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22/03/2021 7:38 pm
Topic starter
I drive a 2017 Navigator. I was out of town for 4 days. I got back yesterday and my battery was dead. It's only a few months old, and it's sat longer than that without dying. So, I replaced the battery and now the air conditioner isn't working. The blower turns on, and the compressor engages, but it only blows warm air (in the front and the back.) The HVAC module doesn't have any codes. It seems very strange to me. What do you think?
Thanks very much.
1 Answer
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22/03/2021 8:29 pm
The battery might have died from a parasitic draw from an ungrounded circuit. If you're so inclined, get an electrical schematic and trace the wire, ground and relays to and from the HVAC circuits. Alternatively, have a diagnostic mechanic do it.
