Perhaps you can't use the auto-start/stop feature of the ICE system when the aircon is on? When the vehicle is stopped, something needs to be turning the compre

Perhaps you can't use the auto-start/stop feature of the ICE system when the aircon is on? When the vehicle is stopped, something needs to be turning the compressor or things get hot pretty quick in hot climates. USPS trucks probably benefit from the start/stop system more than any other efficiency feature this new vehicle has.