yea there is another dealer i will try. I also get that cold shudder from time to time under 20mph and accelerating i wonder if this TSB is going to fix that.What the heck? Can you go to another dealer nearby?
FYI Just got on my app and I have not had the TSB done for my hybrid, but it now shows the horn/lights button on the app.well I didn’t had it and when they proceeded to updates the modules, the horn and lights icon appeared into the app.
in a local group, some people with ecoboost have the horn and lights icon after doing the tow brake recall.
So I got my truck back today. They did the software update and told me no more rough idle. What I have noticed immediately that the gas engine runs now much more frequently than before. I only drove few miles but I have the impression the gas mileage went down significantly. I have to drive more to get a better idea. Fact is that my distance to empty went down by 50%. But other people reported about this too and said that it went back to normal again.I had some sort of weird rough idle here and there. It felt like someone is pushing the gas pedal and would let go while the truck was not moving forward. It was only a thing in winter but I have not experienced it all the time. I took it to my dealership last week for oil change and they found the service bulletin but asked me to come in this week and leave the truck there. This morning I went there to drop off the truck and there was another service advisor. He told me he cant find anything under my VIN number??? I went inside and got the service advisor from last week and he took the truck in and took care of it. He texted me later this afternoon and told me they need to do some road test and will give me back the truck tomorrow.
I am not really sure if getting this taking care of was the right thing to do. I didn't have really a big issue and sometime dealerships cause more damage than fix things. On the other hand, the issue seem to be real and I rather have them look at it before something blows up. Anyway, I will keep you all posted, lets see how it goes...
I had mine done last week but in the report they say that they only updated the PCM. I am wondering if this half A** update without updating the other modules makes things even worse because the modules are not synchronized as they should. Did anyone else had only the PCM updated? In all the other posts it seems they updates several modules. I am wondering if I should go back and have them update the other modules too. Thoughts?Edited:
For what it is worth, I picked the Mav up Friday night after the TSB 22-2124 update for the cold start surging idle issue and drove it home. I had it in Normal driving mode the whole time and I am pretty sure I can back up the comments about the braking system feeling smoother after this update. I have put around 40 or so additional miles on it this last weekend and it really does seem quite a bit better.
It seems this TSB may have touched more than just the cold idle issue. The service order from my dealer stated that the TSB 22-2124 - operation MT222124 included the reprogramming of the PCM, SOBDM-C, BECM, and BECMB. Also, my FordPass App now has a Horn & Lights button that was definitely not there until the update was applied.
This TSB was for Maverick Hybrids built on or before March 9th, 2022. Anything after that should already have the update. The update is dealer only and cannot just be downloaded. https://www.mavericktruckclub.com/f...-hybrid-idle-surge-fix-software-update.12761/
Final note: If you are in the hybrid build date range for this TSB(all hybrids built up through 3-9-22) and you go to schedule the work with your dealer, they are instructed to ask you if you have had the idle surging issue. How you answer that question may affect whether or not they are willing to perform the TSB.
I propose that the "fix" involves limiting the rate of charge to prevent hvb damage and not actually overcharging the battery. The rate of charge of lithium ion batteries is directly related to the temperature of the battery. A battery at say 40° will not accept as many amps as a warmer battery and is true for any temperature up to the self destruct temperature (that's why they control the operating temperature of the battery. If the battery is below the minimum operating temp they will heat it and when it get above the maximum preferred temperature they will cool it. In any case the update was apparently to better control the ice while it was cold.I wonder if this “fix” subjects the battery to overcharging? I wonder how they addressed this.