wes8398

Happy to contribute! I did all those same things when I was trying to figure this out myself. Thank God for scrap yards!

I thought all the pics posted, but apparently not... here goes again...

I'll see if I can dig them back up, but I'm not sure the forum will allow me to post 'em... we'll see

From another post, but this is how I fixed my wonkey hvac issues: UPDATE: PROBLEM SOLVED!! (thanks to a few regulars here who seem to find the time to contribute to EVERYthing) I went to a scrap yard that had a handful of 1st gen Edges in their yard last week, and managed to grab 4 different HVAC modules (along with some replacement rear parking sensors) for $75. Picture 3 is of the faulty original unit that was replaced with one of a different part #, but luckily fully compatible with all the options in my Limited (ambient lighting, automatic hvac control, dual climate control, heated seats, etc). *Note in picture 4 that 2 of the modules I retrieved were missing a receptacle. This was likely due to those vehicles not being equipped with certain options (heated seats? ambient lighting?)* After having the opportunity to tear into the scrap yard vehicles without any regard for their well-being, I devised myself a plan to easily replace the module. The first step of the process was to remove the side access panel to the dash/door vent. After opening that up, as you can see in the pic below, I used an angle grinder to cut a little access hole in the "blank" of the dash piece that lays UNDER the removeable kick panel. From these two access points, I was able to remove the plastic push-rivet that holds the vent tube to the module frame/mount; and then remove the upper portion of the vent tube entirely. After that, it's a matter of one retaining screw, and then unplugging the connectors from the module to drop it out and swap. With everything back together, you'd have no clue I was ever in there. Now the fan, lighting, etc... everything... works perfectly. No programming needed, either!

UPDATE: PROBLEM SOLVED!! (thanks to a few regulars here who seem to find the time to contribute to EVERYthing) I went to a scrap yard that had a handful of 1st gen Edges in their yard last week, and managed to grab 4 different HVAC modules (along with some replacement rear parking sensors) for $75. Picture 3 is of the faulty original unit that was replaced with one of a different part #, but luckily fully compatible with all the options in my Limited (ambient lighting, automatic hvac control, dual climate control, heated seats, etc). *Note in picture 4 that 2 of the modules I retrieved were missing a receptacle. This was likely due to those vehicles not being equipped with certain options (heated seats? ambient lighting?)* After having the opportunity to tear into the scrap yard vehicles without any regard for their well-being, I devised myself a plan to easily replace the module. The first step of the process was to remove the side access panel to the dash/door vent. After opening that up, as you can see in the pic below, I used an angle grinder to cut a little access hole in the "blank" of the dash piece that lays UNDER the removeable kick panel. From these two access points, I was able to remove the plastic push-rivet that holds the vent tube to the module frame/mount; and then remove the upper portion of the vent tube entirely. After that, it's a matter of one retaining screw, and then unplugging the connectors from the module to drop it out and swap. With everything back together, you'd have no clue I was ever in there. Now the fan, lighting, etc... everything... works perfectly. No programming needed, either!

UPDATE: PROBLEM SOLVED!! (thanks to a few regulars here who seem to find the time to contribute to EVERYthing) I went to a scrap yard that had a handful of 1st gen Edges in their yard last week, and managed to grab 4 different HVAC modules (along with some replacement rear parking sensors) for $75. Picture 3 is of the faulty original unit that was replaced with one of a different part #, but luckily fully compatible with all the options in my Limited (ambient lighting, automatic hvac control, dual climate control, heated seats, etc). *Note in picture 4 that 2 of the modules I retrieved were missing a receptacle. This was likely due to those vehicles not being equipped with certain options (heated seats? ambient lighting?)* After having the opportunity to tear into the scrap yard vehicles without any regard for their well-being, I devised myself a plan to easily replace the module. The first step of the process was to remove the side access panel to the dash/door vent. After opening that up, as you can see in the pic below, I used an angle grinder to cut a little access hole in the "blank" of the dash piece that lays UNDER the removeable kick panel. From these two access points, I was able to remove the plastic push-rivet that holds the vent tube to the module frame/mount; and then remove the upper portion of the vent tube entirely. After that, it's a matter of one retaining screw, and then unplugging the connectors from the module to drop it out and swap. With everything back together, you'd have no clue I was ever in there. Now the fan, lighting, etc... everything... works perfectly. No programming needed, either!

