The owner of a 2012-13 Dodge Durango or Jeep Grand Cherokee with a remote start system and dual-zone or three-zone air conditioning system may come in with a complaint that his air conditioning system won't turn on when the switch on the control head is activated.
If he does, start the vehicle in the conventional manner (using the start button) and try to turn on the A/C system. If the compressor clutch engages, shut the engine down. Then restart the vehicle, only this time using the remote start feature on the key fob.
If the A/C system still won't work, you're dealing with software anomalies in the ATC module.
According to Chrysler, the problem only affects vehicles built between Jan. 16, 2012 and Aug. 8, 2012 and can be rectified only by reprogramming the ATC module with updated software. Check with a dealer for the specifics of the flash.