dreaded drained battery
Thread Starter
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Tuned
Joined: Oct 2006
Posts: 412
Likes: 13
From: Great northwest
dreaded drained battery
so this new to me 2011 has a 2.5 amp draw. have been checking and can not find it.
I removed all the fuses in both panels one at a time, and it still has the test light lit up at the negative cable to battery. i was checking to see if the dash was still lit, or if i could see that in the day light. and i am not sure about that.
I did notice that when i turn the key off, the tach and speedo drop below 0, and then about 15 seconds later, when the blue lights turn off, they jump back up to zero. is this normal? or should they stay below zero, and the dash is powering back up for some reason.
I removed all the fuses in both panels one at a time, and it still has the test light lit up at the negative cable to battery. i was checking to see if the dash was still lit, or if i could see that in the day light. and i am not sure about that.
I did notice that when i turn the key off, the tach and speedo drop below 0, and then about 15 seconds later, when the blue lights turn off, they jump back up to zero. is this normal? or should they stay below zero, and the dash is powering back up for some reason.
Laughing Gas
Joined: Dec 2010
Posts: 1,200
Likes: 45
From: Timbuk3, MI
Known (but not limited to) causes of battery drain ...
- LEAVING THE KEY IN THE IGNITION. *TAKE IT OUT BEFORE LEAVING THE VEHICLE. <<<<<
- leaving devices plugged-into the electrial recepticles. *They're ALWAYS hot. <<<<<
- central timer module (component of BMS) turning on by itself intermittently. *Part of the Body Control Module.
- back-up camera harness short. - http://www.fordraptorforum.com/f7/mo...harness-41847/
- faulty ignition switch. (key loose in) <<<<<
- faulty shift lever micro-switch. - http://www.f150forum.com/f38/dashboa...2/#post3825056 <<<<<
- faulty door -closed- switch.
- BMS was not recalibrated after applying the ssm4475 - http://www.f150forum.com/f38/radio-d...0/#post3951468
- software calibration issue with the BMS. http://www.f150forum.com/f38/radio-d...0/#post3962167
- the sync option causing a draw/dead battery. *First check for codes in the APIM. TSB 9-14-3
- central timer module turning on by itself intermittently. *Part of the Body Control Module.
- bad ignition switch. - http://www.f150forum.com/f38/dead-ba...4/#post3997086
- BCM REPROGRAM for SSM 44750. *Changes the low voltage threshold.
- the mirror cover on the passenger visor does not close causing the light to stay on - http://www.f150forum.com/f38/battery...1/#post4160675
- Ford had a recall on 2011 f150's for bcm failures. NHTSA 10V659000
- ... IPC reprogram which had fixed some trucks and they have also resoldered instrument cluster solder joints and replaced clusters to fix others. - http://www.f150forum.com/f2/another-...3/#post4328042
- bad instrument cluster - http://www.f150forum.com/f38/need-he...9/#post4331565
- three wiring harnesses, one of which has been mentioned here, the C405 connection. I believe this is the rear camera, tail light harness. - http://www.f150forum.com/f38/need-he...9/#post4355870
- CHMSL pinched wire - http://www.f150forum.com/f38/battery...9/#post4435255
- broken, chafed trailer wiring harness plug short.
.
Thread Starter
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Tuned
Joined: Oct 2006
Posts: 412
Likes: 13
From: Great northwest
i do not know how old the battery is. i put a charger on it separate from the truck. after it was charged, i am now at .27 amps. and a steady 0.27.
I have read that list in multiple places. am i right to assume that the ones with the arrows are more likely to be the issue? also i notice that wen i put the key in, if i do not turn it, the power seat moves forward and backward like i am putting the key in and out. would that line up with that being the cause?
maybe because the battery was so low i was getting a lot of the BMS cycling, and making my fuse test not so valid?i think i will put a new battery in it, and then check it. the truck is new to me, it is a motocraft battery, but no idea how old it is.
If i have a good battery is 0.27 normal?
I have read that list in multiple places. am i right to assume that the ones with the arrows are more likely to be the issue? also i notice that wen i put the key in, if i do not turn it, the power seat moves forward and backward like i am putting the key in and out. would that line up with that being the cause?
maybe because the battery was so low i was getting a lot of the BMS cycling, and making my fuse test not so valid?i think i will put a new battery in it, and then check it. the truck is new to me, it is a motocraft battery, but no idea how old it is.
If i have a good battery is 0.27 normal?
Laughing Gas
Joined: Dec 2010
Posts: 1,200
Likes: 45
From: Timbuk3, MI
blackestate ... am i right to assume that the ones with the arrows are more likely to be the issue?
also i notice that wen i put the key in, if i do not turn it, the power seat moves forward and backward like i am putting the key in and out. would that line up with that being the cause?
It's also a good ROT (Rule Of Thumb) to turn-off the radio, HVAC, as well unplug anything from the 12V receptacles, and turn-off/disconnect any after-market electrical add-ons BEFORE turning-off and removing the ignition key. *Would also consider turning-off the headlights' auto-lamp (but that's just me).
And in doing all this, since purchasing my 2011 FX4 new in Oct/2011, have never had a BMS issue and still have the original Motorcraft battery.
.
Thread Starter
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Tuned
Joined: Oct 2006
Posts: 412
Likes: 13
From: Great northwest
I found a video that said that i needed to set up the amp check and wait 45 min to an hour so all modules would be a sleep, after 1 1/2 hours the amp reading is around 2 mA. so i think that is good. i left the battery disconnected, and will check it in the morning.
i do not use the auto lights, and do not have anything plugged into the outlets. and the truck is stock, just new to me.
There is a sticker on the side of the battery that says 9/14. guessing that is the MFG date.
hoping that it is just the battery i will update with what happens.
Thanks
i do not use the auto lights, and do not have anything plugged into the outlets. and the truck is stock, just new to me.
There is a sticker on the side of the battery that says 9/14. guessing that is the MFG date.
hoping that it is just the battery i will update with what happens.
Thanks
More Turbo
Joined: Apr 2009
Posts: 588
Likes: 0
had a problem with batt. going down r/r then again with in 10 days had to repl. batt again? finally took truck to dealership though i had a problem after they r/r the pwr. steering gear it quit ford shop said i had tow bad batt. they r/r the 3rd one and reset the batt montier? said that was drain the batt. that i r/r we will see
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Laughing Gas
Joined: Dec 2010
Posts: 1,200
Likes: 45
From: Timbuk3, MI
oldfordcoupe ...
HINT/TIP: Put your vehicle information (year, model, cab, trim, engine, wheelbase, _x4 drive, mileage, modifications, etc., etc.) in your signature -OR- provide it in your posting(s).Edit Signature
Without capitalization, punctuation along with misspelling the post is difficult to read and understand. 
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More Turbo
Joined: Apr 2009
Posts: 588
Likes: 0
well the saga continues the batt issue with my 2014 f150 now it has been one month when this all started it was with a advance trac warning plus no power steering. towed to dealership r/r power steering gear? they said all good next day slow to start plus no rear camera three days later batt. down no start, warnt. good on batt repl. same it lasted almost a week, r/r batt agin lest than week later batt down again. jumped truck off took to ford dealership complained about last 3 batt. they had it 3 days they r/r batt again adj. batt monteier? said it was good . last sat truck no start. thusday had it towed to dealership told the to fix it talker to service mgr. gave me rental to drive waiting for call????
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