Charge to 100% on L2 charger, but GOM shows 84% on startup

[bordner42]

Damn, I just noticed this issue happening to myself this week after noticing that the battery % was consistently showing 2-3% lower than the original estimate on it's first drive after being on the charger to and from work. Meaning that on the way there it was 2-3% less than estimated and at estimate on the way back. Paid attention to it today, and it showed being at 90% then dropping to 88% almost immediately. I've already had two battery modules fail, including one that just finished being repaired only three weeks ago, so it's pretty concerning that there could be a third bad already...

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[Grumpy2]

Ford has said it may take up to 22 days after a module has been replaced for these issues to settle down. Search for SSM 52039. I hope this is your issue.

https://www.f150lightningforum.com/...ction-reduced-power.12873/page-47#post-409941

 

[bordner42]

Ford has said it may take up to 22 days after a module has been replaced for these issues to settle down. Search for SSM 52039. I hope this is your issue.

https://www.f150lightningforum.com/...ction-reduced-power.12873/page-47#post-409941

Thanks for this! I'll give it another week and see if this is the case! I went ahead and charged to 100% on Friday instead of my usual 90% and it didn't seem to have the issue. So hopefully it's just as you said.

 

[Joneii]

Definitely check your coolant level after this repair. I noticed my battery temp slightly elevated after a short fast charger session. The truck never had an issue with fast charging. I checked the coolant reservoir and it was bone dry. I added up to max. After a couple of days, I had to add some more. I think I caught it early, but this could have been detrimental.

With such a quick turn around they may have not vacuumed all of of the air out of the cooling system, so you might want to keep a close eye on the coolant reservoir. You can buy a gallon of the proper coolant and keep the reservoir at the middle in the reservoir if you see the level falling.

 

[Firn]

Definitely check your coolant level after this repair. I noticed my battery temp slightly elevated after a short fast charger session. The truck never had an issue with fast charging. I checked the coolant reservoir and it was bone dry. I added up to max. After a couple of days, I had to add some more. I think I caught it early, but this could have been detrimental.

Similar, I needed a repair that involved dropping the pack. My coolant continued to go down over the next few days, eventually running dry. A quick top up and it hasn't gone down since.

 

[frautumn]

Definitely check your coolant level after this repair. I noticed my battery temp slightly elevated after a short fast charger session. The truck never had an issue with fast charging. I checked the coolant reservoir and it was bone dry. I added up to max. After a couple of days, I had to add some more. I think I caught it early, but this could have been detrimental.

What brand/type of coolant are we supposed to use? I will need to check mine, wasn't aware this could be an issue after the module replacement. I did notice that the first time I charged after getting it back I was hearing some gurgling sounds from the battery area as coolant was circulating, and am worried there is air in there or not enough coolant. Will check when I get back to the truck.

 

[EdRudy]

What brand/type of coolant are we supposed to use? I will need to check mine, wasn't aware this could be an issue after the module replacement. I did notice that the first time I charged after getting it back I was hearing some gurgling sounds from the battery area as coolant was circulating, and am worried there is air in there or not enough coolant. Will check when I get back to the truck.

 

[GoodSam]

I do not get why there are four variants for the Cooling System Capacities. Must be for those who have the Max Tow optioni?

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