powertrain malfunction with 100% power.

[Ford Motor Company]

After raving about how flawless my ride has been, today I got the wrench. I read some of the related threads where people had bad modules and shifter issues but I still can't tell which group of unfortune owners I belong to. Here is the short story;

I left the driveway in rain and 4 minutes later I got the wrench but my power was at 100%. Dropped to 95% later at night. I tried the wistful thinking thing (turned off the power and back on twice). The wrench went away. I plugged in for a minute to see if it charges OK. It seemed fine. Got back on the road and wrench came back in less than 3 minutes. I checked the voltage variation with carscanner and it didn't look too bad. I ran the trouble codes (attached) and I have no idea what I am looking at or should be looking at.

Background: At 10K service and recall visit, service advisor told me the mechanic said your battery is borderliner. I assume one of the cells may have been high or low but not bad enough.

I have been almost exclusively Level 2 charging but a few weeks ago I had 6 DCFC in one week.

I tried to charge the truck for just a minute and it charged OK. It drives fine too.

Did any of you have similar symptoms? Is it a battery module? Shifter? Something does not like the moisture? A bad sensor?…. any ideas?

Sorry to not provide anything groundbreaking here, but suggest taking it to your dealer. If you send me some details via DM (VIN, dealership, etc.) I will flag it with our engineering team so they can support the dealer as needed. We'll get you sorted!

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[Maxx]

Sorry to not provide anything groundbreaking here, but suggest taking it to your dealer. If you send me some details via DM (VIN, dealership, etc.) I will flag it with our engineering team so they can support the dealer as needed. We'll get you sorted!

I saw your message right after I DMed you. Thanks for reaching out.

 

[TaxmanHog]

Does that mean if this part has a design flaw, it has not been fixed? In other words, if they fixed it, would it have a different part number in 25 than it did in 23?

I have an appointment in a week. After it is done, I will post the results to confirm what he problem was.

I'm not aware of any revisions to the design/build/materials from the original part, but they will alter the PN if they do. Those which have failed might be 1 in a million defects and the vast majority of gears are suitable for long life service ..... OR NOT.....

 

[Maxx]

I'm not aware of any revisions to the design/build/materials from the original part, but they will alter the PN if they do. Those which have failed might be 1 in a million defects and the vast majority of gears are suitable for long life service ..... OR NOT.....

I keep my fingers crossed that is indeed the case and as my mama told me I am just that special.

 

[Maxx]

Has anyone have had coolant diverted valve replaced but didn’t have clicking sound coming out of it. I don’t hear any clicks and my shifter acts OK too. What else can it be?

 

[TaxmanHog]

There have been a few reports of the valve being replaced, but I don't recall if they heard clicking, hopefully they find this thread and comment about what lead up to the replacement.

 

[Maxx]

Update: Truck is in the shop and they said they are replacing the coolant diverting valve. This is after I told them that is what I suspect. I just hope it is a conclusion they came up on their own because unlike others, I never heard any noise coming from the valve.

The other tidbit is that when they were working on it, I got a message on Ford pass “Pro Power Onboard service needed”. Is this something I need to worry about or them updating software or disconnecting 12V battery could cause that message?

 

[flyct]

The other tidbit is that when they were working on it, I got a message on Ford pass “Pro Power Onboard service needed”. Is this something I need to worry about or them updating software or disconnecting 12V battery could cause that message?

I got the exact same message when they were manually applying a software patch when the mobile rep was working on my truck in my driveway.

 

[Maxx]

I got the exact same message when they were manually applying a software patch when the mobile rep was working on my truck in my driveway.

Did you happen to check your AC outputs after to make sure everything worked OK?

 

[flyct]

Did you happen to check your AC outputs after to make sure everything worked OK?

Yes, Everything is working fine after the fault was gone.

 

[tls]

I wonder how often this valve cycles?

 

[TheBigBezo]

I had my coolant valve replaced a few months ago. It started giving me issues right before I moved across the country. I had no problems fast charging or driving the roughly 2,500 miles I needed to go. I didn’t notice any sounds or clicking. My dealer diagnosed it, ordered the part while I kept my truck, and it took a few hours for them to replace it (it was their first ever replacement).

Not a huge deal in my opinion but also not great that it failed within 35,000 miles. In comparable years of ownership I have had more trips to the dealer for my Lightning than my previous Ranger. Still like the truck but there are certainly some weak spots.

 

[NW Ontario Ford Lightning]

https://www.ford.com/product/valve-asy-engine-coolant-control-p4000055114

Running this part number with model year 2025 Lightning selected, shows that it's a part which fits it as well.

I had to go looking to find the other thread on this diverter valve - seemed that the Heat Pump equiped truck didn't use it.
here

The photos RL XXI posted at #50 indicated no diverter valve.

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