F-150 battery drain

30

Asked by Guru29BV May 09, 2017 at 01:46 PM about the 2000 Ford F-150 Work 4WD Extended Cab LB

Question type: Maintenance & Repair

My 2000 F-150 has had 2 new batteries in
the last 3 months.  Parasitic drain Is
certain.  My amp meter fluctuates between
.05 and .01 amp.  I disconnect the negative
battery terminal and the cluster relay #2 in
the cab fuse panel alternates on and off.  
To my knowledge nothing is being
activated.  KOEO.  Brought the alternator
in to have it checked.  They put new
regulator in it.  Problem is still there.  
Battery dropped from full charge 12.8V to
11V in 24 hrs.  Anybody have ideas? We

7 Answers

30

Ok! Gotcha I'll check that out and get back. The #2 relay (instrument cluster) I think is being fed juice from a previous auto start that was remove (probably didn't work and was badly connected). But I'll do the sequence of checks as you described. Thanks Tennisshoes :-)

30

Well I disconnected the alternator and still get that blinking relay #2 under the dash. I got rid of all the remote starter wiring and rechecked. Same same. Then I pulled one plug at a time under the dash and still same same. Even unbolted harness to steering column and no change. I'm starting to wonder if this cluster relay is supposed to be on all the time? I switched with #1 relay and no difference. However that position #1 only has juice with door open switch. So I still can't isolate the problem yet with #2 cluster relay. If it is supposed to be on all the time then I have a circuit that draws too much current somewhere in the cluster gauges etc. Not having a diagram makes this difficult. Any suggestions please?

1 people found this helpful.
30

In case you're interested I disconnected and reconnected every darn thing I could lay my hands on under the dash and...it works. No drain and everything works. Go figure. Just hope it lasts...

1 people found this helpful.

I'm having that problem in my '94 F150 XLT. The keyless entry system is supposed to open the circuits to lots of courtesy lamps and other things after a delay. If you leave a door open, the dome light and door courtesy light should not drain the battery as the keyless entry system should open the circuit (fuse 8 on mine) I now have to see it the timeout removes the approximately 120 ma current that shows with everything off. i just discovered this feature and have not looked into it yet.

My problem turned out to be the recall cable assembly and master cylinder switch. The switch was failing to ground and draining the battery through the brake fluid soaked cable. The fuse in the cable was open. Replace both and cruise control returned along with no battery drain.

Your Answer:

F-150

Looking for a Used F-150 in your area?

CarGurus has 135,743 nationwide F-150 listings starting at $1,100.

ZIP:

Own this car?

Share your experience with others.

2000 Ford F-150

Review another car

CarGurus Experts

  • #1
    OJ
    Reputation
    41,990
  • #2
    Gene Arnett
    Reputation
    16,010
  • #3
    Rowefast
    Reputation
    15,540
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Silverado 1500
4,316 Great Deals out of 128,940 listings starting at $750
Used GMC Sierra 1500
1,992 Great Deals out of 68,490 listings starting at $3,795
Used Toyota Tundra
1,200 Great Deals out of 33,399 listings starting at $3,299
Used Ford F-250 Super Duty
1,369 Great Deals out of 43,993 listings starting at $2,995
Used Toyota Tacoma
2,107 Great Deals out of 35,734 listings starting at $3,500
Used Dodge RAM 1500
103 Great Deals out of 1,561 listings starting at $1,999
Used Ford F-250
217 listings starting at $7,995
Used Ford Mustang
979 Great Deals out of 21,924 listings starting at $1,651
Used Ford Ranger
722 Great Deals out of 13,790 listings starting at $2,500
Used Chevrolet Silverado 2500HD
1,048 Great Deals out of 31,131 listings starting at $499
Used Jeep Wrangler
3,175 Great Deals out of 61,889 listings starting at $3,100
Used Toyota 4Runner
1,217 Great Deals out of 16,644 listings starting at $3,000

Used Cars for Sale

2024 Ford F-150 For Sale
14 Great Deals out of 61,678 listings starting at $30,535
2023 Ford F-150 For Sale
812 Great Deals out of 19,185 listings starting at $25,295
2022 Ford F-150 For Sale
646 Great Deals out of 6,607 listings starting at $23,594
2021 Ford F-150 For Sale
864 Great Deals out of 9,575 listings starting at $10,950
2020 Ford F-150 For Sale
566 Great Deals out of 5,826 listings starting at $11,985

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.