Jump to content

Custom Search




Welcome to the Ford C-MAX Energi Forum


Sign In  Log in with Facebook

Create Account
Welcome to the Ford C-MAX Energi Forum. You must register to create topics or post in our community - but don't worry this is a simple free process that requires minimal information for you to signup. Be apart of Ford C-MAX Energi Forum by signing in or creating an account.
  • Start new topics and reply to others
  • Subscribe to topics and forums to get email updates
  • Get your own profile page and make new friends
  • Send personal messages to other members
  • Create a photo album and post images. . .more.
Click here to create an account now.
 
Guest Message by DevFuse

Get you C-MAX Energi Registered in the official Ford Authorized Registry. More here.


Photo
- - - - -

ICE coming on unexpectedly


  • Please log in to reply
12 replies to this topic

#1 OFFLINE   GlennR

GlennR

    New Member

  • C-MAX Energi Member
  • Pip
  • 74 posts
  • Region:Canada Ontario
  • LocationBrampton
  • My C-MAX:2016
  • Current Vehicle:C-Max Energi 2016

Posted 13 May 2018 - 04:34 PM

For some reason Max slipped into ICE mode when there was lots of battery, no fast speed happening and no climate controls on. I don't know why this happened. It was just the last trip today. I'll keep an eye on it going forward but I wondered if anyone else has experienced this.

 

 









Lose this advertisement by becoming a member. Click here to create a free account.

#2 OFFLINE   spirilis

spirilis

    New Member

  • C-MAX Energi Member
  • Pip
  • 108 posts
  • Region:U.S. Northeast
  • LocationMaryland
  • My C-MAX:2017
  • Current Vehicle:2017 C-Max Energi SE Kona Blue

Posted 13 May 2018 - 06:05 PM

Was the battery in fact completely full? And were you driving in "L" mode?

#3 OFFLINE   stolenmoment

stolenmoment

    New Member

  • C-MAX Energi Member
  • Pip
  • 293 posts
  • Region:U.S. Northeast
  • LocationBoston
  • My C-MAX:2013
  • Current Vehicle:Maxwell Smart

Posted 14 May 2018 - 04:50 AM

I have to drive the first mile or so in D, because heavy regen while the battery is full causes the ICE to start;  I *think* I've read that what's happening is that one of the electric motors is turning the ICE (acting like a starter motor) just to burn off excess juice.



#4 OFFLINE   fotomoto

fotomoto

    Energi Member

  • Moderator
  • 1,221 posts
  • Region:U.S. Southern Plains
  • LocationSouth Texas
  • Current Vehicle:CMAX

Posted 14 May 2018 - 05:13 AM

No mention of what mode the OP was in at the time.  I primarily drive in EV Now mode and it's rare that I run out of EV miles on my daily drive so I usually forget that the car reverts to EV Auto mode on the next start up.  Like stolenmoment, I find the car will use the ICE much more easily with a full warm battery; especially in L and Auto.  

 

Need more info but my guess is the battery was warm and when it is the ICE will come on sooner and easier.  



#5 OFFLINE   fotomoto

fotomoto

    Energi Member

  • Moderator
  • 1,221 posts
  • Region:U.S. Southern Plains
  • LocationSouth Texas
  • Current Vehicle:CMAX

Posted 14 May 2018 - 05:20 AM

  I *think* I've read that what's happening is that one of the electric motors is turning the ICE (acting like a starter motor) just to burn off excess juice.

 

No it does use fuel according to my scangauge but I think this might be a maybe/maybe not issue.  Here's my thoughts:  on the first instance, the ICE will burn fuel because it goes through a warmup phase (regardless of your trip requirements) and lubrication purposes.   After it's warmed up and properly lubricated, the electric motor/generators "may" just spin the ICE to burn off access EV charge when required.  I haven't been able to test this out as I don't have hills here.  You wouldn't need a scangauge to verify, just watch a instant MPG's meter.


Edited by fotomoto, 14 May 2018 - 05:22 AM.


#6 OFFLINE   GlennR

GlennR

    New Member

  • C-MAX Energi Member
  • Pip
  • 74 posts
  • Region:Canada Ontario
  • LocationBrampton
  • My C-MAX:2016
  • Current Vehicle:C-Max Energi 2016

Posted 14 May 2018 - 10:34 AM

Well, it was about 70F outside. The EV range was showing 34 KM. The car was in AUTO and not EV NOW but it wouldn't normally slip into ICE mode at the low speeds we were going at. The car traveled less than two kilometers to go to a shopping plaza so the battery should not have been too hot. It was on the way home that it slipped into ICE mode.  The transmission was in D mode.


