Thanks for this, and the video, it's dead on what I'm seeing. Not FORM, not EMU, but the CHOC issue. I couldn't find Chris Hall's "definitions" but I did see a thread started by Chris on a Facebook forum that had some interesting comments by a Jon Ward:Hi Everyone – I started this thread 2 months ago and sadly, have made very little progress. Lots of Jeep Wave cases opened and closed and escalations to Jeep Engineering across multiple dealerships. One thing that I have validated with certainty is that Jeep has not trained the dealerships on the 4xe and has not equipped their techs to troubleshoot. To address this, I have created several videos in my 4xe to show the issue and in the 4xe’s of my friends to show properly working 4xe’s as most dealers don’t even have a working 4xe onsite to compare. There seems to be a growing number of people in this forum and over on the Facebook 4xe Fans group that have the Electric Mode Unavailable Cabin Cooling or Heating Issue. There are even more that have the FORM issue. It can be quite confusing, so I have posted one of my videos showing the Cabin Cooling or Heating issue here:
Take a look and see if this is what you are seeing. Please note that this issue seems to be slightly different for everyone: different temps, length, MPG, timing between this and FORM, etc. If you have CHOC, best thing to do is call Jeep Wave to open your case and get to the dealership asap.
P.S. Chris Hall has a great post on Facebook about how we should all refer to these issues and there is a great pinned post about the expected behavior of the Wrangler 4xe in colder temps. Definitely check it out.
Electric Mode Unavailable Cabin Cooling or Heating Issue = CHOC
Fuel Oil Refresh Mode = FORM
Electric Mode Unavailable for no apparent reason = EMU
I struggled with this error for weeks - back and forth with the dealer, tinkering with all the settings and HVAC, etc - and just got it resolved. I’m up in Ottawa, Canada and it gets very cold here, so at first as winter hit I just assumed the cold outdoor temps were to blame. But after parking underground in a heated garage and still getting the same error I knew something was wrong. Turns out there’s a special part in the hybrid system to heat the big battery, keeps it at an optimal run temp. Mine ended up being broken (took the dealer days to figure it out). Then, had to wait about a month for the new part because yada yada supply chains. Now, even with temps that don’t get above freezing, it’s working very similarly to when I first got it in the summer. So all in all I feel your frustration! Could be worth suggesting to your dealer if it’s still an issue.
Jon Ward what’s the part? Lot of dealers still have no clue how to diagnose these. Telling them exactly what to look at will likely work better.
Gregory Michael seems to be called Heater 08-015-020 with part number 68443445-AB
@JeepCares didn't seem to be able to find other cases on this topic despite all the folks on this thread that claim they have cases open. My guy Nelson was extremely nice but could only find the "this is normal it's winter" canned response.