Multiple Error messages and bricked: Post #41

[TaxmanHog]

Not if they lift the rear wheels to tow, and dollies under the front.

I'm referring to getting the truck onto the flat bed truck not on a hook & drag down the road.

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[Nomoregas]

ok I had just pulled the 12 volt out and left the truck for last week or 2 but today I tried again put fully charged 12 volt in and here is my video of what happens, I am touching nothing after start button.

Frunk was open, door was open

 

[El Duderino]

How much do you know about the battery you used?

Has it been load tested?

Can you measure the voltage off the battery after pushing the start button?

I suspect either your battery voltage is sagging under load or you have a different issue.

But I would confirm you have high enough voltage under load. That many different controllers throwing errors definitely could be low voltage. I would start there.

 

[chriserx]

ok I had just pulled the 12 volt out and left the truck for last week or 2 but today I tried again put fully charged 12 volt in and here is my video of what happens, I am touching nothing after start button.

Frunk was open, door was open

That's crazy, almost certainly a wiring issue. I'd be inclined to say possibly a failed computer module, but the only one that I know of that can tie all of those warnings together is maybe the gateway module. I'm headed to clock in for work so I can't search it for you but maybe look up that wiring harness that's behind the glovebox and check it out. Iirc there was a thread on it sorta recently.

 

[Nomoregas]

battery is Ford OEM brand new and 13 volts, as a note I used a pretty new 12 volt deep cycle battery as a test as well same result.

 

[crazynut52]

I’ve got literally the exact same issue and symptoms going on. Dealer has the truck now but I don’t have high expectations. 2022 Lariat 80k miles. If/ when they fix it, it’s going down the road. It has become way to unreliable

 

[Heliian]

Unless you're a good mechanic with electrical troubleshooting knowledge just take it to the dealer. Most people don't have a clue.

 

[Nomoregas]

ya I have just removed the 12 volt for the last few weeks until I get it to the dealer, been way to cold to empty the truck. May look behind the glove box just to see what I see

 

[Nomoregas]

Well here is my update and it is very bizarre to me!

So after approx 4 weeks truck sitting it was a warm day here and I decided to put the NEW 12 volt back in, ben on a battery maintainer out of the truck all this time.

First I had read about the glove box shorted wires by someone so I popped that out and had a look, I really could not see an obvious short so I put 12 volt in and decided to do the flash hi beams 5 times and push brake 3 times to reset the bms. Well with one or the other the truck was back up and running.

Now if it was the bms... well that is pretty stupid that I would have gone through all that I did all because I did not know at the time to reset the bms after the new battery. Anyways hoping it holds out as I only drove about 15 KM to test and all was great.

I feel I almost would have got hosed by my dealer for 5k had I towed it in, no they wouldn't do that.... would they..

 

[El Duderino]

Happy to hear it's working again!

 

[Nomoregas]

Well after many many weeks ( I let truck sit for 3 weeks before towing) Ford finally looked at my truck as it sat there for 2-3 weeks due to another truck all pulled apart in the 1 ev bay they have. So they are claiming it is a harness plug and the BMS corrosion issue and they need to order the plug/harness and a new BMS module, which is 7-10 days to get. Brutal Mr. Farley

Anyways my question is, can someone tell me where this BMS is located as I was thinking if water and salt could destroy this in just 3.5 years maybe I should silicone around the edge of the plug in harness.

$2050 plus tax repair by the way

 

[TaxmanHog]

Well after many many weeks ( I let truck sit for 3 weeks before towing) Ford finally looked at my truck as it sat there for 2-3 weeks due to another truck all pulled apart in the 1 ev bay they have. So they are claiming it is a harness plug and the BMS corrosion issue and they need to order the plug/harness and a new BMS module, which is 7-10 days to get. Brutal Mr. Farley

Anyways my question is, can someone tell me where this BMS is located as I was thinking if water and salt could destroy this in just 3.5 years maybe I should silicone around the edge of the plug in harness.

$2050 plus tax repair by the way

I believe the BMS is inside the HVB casket, but the interface plug on the outside is what might be compromised as it's exposed to possible water intrusion if the seals on the connector fail, the 'problem' might be only the connection, giving false failures about the BMS, or could be both failed but for different reasons.

 

[TaxmanHog]

 

[Jim Lewis]

Anyways my question is, can someone tell me where this BMS is located

I believe the BMS is inside the HVB casket

I have just skimmed this thread. Is the discussion for a BMS for the HVB? The BMS for the 12V LVB is part of the negative terminal cable and is located just before the attachment point to the negative terminal of the LVB.

The 12V BMS is to the right of the blue circle on the left in the picture below from @bmwhitetx's great post: https://www.f150lightningforum.com/forum/threads/charging-12v-battery.16979/#post-342220

According to Google Search, the BMS for the HVB is located at the front of the HVB battery pack:

The Battery Management System (BMS) for the high-voltage battery (HVB) in the 2022 Ford F-150 Lightning is located at the front of the battery pack housing. This unit is integrated into the pack, which is situated underneath the truck between the wheels. [1, 2]

See starting about 2'48" into Munro video (link#1 in quote just above): . Earlier in the video, the connector seals at the front end of the pack are discussed as suboptimal, which may be relevant to your problem, @Nomoregas.

$2050 plus tax repair by the way

Wouldn't such corrosion and failure be considered a failure of the drivetrain mechanism and, theoretically, be covered under the 8-year 100,000-mile warranty of the drivetrain (motors, HVB battery, etc) if the failure occurs in normal use?

ChatGPT Summary of Munro Video Design Issues:

Summary

The reported HVB BMS failure due to salt/water corrosion in a 2022 Ford Lightning is best viewed as a design-for-environment issue rather than routine wear.

The Munro teardown analysis indicates that Ford’s battery pack uses a serviceable, gasket-based sealing approach with multiple interfaces and connectors. While functional, this design introduces more potential ingress points compared to fully sealed architectures.

Of particular concern is the placement of connectors and sealing interfaces at the front of the battery pack, an area subject to intense road spray, salt exposure, and freeze–thaw cycling. These are normal operating conditions across much of the U.S., not exceptional cases.

If moisture and salt were able to penetrate the sealing system and reach the BMS, leading to failure, this suggests a limitation in sealing durability or connector protection under expected environmental exposure.

In that context, the failure is reasonably interpreted as a design robustness issue rather than unavoidable corrosion, especially if it occurred within the expected service life of the vehicle.

 

[TaxmanHog]

According to Google Search, the BMS for the HVB is located at the front of the HVB battery pack:

Only the connector port is at the front exterior, while the actual BMS modules is inside.

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