Edited by GlennR, 14 May 2018 - 04:30 PM.


#7 OFFLINE   rbort

rbort

    Energi Member

  • C-MAX Energi Member
  • PipPip
  • 3,974 posts
  • Region:U.S. Northeast
  • LocationFranklin, MA
  • My C-MAX:2017
  • Current Vehicle:Cmax Energi Titanium with Moonroof

Posted 14 May 2018 - 05:12 PM

Was the engine warm from before? When was the last time the ICE ran?  I have a good idea what it could be...

-=>Raja.


Edited by rbort, 14 May 2018 - 08:15 PM.


#8 OFFLINE   fotomoto

fotomoto

    Energi Member

  • Moderator
  • 1,221 posts
  • Region:U.S. Southern Plains
  • LocationSouth Texas
  • Current Vehicle:CMAX

Posted 14 May 2018 - 06:48 PM

. The car was in AUTO and not EV NOW 

 

To keep the ICE off as much as possible, use EV NOW.  



#9 OFFLINE   GlennR

GlennR

    New Member

  • C-MAX Energi Member
  • Pip
  • 74 posts
  • Region:Canada Ontario
  • LocationBrampton
  • My C-MAX:2016
  • Current Vehicle:C-Max Energi 2016

Posted 16 May 2018 - 09:19 AM

Was the engine warm from before? When was the last time the ICE ran?  I have a good idea what it could be...

-=>Raja.

Probably a week since the ICE was used and the engine wouldn't have been hot from such a short drive.

 

It hasn't happened again but the latest issue is the Tire Pressure Monitoring System has a fault. Sigh...



#10 OFFLINE   rbort

rbort

    Energi Member

  • C-MAX Energi Member
  • PipPip
  • 3,974 posts
  • Region:U.S. Northeast
  • LocationFranklin, MA
  • My C-MAX:2017
  • Current Vehicle:Cmax Energi Titanium with Moonroof

Posted 16 May 2018 - 10:00 AM

Ok but what does this mean:

 

"the engine wouldn't have been hot from such a short drive."

 

Did the engine run or didn't it run?  if it ran maybe its hot and maybe not, but if it didn't run then its cold.

 

If you run the engine, then when you are in auto mode every once in a while the car will churn the engine around to keep it from cooling down all the way.  This is normal.

 

-=>Raja.



#11 OFFLINE   GlennR

GlennR

    New Member

  • C-MAX Energi Member
  • Pip
  • 74 posts
  • Region:Canada Ontario
  • LocationBrampton
  • My C-MAX:2016
  • Current Vehicle:C-Max Energi 2016

Posted 17 May 2018 - 09:51 AM

Ok but what does this mean:

 

"the engine wouldn't have been hot from such a short drive."

 

Did the engine run or didn't it run?  if it ran maybe its hot and maybe not, but if it didn't run then its cold.

 

If you run the engine, then when you are in auto mode every once in a while the car will churn the engine around to keep it from cooling down all the way.  This is normal.

 

-=>Raja.

 

The gas engine wasn't used to get to shoppiing, It only came on when we were traveling home. So, not hot, to clarify.



#12 OFFLINE   rbort

rbort

    Energi Member

  • C-MAX Energi Member
  • PipPip
  • 3,974 posts
  • Region:U.S. Northeast
  • LocationFranklin, MA
  • My C-MAX:2017
  • Current Vehicle:Cmax Energi Titanium with Moonroof

Posted 18 May 2018 - 06:54 AM

Was there any reason given on the dash or in the MFT screen where it shows the icon of the car and the energy flow, or did you look there?

 

Reasons for the engine coming on are:

 

a) using defrost or heat

b) HVB being full and slowing down with other than brakes (car is smart enough to stop regen while using brakes and not start the engine).

c) Alot of little engine uses causing oil maintenance mode

d) engine being warm from earlier and just churning it for a minute to keep it from totally cooling down.

e) hard acceleration to get out of trouble or merge quick

 

I have experienced a, b  and d, but never for c or e.

 

-=>Raja.



#13 OFFLINE   jzchen

jzchen

    Energi Member

  • C-MAX Energi Platinum Member
  • 503 posts
  • Region:U.S. Pacific Coast
  • LocationArcadia, CA
  • My C-MAX:None
  • Current Vehicle:2018 Honda Clarity PHEV

Posted Yesterday, 07:56 AM

Downhill? Electric engines do not like being run with no resistance against the spinning motor. I had the engine start on a slight down hill slope on the freeway when I was feathering (very slightly pressing) the gas pedal...








0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

Privacy Policy TERMS OF SERVICE ·