All,

My truck is a 2018 Raptor 802A and recently, after being hauled across the country, has started acting a little strange on startup. I never noticed this prior to the relocation so I am confident this is a new thing, which I originally thought to be weather or battery related. When I shut the vehicle off at night with the climate control system set to "AUTO" and Temp at ~72, it defaults the climate system to OFF in the morning. However, during the day, the truck will remember my AC and Climate settings with no issues after a restart cycle. I have put the Forscan settings back to stock and cross verified all check sums to be correct via the .abt data from Ford directly. I've reset all modules and done just about everything in the book, including a new battery, to try and get to the bottom of this. I have scoured every forum that I could find with no luck on this particular issue, except for a thread on the Ford Flex forum from 2013 ---> https://www.fordflex.net/forums/viewtopic.php?t=9591

Any ideas? I would love to avoid taking my truck to the dealer, as they always tend to return it worse than when I dropped it off...

**The only progress I have made in resolving this is when I run a reset of the IPC Module via Forscan, the Climate System comes back ON with AC off after recycling the vehicle power. However, after an evening/several hours of the truck being off, it will once again default the climate system back to OFF upon startup.

 

Well, I wish that was the case with my truck, since I always like to shut off HVAC before shutting engine off. But what you didn't say is if when you turn HVAC back on, does it stay at your selected temperature? If yes, that'd be perfect for me. Ha ha. I always use HVAC in manual mode, but if you just press 'auto', it should turn on with your selected temperature. Does it? If it defaults to a different temperature than you set, then there's something wrong. Otherwise, I'd leave it alone, but that's just me . Good luck.

 

It does function fine once I press auto/ or the power button as it will turn it to the settings that I had set previously. The reason I don't like it, is that it's not the way it is supposed to be (defaulting to off) which keeps me awake at night! haha

 

But that's the better way . Hey, if you find out what you had to change in FORScan, please post which values you had, so I can switch my truck to the way your truck is right now . Oh, and if you can also find out how to turn vented seats to off with the engine, it'd be great too. All my current and previous vehicles did that. Hopefully somebody will have an answer to your life-altering problem, brother. Ha ha. Take care.

 

Have you checked for DTCs? Not all DTCs send a warning or set a light.

 

Yes- Have checked through all and found none. I'm trying to compare the .abt hex/code between my VIN and a 2020 VIN via asbuilt hacker to see if the 3.4 upgrade is what perhaps caused it, but I'm not coming up with anything. Thank you all for the help thus far- hopefully we can figure this out in case someone runs into it later on.

 

Does this happen with remote start, regular in-vehicle start, or both? What is your remote start climate control setting in the IPC?

 

So far this is only an issue with a regular in-vehicle start. I have confirmed that the climate on remote start still functions in accordance with ambient air temp as it is designed to.

My remote start climate control setting in the IPC is set to AUTO across all selections.

Right now, I am trying to cross reference the data for a 2018/2019/2020 to see if there are settings unique to a 2020 in regards to climate, that might be due to the 3.4 software which mine would not have come with stock... not sure if this road will lead anywhere though.

 

OK. I have no ideas to help you. Hope you find the issue and let us know when you do.

 

Findings came up empty. If anyone has other thoughts, I am all ears.

It is, in fact, resetting the temperature back to the default 72 degrees every time that I start it back up from the OFF position...