DMax AC Malfunction

I had a similar issue in my DMax, although a different model year. Check the connections to the rear ventilation. Sometimes they come loose, or the plug gets corroded. It's like a loose wire on a lamp – sometimes it works, sometimes it doesn't. Does the air work at all, or just not as cold as it should be?

Thanks for the quick reply! It's completely dead, not even a little bit cool. Just warm air blowing through. Where exactly should I be looking for these connections? Is it something easily accessible, or do I need to start dismantling half the interior?

If it's completely dead, then it's more likely a full disconnect. Honestly, without the right diagnostic tools, it's difficult to pinpoint. It's likely that the connection is defective. You could try to find them yourself, but given the symptoms, I would recommend taking it to a workshop. It will save you time and potential further headaches.

Thanks for the advice. I took it to the local garage. Turns out you were spot on; the cable for the rear ventilation flap was indeed defective. They replaced the cable and plug, and the air con is now working perfectly again. Cost me 95€ including labor. Thanks for pointing me in the right direction!