"Motor Coolant Over Temperature"

[KevinSReed]

Updated procedures noted in post #43
https://www.f150lightningforum.com/forum/threads/motor-coolant-over-temperature.15219/post-572540

PENDING SOLUTION noted in post #20
https://www.f150lightningforum.com/forum/threads/motor-coolant-over-temperature.15219/post-319172

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My brand new 2023 Lariat ER (1,250 miles) flashed this message moments after I started the truck in my driveway (where it had been sitting for over 2 hours). Clearly, the motor could not have been hot. My dealer can't replicate the problem (it persisted right after the first instance, but an hour later ran fine), and wants to keep the truck for an extended time to see if they can see it repeat. Anybody have a similar problem? Sensor? Software? Any chance it's a pump?

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[TaxmanHog]

Might be a failing temp sensor.

 

[Crilly]

Was it sunny? Did you park over hot asphalt? Was the interior hot?

 

[Amps]

Un-purged air pocket in the coolant loop?

 

[KevinSReed]

Might be a failing temp sensor.

Thanks. Will suggest that to the techs.

Was it sunny? Did you park over hot asphalt? Was the interior hot?

50 degrees and cloudy!

 

[KevinSReed]

Might be a failing temp sensor.

Great suggestion.

 

[KevinSReed]

Was it sunny? Did you park over hot asphalt? Was the interior hot?

Great suggestion too.

 

[Megsfolks]

Happened to me today. I looked and saw my coolant below minimum. Topped it off. No more problem

 

[Ford Motor Company]

My brand new 2023 Lariat ER (1,250 miles) flashed this message moments after I started the truck in my driveway (where it had been sitting for over 2 hours). Clearly, the motor could not have been hot. My dealer can't replicate the problem (it persisted right after the first instance, but an hour later ran fine), and wants to keep the truck for an extended time to see if they can see it repeat. Anybody have a similar problem? Sensor? Software? Any chance it's a pump?

Hi there, Kevin! Go ahead and send us a private message with your VIN and dealer info and I’ll look into this message concern for you. Thanks!

 

[Lytning]

Happened to me today. I looked and saw my coolant below minimum. Topped it off. No more problem

No overheating, but the coolant level on my new Lightning was delivered from the factory at the minimum level. I had it topped off by the dealer during a visit for other warranty items.

 

[Kbar8888]

I just had this happen to me today. It was parked for several hours in front of my house. 55 degrees and cloudy. Went to drive to grocery store and got motor coolant over temperature error message. I recall noticing that the yellow coolant reservoir had coolant at the min mark when I first picked up the truck new. I just assumed that was normal. Now I'm wondering if that played a role. Does anyone know can we just add more coolant and, if so, what type to add?

 

[TaxmanHog]

I recall noticing that the yellow coolant reservoir had coolant at the min mark when I first picked up the truck new. I just assumed that was normal. Now I'm wondering if that played a role. Does anyone know can we just add more coolant and, if so, what type to add?

MIne has been just a hair under the low level line for months, I've had no issues or alerts concerning my trucks cooling systems, I bought a gallon jug of this at my local Advanced Auto, it's available from most retail parts store or your Ford dealer P&A department.

Genuine Ford Fluid VC-13DL-G Yellow Pre-Diluted Antifreeze/Coolant - 1 Gallon

https://www.amazon.com/Genuine-Ford...ocphy=9002142&hvtargid=pla-454167822652&psc=1

 

[TaxmanHog]

 

[Amps]

Standard battery, single power inverter. 15.3 qt (14.5 L)
Standard battery, single power inverter 16.8 qt (15.9 L)

Extended Range battery, dual power Inverter. 16.3 qt (15.4 L)
Extended Range battery, dual power Inverter 17.8 qt (16.8 L)

Well, that's clear as mud. ?

 

[TaxmanHog]

Well, that's clear as mud. ?

I think they made a typo, lines two & three have the inverter types wrong, just a guess on my part.

Standard battery, single power inverter. 15.3 qt (14.5 L)
Standard battery, dual power inverter 16.8 qt (15.9 L)

Extended Range battery, single power Inverter. 16.3 qt (15.4 L)
Extended Range battery, dual power Inverter 17.8 qt (16.8 L)

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