2011 Ford Flex Intermittant Electrically Dead

duesey8

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#1
2011 Ford Flex, standard V-6 and typical equipment, and 9000 miles with no problems, suddenly won't start one morning. No buzzer, no lamps on the instrument panel, nothing; just like the battery had been removed. Jump it off and it took about 20 minutes before it finally cranked and started. It did this twice, so we jumped it off and took it to the Ford dealer. They could not find anything wrong with it, so we went and got it. So far, it has not done this again in three days. Advice?
 

stu

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#2
Let Ford figure it out. Don't try second guessing.

You start poking around and you could fry something.
 
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#3
And void the warranty.

So how long did the car sit before you tried starting it? Did they do a standby current check? Was the vehicle sitting out in the rain? Did they do a capacity test on the battery? One major discharge like that, can lose half the rated capacity. Was the battery ever ran down before?
 

duesey8

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We don't know what the Ford dealer checked. They said they could not find anything wrong with it so come get it and when we did it started. The battery has never been run down. We also are not working on it, we wondered if this was a problem someone else had seen in case it happens again. Thanks!
 

stu

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#7
TSB 11-6-18

06/24/11

DRAINED BATTERY WITH IGNITION SWITCH OFF AND KEY IN IGNITION

FORD:
2011 Flex

ISSUE
Some 2011 Flex vehicles may experience a battery drained concern with ignition switch off and the key being left in the ignition cylinder for extended periods of time (like overnight). This is due to the instrument cluster remaining awake based on the software strategy. If it has been confirmed the customer leaves the key in the ignition cylinder for extended periods of time the instrument cluster will need to be reprogrammed.

ACTION
Follow Service Procedure to correct the condition.

SERVICE PROCEDURE

If it has been identified that the customer does not leave the key in the ignition cylinder for extended periods, do not continue with this article. Refer to Workshop Manual (WSM), Section 414-01 for normal diagnostics.

1. Reprogram the instrument cluster to the latest calibration using IDS release 73.03 or higher. This new calibration is not included in the VCM 2011.5 DVD. Calibration files may also be obtained at the website.

WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT : Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATION DESCRIPTION TIME

110618A 2011 Flex: Reprogram The 0.3 Hr.
Instrument Cluster (Do Not
Use With Any Other Labor
Operations)

DEALER CODING
CONDITION
BASIC PART NO. CODE
10849 04
 

duesey8

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#8
That has to be it. it has not happened again, so the dealer must have done this.
Thanks! fixed
 

kev2

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#9
Do you leave the key in ignition ?

seams intuitive that would be a NO NO