Weird ICE/EV behavior today
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Active Enthusiast
Joined: Oct 2012
Posts: 136
From: St. Paul, MN
Re: Weird ICE/EV behavior today
Well, I ordered the HV battery heater power supply and power cable today. They should be in next week. I'll report back how everything goes once I get them installed.
Thread Starter
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Active Enthusiast
Joined: Oct 2012
Posts: 136
From: St. Paul, MN
Re: Weird ICE/EV behavior today
for the day is expected to be below zero F. That engine block heater and battery warmer will get a good workout then.
Ridiculously Active Enthusiast
Joined: Sep 2006
Posts: 1,678
From: Beautiful Pacific NW
Re: Weird ICE/EV behavior today
My FEH was really acting weird today. Temps were between 0-10F and several things were happening that I couldn't explain:
- After being fully warmed up (CHT>210F) the ICE would not stay running even with the defroster ON/"in the red zone'.
- HV battery seemed to have lost a lot of charge overnight. SoC was down around 30% this morning after being around 43% when shut off last evening.
- Took a long time to charge up HV battery, probably more than 30 minutes of driving. Even when braking the charging current would only go up to maybe 20 amps and then only for a few seconds. I suspect this was because the battery was so cold?
- Even when finally charged up fully (>50% SoC) and fully warmed up the ICE was kicking in even when just sitting for a minute at a stoplight.
Until this last few days of cold weather the ICE/EV was acting pretty much as expected. I'm just confused
as to why sometimes it doesn't stay EV when it seems it should and then today it wouldn't go ICE when the heater controls were set to defroster.
- After being fully warmed up (CHT>210F) the ICE would not stay running even with the defroster ON/"in the red zone'.
- HV battery seemed to have lost a lot of charge overnight. SoC was down around 30% this morning after being around 43% when shut off last evening.
- Took a long time to charge up HV battery, probably more than 30 minutes of driving. Even when braking the charging current would only go up to maybe 20 amps and then only for a few seconds. I suspect this was because the battery was so cold?
- Even when finally charged up fully (>50% SoC) and fully warmed up the ICE was kicking in even when just sitting for a minute at a stoplight.
Until this last few days of cold weather the ICE/EV was acting pretty much as expected. I'm just confused
as to why sometimes it doesn't stay EV when it seems it should and then today it wouldn't go ICE when the heater controls were set to defroster.Last edited by wwest; Jan 16, 2013 at 08:36 AM.
Active Enthusiast
Joined: Jan 2013
Posts: 175
Re: Weird ICE/EV behavior today
Ford has a US patent that would imply as OAT declines toward freezing and below regenerative braking is used less and less, as a safety measure in order to lower the propensity for loss of directional control. Frictional braking applies to BOTH the FRONT and REAR simultaneously. Just think of it as 4WD but in braking mode. A/C cannot be functional below 32F so most systems disable it. No A/C function, no need to run the engine except to keep the coolant HOT.
Like snow falling during the winter months, Mr. West continues to post on this issue that he has stated incorrectly-as in the past five years. Mr. West remains unable to identify such OAT sensor needed for such a implementation. GPSman1 has posted data-for at least fours years- that disproves Mr. West's theories. It is best to ignore Mr. West and his postings.
Like snow falling during the winter months, Mr. West continues to post on this issue that he has stated incorrectly-as in the past five years. Mr. West remains unable to identify such OAT sensor needed for such a implementation. GPSman1 has posted data-for at least fours years- that disproves Mr. West's theories. It is best to ignore Mr. West and his postings.
Active Enthusiast
Joined: Jan 2013
Posts: 175
Re: Weird ICE/EV behavior today
NOPE! You have not learned your lessons. What part of "not true" do you not understand? No wonder Lexus never hired you to teach their staff.
Ridiculously Active Enthusiast
Joined: Apr 2008
Posts: 895
From: Los Angeles
Re: Weird ICE/EV behavior today
And you are back on mine. What a waste of electrons to read this drivel, and on multiple sites. Apparently some people have nothing else to do but clutter up forums with information of dubious reliability.
Active Enthusiast
Joined: Sep 2010
Posts: 118
From: Near Seattle Washington
Re: Weird ICE/EV behavior today
Once again BillyK provides us with excellent information to improve the FEH experience. Luckily I don't live in a zero degree climate (PNW) but we do get some cold snaps around here. Can someone post the cost (best deal?) for the block heater option? It might not be worth it for me but I'd like to do a Return On Investment analysis. My mileage drops pretty significantly as the temperature drops below 45 degrees.
