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Ford Pass connects for a bit after modem reset, then once I charge again disconnects

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Jamchampnate

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Kk. I’ve never even seen “update available” so haha I guess I’ll try
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Jamchampnate

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Does your modem light up again if you fully start the truck?
Your symptoms sound like a weak 12v battery. If your 12v battery drops to 40-50% SOC the truck charges it from the HVB and shuts down many modules like the modem to conserve energy. Given your symptoms I'd check there first. You can check your 12v battery SOC online on your account at Ford.com from your account screen.
1709307287062.png

This is an example of the last update it will give. 12v SOC (Charge Level) is 43% and it will no longer get updates since the truck will charge the 12v and shut down the modem.
Where can I find the modem light?
 

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Where can I find the modem light?
Sorry, figure of speech meaning your modem is on. Your FordPass will update when you drag down from the top on the Fordpass App if your modem is working.
 
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Jamchampnate

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Ah sounds good. Thanks.
 
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Jamchampnate

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Sorry, figure of speech meaning your modem is on. Your FordPass will update when you drag down from the top on the Fordpass App if your modem is working.
Ok now I can see the icon in the car indicating I have a data connection. I’m just going to leave the car on in the garage and just keep checking for updates.
 

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Ok now I can see the icon in the car indicating I have a data connection. I’m just going to leave the car on in the garage and just keep checking for updates.
Make sure you have your truck connected to wifi. There is an OTA going around to fix a problem with connectivity issues in the TCU. If you are affected by this, wifi is the only way you will get this update.
 
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Jamchampnate

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Yep on Wi-Fi. Will I get it if I leave my truck on and plugged in? I’m worried that if I turn it off it won’t connect to cellular again without going through the reset process for the 100th time haha
 

rugedraw

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Yep on Wi-Fi. Will I get it if I leave my truck on and plugged in? I’m worried that if I turn it off it won’t connect to cellular again without going through the reset process for the 100th time haha
The update I am talking about will come in through wifi if the TCU has no connection so the TCU not having connectivity will not prevent you from getting it.

Do you have any issues with traffic in nav not working, weather, etc?
 
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Jamchampnate

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I usually use CarPlay so I don’t notice. But the little triangle icon with the two arrows is rarely showing (on the top right of the sync display) which I’m told indicates data connection when it’s on. My main annoyance is not being able to see charge status, remote start, does pass stuff, etc. from the app remotely. Drives me nuts.
 

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Send me your VIN so I can poke around and see if I see anything that helps.
 

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I had an interesting OTA episode while at home for a week. Charger was plugged in. Auto update turned off for 6 days straight. Got in the truck turned it on and download happened. Then turned delayed power off and left it on for ten hours and the download loaded. Then updated the next morning.

Note the Power up update number for this April ‘23 build. 1st update ever.. shocker, now the BMS is faulty since.well before Turkey Day. Recorded 6% SOC at LVB after sitting at work for 10 hours. Still started to that “Sensor IQ” is.. low. 😂. It’s getting replaced. Truck never abandoned or threw of various colors of ill health.

Ford F-150 Lightning Ford Pass connects for a bit after modem reset, then once I charge again disconnects IMG_2850
 
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Ok now I can see the icon in the car indicating I have a data connection. I’m just going to leave the car on in the garage and just keep checking for updates.
Make sure to go into the Vehicle settings, switch off the automatic shutdown timer.
 
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Jamchampnate

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Send me your VIN so I can poke around and see if I see anything that helps.
Let me know if you find anything. Gonna schedule an appointment with Ford next week.
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