Powertrain Malfunction/ Reduced Power

[vvgogh]

I had to rent a vehicle and leave the truck behind.

Bring a ODB reader and clear the error. You can then DC charge normally below 80% and AC below 90%. Above this, charging may slow more than usual as the truck protects itself against overcharging the out of family errant voltage cell. If you don’t have an ODB reader, stop by an auto parts store and they’ll let you borrow one in the parking lot for free.

The cleared error will return in a few days, depending on temperature, pushing the cell out of voltage for enough time. So, get it addressed when convenient. (The dash message says service vehicle “soon”)

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[GoodSam]

@pmac1010 Please provide Year, model, ER/SR, and build date for the tracking sheet (in my signature). Not sure if the number of battery module failures are stabilizing yet.

 

[pmac1010]

@pmac1010 Please provide Year, model, ER/SR, and build date for the tracking sheet (in my signature). Not sure if the number of battery module failures are stabilizing yet.

2023 Lariat ER. Build date Oct 14, 2023

 

[pmac1010]

Got the truck back today. Found cell 79 in array 8 was shorted. Replaced array 8. In the shop for just under 2 weeks.

 

[Bandit1982]

We have been waiting for a battery module since 9/26/25. Dealer said should be the next couple of days on 10/8. We brought it home thinking we could use it to town and back. It will only charge at 2.2 to 5 kw now. Usually it charges around 16kw to start but never seen it that slow. So it is just parked in the garage waiting on Ford dealer to call and let us know the battery module is here. Wife is driving old 2000 GMC 2500 with 279k miles gages jumping around. Feels like Joey Logano is bump drafting us when trans shifts. Its the reason I bought the Lightning. I think Ford should do better job at helping with loaner car.

 

[Maxx]

I am now part of the club too. I had 100% power when it happened but it is end of the day now and after turning it on and off several times, now I am getting 96% power. My hopes of having a gearshift problem is shifting to nightmare of module problem. Has any of you had your power go down gradually?

My HV battery leak Positive = 3.03V , Negative = 2.5V. Resistance 1627 kOhm (what do you guys have? I have old readings read zero and 1300 ). SOC module variation= 0.39%. 0V

Is it gearshift? Or battery module?

@Warren , what was your symptom? Did the wrench come and go? Or once it turned on, it stayed? Did you notice a problem with shifter? Mine works fine.

@SpaceEVDriver , did you have any power loss? I used the car scanner “Diagnostic Trouble Codes” under GSM and ran it. Didn’t get any code. I am not sure if I am doing something wrong or this means mine is not a gearshift problem. Any ideas?

Ford App says Powertrain Malfunction / Reduced Power but dash display reads 100% power available no noticeable decrease in power, but not pushed hard.

This initially looked like my wrench. I got this today 4 min into the drive. It comes on a little after I turn on the truck. At first I had full power. Now at 96%. And didn’t notice any problem with my shifter.

Did you notice any problems with your shifter? Did you find out if it was the actuator was the problem? A sensor? other electronics?

p.s. my wrench shows lower on status bar. I am not sure it is because my problem is battery module problem or my software is different than yours.

https://www.f150lightningforum.com/forum/threads/powertrain-malfunction-with-no-power-loss.31639/

What do you think? I have battery or shifter problem?

 

[SpaceEVDriver]

Mine is definitely the shifter problem. There's a clear clicking and attempt of the motor to push the shifter into park. There has been no power reduction. I haven't had it fixed; it only happens when the cabin is hot from sitting in the sun too long. I have the rotary dial and kit to install, but I haven't had time to install it.

 

[Warren]

I am now part of the club too. I had 100% power when it happened but it is end of the day now and after turning it on and off several times, now I am getting 96% power. My hopes of having a gearshift problem is shifting to nightmare of module problem. Has any of you had your power go down gradually?

My HV battery leak Positive = 3.03V , Negative = 2.5V. Resistance 1627 kOhm (what do you guys have? I have old readings read zero and 1300 ). SOC module variation= 0.39%. 0V

Is it gearshift? Or battery module?

@Warren , what was your symptom? Did the wrench come and go? Or once it turned on, it stayed? Did you notice a problem with shifter? Mine works fine.

@SpaceEVDriver , did you have any power loss? I used the car scanner “Diagnostic Trouble Codes” under GSM and ran it. Didn’t get any code. I am not sure if I am doing something wrong or this means mine is not a gearshift problem. Any ideas?



This initially looked like my wrench. I got this today 4 min into the drive. It comes on a little after I turn on the truck. At first I had full power. Now at 96%. And didn’t notice any problem with my shifter.

Did you notice any problems with your shifter? Did you find out if it was the actuator was the problem? A sensor? other electronics?

p.s. my wrench shows lower on status bar. I am not sure it is because my problem is battery module problem or my software is different than yours.

https://www.f150lightningforum.com/forum/threads/powertrain-malfunction-with-no-power-loss.31639/

What do you think? I have battery or shifter problem?

I got the wrench on and off. Probably drove it for two weeks before it got fixed. Even months before that, I would occasionally notice the shifter being stiff.

Everything has been great since they replaced the shifter module

 

[JSBishop]

If it was the Shifter issue the Scanner (Forscan) would have logged an error with the GSM. Also my Shifter would not fold down when the orange wrench showed, after a shutdown or two it would correct itself fold down and the wrench would go away. I had the shifter replaced with the new improved part number and so far the issues has been resolved. My Power was always 100%. Seems like your truck at 96% would cause me to ask the dealer for a Warranty review...

 

[jbh]

Also new to the powertrain malfunction/reduced power club. I have an XLT ER, build date 10/23, 17k miles. Had the yellow wrench show uo intermittenly over the last 5 weeks but without reduced power or obvious gear shifting symptoms. 2 weeks to get a service appointment. Initial evaluation was GSM replacement indicated, they also did some software updates and told me to drive it till the module came in.

