Yellow wrench of doom has appeared Post#22 {GSM failure}

[NCevGuyF150]

I've had my "24 Flash for less than 2 months now. So far... my favorite vehicle I have owned. On Friday, the yellow wrench symbol appeared on my dash followed by a message that read," powertrain malfunction/reduced power- A powertrain or 4-wheel drive fault has been detected." I tried to make an appointment at my local dealer but can't get it in until next week. Today, I started it up and the wrench symbol and messages were gone. My question is: do the warnings, cautions and symbols go away after cycling the ignition on and off so many times? BTW the truck runs great, nothing appears to be wrong with it.
Thanks
Tino

The code will be stored. But obviously, they failure that set. The code has not occurred in several ignitions cycles. A little reprogramming may solve everything. Good luck I’ve been through this.

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[Tino307]

Thank you

 

[Wendy]

That reminds me, I have to maintain my brakes! Someone suggested this monthly.

Put it in N and stop with the brakes. Scrapes all the potato bugs off the rotors that I never use.

So much maintenance to remember!

 

[NW Ontario Ford Lightning]

That reminds me, I have to maintain my brakes! Someone suggested this monthly.

Put it in N and stop with the brakes. Scrapes all the potato bugs off the rotors that I never use.

So much maintenance to remember!

Washer Fluid
Remember to check Washer Fluid.
That's about it.

 

[Wendy]

Washer Fluid
Remember to check Washer Fluid.
That's about it.

Apparently the Phone APP checks that for me now

 

[Lightning Rod]

Might be good to give the truck a nice 'cold reboot', if you will. Disconnect the 12v battery for 20 minutes or so, then reconnect it. I've started to do this quarterly (coming up soon).

I may do this, this weekend. Just like my smart phone, smart watch, my PCs... an occasional reboot never hurts.

 

[Tino307]

I've had my "24 Flash for less than 2 months now. So far... my favorite vehicle I have owned. On Friday, the yellow wrench symbol appeared on my dash followed by a message that read," powertrain malfunction/reduced power- A powertrain or 4-wheel drive fault has been detected." I tried to make an appointment at my local dealer but can't get it in until next week. Today, I started it up and the wrench symbol and messages were gone. My question is: do the warnings, cautions and symbols go away after cycling the ignition on and off so many times? BTW the truck runs great, nothing appears to be wrong with it.
Thanks
Tino

*****************UPDATE***********
Finally got to the dealer. Problem is related to a fault with the gear shifter. Apparently, this a common problem with all ford trucks, not just the Lightning. The dealer said they would overnight the part and try to install tomorrow or Wednesday. About 3 weeks ago I couldn't shift from park to drive, I turned the truck off and on and was able to drive away. It only happened once. Apparently, there is a Technical Service bulletin about this problem.

 

[MountainAlive]

*****************UPDATE***********
Finally got to the dealer. Problem is related to a fault with the gear shifter. Apparently, this a common problem with all ford trucks, not just the Lightning. The dealer said they would overnight the part and try to install tomorrow or Wednesday. About 3 weeks ago I couldn't shift from park to drive, I turned the truck off and on and was able to drive away. It only happened once. Apparently, there is a Technical Service bulletin about this problem.

This sounds better than a bad battery module. But there’s a whole other discussion about the GSM ( gear shift module?) that’s been popular this week too.

 

[NW Ontario Ford Lightning]

Is the gear shift module issue specific to model year - if so which years?

I saw this TSB for 2021 F-150 ICE
TSB 21-2141

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