Jump to content

Custom Search

Welcome to the C-MAX Hybrid Forum

Sign In  Log in with Facebook

Create Account
Welcome to the C-MAX Hybrid 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. Here's some member benefits:
  • 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 photo albums and post images. . .more!
Click here to create an account now
Guest Message by DevFuse

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


2013 C-Max completely dead

  • Please log in to reply
22 replies to this topic

#21 OFFLINE   obob


    C-Max Hybrid Member

  • C-MAX Hybrid Member
  • 712 posts
  • Region:Decline
  • LocationUS
  • My C-MAX's Year:2013
  • Current Vehicle:C-MAX SE

Posted 31 March 2018 - 08:22 AM



As I recall, Plus 2 Golfer has posted doing it or that it is possible.

Edited by obob, 31 March 2018 - 07:39 PM.

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

#22 OFFLINE   charlesashurst


    New Member

  • C-MAX Hybrid Member
  • 1 posts
  • Region:Decline
  • Locationlogan utah
  • My C-MAX's Year:2013
  • Current Vehicle:energi

Posted 16 May 2018 - 01:46 PM

Me too. I have a Ford CMax Energi that 3 times over about a year when I go to drive it, it's completely dead.  Here's what I've gathered from the internet so far, which please correct me if it's wrong:


1. Lots of Energi owners are having this problem.

2. Two possible cause of the problem: a. FOB battery dead - fix is to insert FOB into steering column as per instruction manual. b. Low voltage battery has gone dead.

3. The Low voltage battery going dead problem is caused by a defective ACM, which draws 400 mA from the low voltage battery until it goes dead, whereupon the low battery needs to be replaced, because once any lead acid battery (low voltage battery is lead-acid) is deep discharged, it's ruined. (Ford technician: Removed Fuse # 79, 400 mA draw down went away. Fuse 79 powers ACM and FCIM. Disconnecting FCIM: no change. Disconnecting ACM: 400 mA draw down goes away.

4. The fix for the low voltage battery problem is replace the low voltage battery and also the ACM (audio control module).

  • ptjones, obob and kyledamron like this

#23 OFFLINE   jestevens


    C-Max Hybrid Member

  • C-MAX Hybrid Member
  • 291 posts
  • Region:U.S. Northeast
  • LocationPennsylvania
  • My C-MAX's Year:2013
  • Current Vehicle:C-MAX SEL Hybrid

Posted 17 May 2018 - 06:13 AM

So after all these years they finally found the problem..nice.  Shame they are trying to sell the EcoSport instead..

  • obob likes this

Custom Search

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

Privacy Policy TERMS OF SERVICE ·