Any help on this?īy clicking Sign up, you agree to our privacy policy.ĭear John: As your dealer said, he will need to have the car in the shop when the temperatures in below 30 degrees to see if the issue is a switch or body module problem. I figure this shouldn't happen on a new car. Once I saw it in the dashboard, on the clear panel where all the information gauges are. I have a new 2014 Honda Accord and have condensation forming on the windows inside the car - mostly on the rear window and sometimes on the glass on the side windows. If you choose the defroster mode the A/C compressor will engage, again this is a dehumidify feature.ĭear Doctor: I read in your recent column of someone having a problem with condensation outside of the car. You may also find the a/c compressor will not turn on when the ambient temperature drops below 30 degrees. You should be able to shut off the a/c with an a/c econ button on the dash. The climate control system is electronic and like other systems performs a self diagnostic health test when first started. One reason for this is to dehumidify the interior, as well as run the compressor while doing a self diagnostic check. Can you explain why?ĭear Norman: On a lot of new vehicles the a/c compressor comes on when the heat is turned on. There is nothing in the manual about this and the dealer's service department tells me this is normal, but can't tell me why the car was designed this way. I thought I was accidentally hitting the a/c button, but realized that this happens only when the car sits idle overnight or for a few hours. Dear Doctor: When I turn on the fan to get heat in my 2015 Chevy Malibu the air conditioning automatically turns on.
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