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Keyfob not detected, battery dead?


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7 replies to this topic

#1 OFFLINE   howie411

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Posted 02 January 2018 - 07:34 AM

So today my wife's car said KeyFob not detected on her 2013 C-MAX SEL.   Is the battery dead on it?   On my FFH it gives you a notification when the battery is low on the keyfob.  Does the C-max not do this?   And if not short of using the other keyfob or replacing the battery, how do you deal with a situation when you are out and this happens.









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#2 OFFLINE   cr08

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Posted 02 January 2018 - 07:55 AM

If getting into the car and the fob is dead, there is a backup key to unlock it. To start it, there is an indentation in the right side of the steering column. Insert the fob in here momentarily while pressing the start button and it will start.



#3 OFFLINE   howie411

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Posted 02 January 2018 - 09:17 AM

If getting into the car and the fob is dead, there is a backup key to unlock it. To start it, there is an indentation in the right side of the steering column. Insert the fob in here momentarily while pressing the start button and it will start.

 

Thank you, I will let her know.



#4 OFFLINE   Bill-N

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Posted 02 January 2018 - 01:13 PM

If the battery in the fob is original, then it should be replaced.

 

I'm unaware of any fob-battery-low notification on the c-max.



#5 OFFLINE   jestevens

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Posted 04 January 2018 - 10:43 AM

This happened to me twice now both times when I was shoveling snow and clearing the car off with wet gloves, 20F weather.  I replaced the battery in the FOB about six months ago with a new one.  The second FOB also wouldn't work either so it must've been something with the car itself.  I tried to use the emergency key to unlock the drivers door and I could only turn the key to the left and hold it (spring loaded) pulling on the handle wouldn't open the door.  It seemed like I could not turn the key to the right, but there's very little to grab on to with that key, it's just a metal "T" shape with no real leverage outside the lock.

 

It tried it both with gloves on and with bare hands.  By some unknown miracle after trying for about 5 minutes the car eventually finally registered the ground loop by touching the door handle.and allowed me to unlock, started right up without a problem after that.

 

I have the original 12V battery still, last Ford service as of a month ago said the battery status was fine.

 

I wonder if the car goes into some sort of "deep sleep" mode - the Prius used to have an actual switch by the underside of the steering column to turn off the smartkey radio sensing so as not to drain the 12V if you were parking the car for an extended period of time



#6 OFFLINE   jestevens

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Posted 04 January 2018 - 10:47 AM

FYI, if you squeeze the indentations on both sides of the narrow part of the FOB itself the Ford logo decal will pop up enough on the underside that you can pry it up with a fingernail and get to the emergency key that supposedly unlocks the driver's door (some doors covered with a cap to the rear of the handle), but like I said, even after inserting the key in the door I still couldn't get it to unlock.



#7 OFFLINE   jestevens

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Posted 05 January 2018 - 07:03 AM

So it happened again this morning (the weather is actually colder today) - I was able to insert the key and turn it to the right this time - the courtesy lights came on and it immediately triggered the unlock command to open the doors.  You only have a few seconds to get the FOB near the steering column to start the car before the alarm goes off.  I don't know why I couldn't turn the key to the right before, maybe the lock was partially frozen.

 

The FOB works fine now that the car was started and driven.  As for why the car won't initially respond I guess I better ask my Ford dealer about a new battery just to be safe.  I'm not getting any battery minder notices and once the car "wakes up" everything seems perfectly fine.


Edited by jestevens, 05 January 2018 - 10:08 AM.


#8 OFFLINE   Marc Smith

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Posted 05 January 2018 - 12:35 PM

funny,  my 2013 sel fob battery went out last week.  conspirairacy. maybe...  :)  but I did happen to leave my keys in the car in the garage on the coldest night as well.

 

but fob batteries are pretty cheap...

 

made the change...








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