I'm new to Forscan (although, not programmers like it, as I did plenty on my Audi via something similar). I did a general scan and nothing related to the HVAC came up. I didn't have much time and also don't think I have the right Bluetooth / OBD adapter for the MS CAN stuff.

Thanks for the reply. I've already obtained the proper part number - BT4Z19980-W - but what I'm wondering is if I can broaden my search to units with different suffixes - like BT4Z19980-*U* or ...*R*, etc which are only differentiated by options that are programmed into it like ambient lighting, heated seats, etc; and simply reprogram it for the options in my particular vehicle (through Forscan). Being able to do so would make locating (an affordable) part from a local wrecker much easier. And the reason I'm onto replacing this particular module is because I've been pointed there by my troubleshooting and advice thus far. I've swapped 3 different APIMs and programmed them appropriately... No dice. I've replaced the usual suspects for fan control issues, etc... No dice. The issue I'm trying to resolve is best described in this quote from another poster: "I have a 2011 Ford Edge Limited. I'm having an electrical or computer problem which I can't seem to figure out. This may or may not have to do with the SYNC display, but that is where most things are noticeable, so that's what I'll be talking about. The interior cabin fan runs sporadically, turning off and on. The levels of blowing work fine. On the display itself, the clock and temp blink on and off. The ambient cabin lights blink on and off. So basically, the cabin ambient lighting, fans and clock all turn off and on. Everything else works. The radio and CD play fine. I can bluetooth to my phones and play music without a problem (at least no more of a problem than SYNC normally has). My navigation works fine. My air conditioning and heat both work, though the fan that blows them is the one that turns off and on. Also my temp within the cabin doesn't work, so I either have to set the temperature to LOW or HIGH to get any real change in temperature in the cabin."

Hi everyone. I'm trying to find time to get my wife's hvac system working again, and I think my next attempt is going to be replacement of the hvac / dash module / control. This is seemingly a less-known module that lies within the driver's side dash; above the emergency brake release. My questions are surrounding the replacement module, which I hope to get from a scrap yard. I've google'd part numbers and such for WAY too long, and can't seem to determine if *any* hvac module with a matching part number will work, or if I *have* to get one with a matching last character so to match the options this particular edge has (ambient lighting, dual zone climate, heated seats, etc). The part number I've so kindly been directed to is BT4Z-19980*W*, but there are many other options which the only difference seems to be what options it's programmed for. Is it possible that I don't need to be so selective about which one I need, and can instead program my "new" one appropriately using Forscan? Thanks in advance!

Also... now that I'm looking at parts/options... do you happen to know if I *have* to get the exact matching part number, including the suffix letter which seems to discern options like with or without ambient lighting, dual zone climate, heated seats, etc...?

Man, you're awesome!! Are these by any chance publicly available to search out myself?

I'm going to be working on it again soon, and plan to report back. Just need to get to a scrap yard and find a replacement hvac module (or two) to swap in. Hoping I can grab it from a u-pick yard so I can learn how to access it while I'm digging it out. That gift posted above is absolute gold though.

I didn't get notified of the responses here... glad I happened to check in!! After replacing the APIM a number of times, as well as just replacing the blower motor resistor, my next go is this mysterious hvac control module (which I've come to find out is also called the "dash control unit"). I starting checking things out briefly tonight, and it looks like there's going to be some serious trim removal going on. I wasn't much looking forward to winging all that on my own; but Haz just KILLED IT with that info dump has absolutely made my night. I'm about to delve into some of it now. Thanks SO MUCH, Haz!!

Thanks for chiming in. I have come across that post in my Googles a few times; but when I try to find the actual part to purchase, I keep coming up empty. Same when I try to find a diagram/schematic locating a "heater control module", "ac control module", and all similar terms. Nearest I've been able to find is the blower fan control switch. *shrug*

Blower motor switch, you say? After wasting my time with replacing the APIM, I think I have my next guess...