Underhood jump points don't work ...

[Deweyordeweynot]

I had to jump the 12v battery last week and couldn't do it via the power points under the hood, so I went to the battery posts and got the truck started, and it got me thinking: do my power points actually function? My battery tender showed no connection but it needs a minimum amount of charge detected in the battery to work, so I decided to put a multimeter on the power points (after fully charging the battery), and there's zero voltage on the meter. The Ford dealer will be looking into it today but I wanted to suggest you check your underhood power points, just in case...and I purchased a NORCO GB40 Boost+ jump box and it shows no connection when attached to the jump points. Good thing I discovered this in the driveway!

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[Hot Runr Guy]

Please post a pic of which powerpoint you were using for the positive side.

Thanks, HRG

 

[Deweyordeweynot]

Here you go...

 

[Deweyordeweynot]

Please post a pic of which powerpoint you were using for the positive side.

Thanks, HRG

 

[EffNo50]

I believe the black cap you have uncovered says not a jump point. That is not a negative post.
https://www.mavericktruckclub.com/forum/posts/718615

 

[colinl]

I believe the black cap you have uncovered says not a jump point. That is not a negative post.
https://www.mavericktruckclub.com/forum/posts/718615

negative anywhere on the frame would have likely worked, also.

 

[Hot Runr Guy]

Your red one is correct, the negative one is on the fender, per the owners manual.

HRG

 

[Hot Runr Guy]

Heck, what you used as a negative is labeled as a positive, with a "no jumper clamp" image on it.

HRG

 

[Prickly Pear]

The black one on the left is also positive and has a symbol indicating not to attach clamps to it.

 

[REMUB40]

I have the same NOCO GB40. I wonder if those short clamps will even reach both post.

 

[Hot Runr Guy]

I have the same NOCO GB40. I wonder if those short clamps will even reach both post.

Try it on the correct jump points and report back.

HRG

 

[HeyBales]

I have the same NOCO GB40. I wonder if those short clamps will even reach both post.

It's really not that far, pack goes on that indent on the fuse box area and both cables out the correct direction reach both points.

 

[HeyBales]

I had to jump the 12v battery last week and couldn't do it via the power points under the hood, so I went to the battery posts and got the truck started, and it got me thinking: do my power points actually function? My battery tender showed no connection but it needs a minimum amount of charge detected in the battery to work, so I decided to put a multimeter on the power points (after fully charging the battery), and there's zero voltage on the meter. The Ford dealer will be looking into it today but I wanted to suggest you check your underhood power points, just in case...and I purchased a NORCO GB40 Boost+ jump box and it shows no connection when attached to the jump points. Good thing I discovered this in the driveway!

Your NOCO's protection of hooking it up wrong protected your truck.

Imagine what you could have blown using some cheaper charger - backfeeding into the DCDC Converter.
Ouch indeed.

 

[SpaceyMac]

I had to jump the 12v battery last week and couldn't do it via the power points under the hood, so I went to the battery posts and got the truck started, and it got me thinking: do my power points actually function? My battery tender showed no connection but it needs a minimum amount of charge detected in the battery to work, so I decided to put a multimeter on the power points (after fully charging the battery), and there's zero voltage on the meter. The Ford dealer will be looking into it today but I wanted to suggest you check your underhood power points, just in case...and I purchased a NORCO GB40 Boost+ jump box and it shows no connection when attached to the jump points. Good thing I discovered this in the driveway!

Not trying to belittle concern, but this all sounds like user error.

1. Incorrect remote jump points used underhood.
2. NOCO and many other jump start have safety function that if voltage read is <2 volts, the jump start device will not recognize battery and not turn on. If cables are correctly attached can then press manual override button on NOCO (button with exclamation point). This allows you to force on the jump start function.

From NOCO GB40 manual:
Low Voltage Batteries & Manual Override. The GB40 is designed to jump start 12-volt lead-acid batteries down to 2-volts. If your battery is below 2-volts, the Boost LED will be "Off". This is an indication that the GB40 can not detect a battery. If you need to jump start a battery below 2-volts there is a Manual Override feature, which allows you to force "On" the jump start function.

! Manual Override Button To enable, push and hold for three (3) seconds. WARNING: Disables safety protection and manually forces Boost "On". Only for use when a battery is too low to be detected.

 

[Ozarkbeard]

The black one on the left is also positive and has a symbol indicating not to attach clamps to it.

And also labeled positive +

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