Got the truck home and it wouldn't charge either by AC or DC (EA). My other non ford EV charges fine on the same chargers. The charging ring is blue, no orange color with the charging cord attached. The power malfunction light returned.

Took it back to the dealer and they could find no faults, they did replace the GSM but could not get it to re-program. After resetting the power malfunction light the truck now charges to 57%, but no further. SA can find no fault codes, specifically no battery fault failure codes. The SA is stumped and kicking the problem upstairs. Any suggestions/thoughts?

By the way, there was no loaner vehicle available, so rented a small truck. Afterwards, when I called the Ford BEV hotline, they said Ford would reimburse for a rental, but it had to be a Ford (I was given a Toyota, so out for this week's rental). Really think the service department at the dealer should have told me this was an option.

 

[GoodSam]

By the way, there was no loaner vehicle available, so rented a small truck. Afterwards, when I called the Ford BEV hotline, they said Ford would reimburse for a rental, but it had to be a Ford (I was given a Toyota, so out for this week's rental). Really think the service department at the dealer should have told me this was an option.

Dealer told me to rent from Enterprise and they would cover cost, but then I find out only reimbursement to $40/day which does not cover the cheapest rental over this 7 week 25S18 recall repair (replaced 3 modules). Ford BEV also said that they would have covered extra if it was a Ford VIN for the rental. So much for any "goodwill" from these creeps, @Ford Motor Company and the dealer. The long delay was due to both the dealer Tech availability (working on a Mach-E was one of the delaying factors) and the Ford requirement to drop the battery pack to inspect before providing replacements, even though they knew which modules had to be replaced.

That 57% limit sure points to a battery module needing replacement. The software update would be a separate problem, I would think, probably an untrained Tech. They should also be able to easily look at the 96 cells and see if any are low. Sucks to be us?

 

[Bandit1982]

Follow up on our Power Malfunction/Reduced Acceleration.

This all started on 9/5/25. Thank goodness it was after our trip from North Carolina to Indiana and back. One week later on Sept. 5. We got our 23 F150 Lightning back yesterday Friday Oct. 17.

Ford had sent the wrong battery module dealership said so took a couple of days more. Through conversation with the service representative this was either his first time or the dealerships first time with the battery swap. Crossing fingers. I did notice through the app on my cell phone it says 100%, the truck had only charged to 305 miles at the dealership using their charger. Truck itself on the dash says 308. Before all this happened, we would get 320 to 328 at 100% charging. I would have thought it would be back to what it was. To be fair maybe need to charge a few times to get an accurate estimate and I need to check the truck. Maybe it was set to 90% and that limited it. Is that app telling me reached 100% charging of the set 90%. I will check the truck this morning.

We are happy to have it back. We do really like it. I can't help but wonder if this is going to happen again. Hope not. At 63 headed towards retirement, this I had hoped was the last pickup I was buying.

Thanks to everyone here posting. The information is great. Curious how many battery replacements have happened vs total Lightnings produced.
Thanks again.

Bill

 

[The Weatherman]

Follow up on our Power Malfunction/Reduced Acceleration.

This all started on 9/5/25. Thank goodness it was after our trip from North Carolina to Indiana and back. One week later on Sept. 5. We got our 23 F150 Lightning back yesterday Friday Oct. 17.

Ford had sent the wrong battery module dealership said so took a couple of days more. Through conversation with the service representative this was either his first time or the dealerships first time with the battery swap. Crossing fingers. I did notice through the app on my cell phone it says 100%, the truck had only charged to 305 miles at the dealership using their charger. Truck itself on the dash says 308. Before all this happened, we would get 320 to 328 at 100% charging. I would have thought it would be back to what it was. To be fair maybe need to charge a few times to get an accurate estimate and I need to check the truck. Maybe it was set to 90% and that limited it. Is that app telling me reached 100% charging of the set 90%. I will check the truck this morning.

We are happy to have it back. We do really like it. I can't help but wonder if this is going to happen again. Hope not. At 63 headed towards retirement, this I had hoped was the last pickup I was buying.

Thanks to everyone here posting. The information is great. Curious how many battery replacements have happened vs total Lightnings produced.
Thanks again.

Bill

Don’t worry too much about the current GOM readings. It takes several days and multiple charge cycles to to balance the multiple modules. It should return to normal in a while.

 

[theblunden]

I love this truck but man do I hate bringing it into the Service Department at Ford. I've been getting the power train Malfunction/ Reduced Power for over 2 year on and off with 100% power available service light aka GSM is bad. So I dropped it off yesterday at 1 pm to have them pull the code and order the backordered GSM because the Service Light was "active" even though they have a lengthy record of my service lights with the same code on their computers every time I step into the service department SMH. They requested to keep the truck overnight because their only EV tech wasn't able to get to it (I didn't have an appointment oh well) I was ok with that I saw my truck moving a couple times then stayed still in the parking lot for 4 hours so I drove by to pick up my truck only to be told they'd be holding the truck till November 7th for a GSM because it was unsafe to drive. Needless to say I drove my truck home tonight against their recommendations seeing how it didn't matter to them before to send me out the door when the light wasn't "on" even with a paper trail

 

[Bandit1982]

2 YEARS!! I think Ford should be trying to make this right. This is something that is a problem for many owners. We got ours back after they replaced one of the nine modules. So far so good. But this situation that we the owners are seeing really creates doubt on the longevity of the vehicle based on cost if its out of warranty. Makes me think even though we love the truck, but the depreciation of the truck is also an issue and maybe why some continue with the truck as its cheaper then the hit they would take to trade it in.

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