Electric motor high temperature

[taylormade77929]

So yesterday was a 90 degree day. I drove about 10 miles for some errands. Parked for about 30 minutes. When I came back and turned truck on the temperature gauge for the electric motor (the one on the right not the battery temp gauge) was yellow and I got a message “electric motor temp high reduced performance”. I did not notice any reduced performance and I had 100% of my available power. I went easy on it to be safe. Once I got on the freeway and started moving faster the guage slowly went down, back into the blue section and eventually settled at its normal point. Haven’t seen any posted about this and am hoping it was just a sensor glitch. Anyone else had this happen?

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[Tfarrell73]

Have you checked your coolant level? Truck doesn't seem to warn you if low

 

[taylormade77929]

Yes that’s the first thing I checked. It was within normal range. No issue today. Took it on a 120 mile round trip all freeway

 

[Heliian]

Could be a sensor or wiring, do you have max tow?

 

[Woonkie]

I live in the desert. It’s over 110 and I’ve done road trips and supercharged and never got that warning. Take it to the dealership.

 

[TaxmanHog]

I'd bring it in to at least do a visual inspection of the oil level in the motor and coolant degassing bottle.

 

[taylormade77929]

I don’t think I have the max tow package. It’s a 2023 lariat extended range battery and it does have all the smart tow features on the dash, but I never use it. I really like this truck a lot. Have had minimal issues except the dreaded power train failure which ended up being one of the batteries. Luckily for me the dealer in my area diagnosed and fixed it in 5 days. I’m chalking this up to a sensor issue for now but if it happens again I’ll take it in. Problem is I use this truck for my business and it is a huge inconvenience for me to take it in even if it’s for a few days.

 

[Zprime29]

I'll second @Woonkie, mine has sat in the sun through multiple days over 110F. The motor gauge has not budged, ever. I would plug in an OBDII reader or take it to AutoZone and ask them to read the codes. See if anything interesting pops up. It's certainly possible the sensor flaked out. Has happened before:
https://www.f150lightningforum.com/forum/threads/motor-coolant-over-temperature.15219/post-319172

 

[TaxmanHog]

I don’t think I have the max tow package.

You can confirm which you have, look at this POST, if your chiller is to the left of the battery then you don't have max tow, but if it's to the right, then you do.

 

[taylormade77929]

Ok. Thanks for all the replies and tips. I will investigate further. I’ve really enjoyed this forum as it has provided me with a wealth of information about the truck. This is the first vehicle I’ve bought where the dealer really didn’t tell me anything when I bought it.

 

[Gimme_my_MME]

Sounds more like the software bug. Why would your motor get hotter while the truck was off and sitting there for 30 minutes?

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