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Powerboost not designed for use below -40C?!

Burlworld

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Hey all,

First post here. This was a great resource for researching the purchase of my 21 XLT Powerboost. Now I'm looking for some advice.

First, some context: I live in the Yukon, Canada. It gets extremely cold here, obviously. I was hesitant about getting a Powerboost (1st year model, etc) while living in an extreme climate, and diligently researched this vehicle before purchasing it. I was expecting a marked drop in fuel efficiency during the winter months (check), but figured I could live with that given the other benefits. Nowhere in all my reading, nor at any time during the purchase process with the dealer (dealer was in southern British Columbia - they were fully aware of where I live and the climate here. Claimed to have sold many vehicles to customers from northern territories) was any mention made of any usage limitations based on outdoor temperatures. I've now owned the truck for nearly 2 full winters, and have recently discovered (after a few no-start episodes) through a technical support request put in to Ford Canada through my nearest dealer in Whitehorse, YT, that the the HV hybrid battery is not designed to operate in temperatures below -40C. As in, the truck is locked out and doesn't even attempt to turn over on startup. A quote from the Hybrid/EV tech support in response to the tech support request from the dealer:

"Since we did find the DTC P0AFD (Hybrid/EV battery pack temperature too low) setting when the temperature is below the -40 degree mark, this is suspected of causing the vehicle to be in a no start condition. Within the normal operation and fault conditions of the DTC it does state that the high voltage battery is not designed to operate in temperatures below -40C and that fault sets when the thermistor internal to the HV battery detects it being below -40."

Further context - I have lived in the Yukon for 20+ years and am well aware of how to care for and prep a vehicle for extreme cold starts. This truck has coolant rated to -50C, a battery blanket, block heater, and oil pan heater. All confirmed to be functioning properly.

The Whitehorse dealer suggested I start with contacting the Customer Care line, who can be "quite helpful". Just got off the phone with them, they are apparently just a complaints department with no ability to escalate this or provide anything resembling a solution.

At this point, I am just completely baffled as to how these vehicles are even being sold in Canada (or Alaska for that matter). I realize -40 is an extreme temperature, but this is a temperature reached commonly across the country every winter...are we just supposed to not drive when it gets cold? Can they possibly actually be designed to just not operate below a certain threshold?! How can I be the only one?! This is a work vehicle, and due to the nature of my work, the colder it gets, the busier I get, and the more I need a reliable truck...therefore, it's essentially a $68 000 CAD brick of useless regret sitting in my driveway. Basically I need a fix or I need to sell the truck (to whom though?).

Anyways, I will be contacting the dealer where I made the purchase, and expect a loooong fight, but figured I'd deviate here for a minute in case any of you fellow Ford enthusiasts have any suggestions. Many thanks for reading...
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SteveP150

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Got me on that one. I've had mine sitting outside overnight at -25C and it started right up. But no colder than that, so couldn't tell you on -40.
 

ryanc111

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I have nothing of real value to contribute here, other than -40C == -40 Freedom Units. ?

IMG_0356.jpeg


And holy fuck that is cold.

Hopefully someone smarter, in a colder environment can help out. ?
We were colder than that this winter - had a period of time when the temp was around -50 ambient for a few days. Didn't drive during that time but we did drive it when it was around -30 and while it started a bit hesitantly I suspect that was due to the 12v battery, nothing related to the hybrid system. I did have the engine block heater plugged in through the cold spell I did not have a battery tender on the starting battery.
 

jeffcrum

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People weren't made for -40C. Why in the hell would you have your truck in a place that isn't made for people???
 

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m_bt54

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I have nothing of real value to contribute here, other than -40C == -40 Freedom Units. ?
I had to go use a second converter before I would believe it (and before I saw your reply!)
 

Snakebitten

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Actually it isn't hidden at all.
I'm not saying it's a 5 minute solution, but I bet it is possible to treat it like one of those pan heaters?
 

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Burlworld

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Actually it isn't hidden at all.
I'm not saying it's a 5 minute solution, but I bet it is possible to treat it like one of those pan heaters?
It's crossed my mind, though I'd prefer for my very new and expensive truck not to be a guinea pig for such a test...no idea whether it is advisable to be putting heat directly onto the battery pack, not to mention warranty issues. It would be a lot cooler if I could speak to someone at Ford who has a clue in regards to this...not that they're likely to say "yeah, throw an oil pan heater on there", but I would like to know if this issue is even on their radar.
 

hedge

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Interesting, I have had that temp in wind chill but ambiant was only around -32 a couple weeks ago when I had to go to work. Had no issues, I know batteries don't like the cold but I guess I thought it could just in simple terms disable hybrid mode and act like a regular truck during those times.
 

Zyvin

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So, the powerboost can’t just run in regular ICE mode? Wonder what other “conditions” cause it to not start?

We had 4 days straight this winter of temps below 30F, and people were freaking out, lol
 
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Burlworld

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Interesting, I have had that temp in wind chill but ambiant was only around -32 a couple weeks ago when I had to go to work. Had no issues, I know batteries don't like the cold but I guess I thought it could just in simple terms disable hybrid mode and act like a regular truck during those times.
Yep, it will literally start at -39 and not at -40...it really does seem like a programmed threshold, judging both from my experience and the response from Ford.
 

Tosh

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I've heard of RV people using pipe warmers to keep their Li-Ion batteries above 40F (those battery systems won't charge below 40F)

Here's a youtube video:
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