it screws up the calibration of the A/C control system. (For some reason, disconnecting the battery usually does not cause the problem, but a low or dead battery does.)
In order to recalibrate, this is the process for a 1998:

CALIBRATION/DIAGNOSTICS TEST ENTRY
TO INITIATE TESTS:

* Set Blower motor ON HIGH
* Set Mode position to Panel
* Open all A/C outlets
* Set Temperature to Cold (Both slide pots if equipped)
* Depress WASH and REAR WIPER button simultaneously for 5 Seconds (Until all LED's light)

RESULTS:

* All LED's will turn on for 5 Seconds
* Calibration Test is running when REAR WIPER and INTERMITTENT are alternately flashing. Cool-down test is running if A/C and RECIRC are alternately flashing.
* Acceptable result is REAR WIPER LED is the only LED flashing. Push Rear Wiper to exit.

That should do it. If not, post again and we will try to help.
http://www.automotiveforums.com/vbulletin/images/statusicon/user_offline.gif http://www.automotiveforums.com/vbulletin/images/buttons/report.gif (http://www.automotiveforums.com/vbulletin/report.php?p=4139022)