Under Body Leak/ Noise

[STXEV1]

Hello,
I have a new to me 2023 Ford F150 Lightning Larait (ER)
With around 12k miles,
Picked it up last Monday as of yesterday it’s in the service of my local dealer,

Rewind to Monday-Friday
Purchased Monday Night,
Family Loved it, wife and tire kids,
My oldest daughter would request taking the Lighting over Moms, 23 Ford Expedition,
No issues Charging, Driving Fine,
Saturday Driving home heard a noise from the passenger rear end and sound like a bad brake or something on the wheel bearing pulled over brakes were cool to touch, so decided to drive it to dealer since it was less than 2 miles away , and wanted to beat to service rush on Monday morning,
On the drive there the noise would come and go depending on speed and one pedal drive setting, but never go away.
At the service center I Had my Wife’s Expedition there for a service trip, so just swap car seats and on my way,
Upon looking under the Lighting saw a puddle of liquid,
Service advisor had me turn on the truck and noise automatically came back,

I’ve seen previous forms of the liquid/coolant build up on the same area but none mentioning hearing a noise,

Trucks in service and under warranty so know it’s a good hands, but as The Lightning being my Dream Truck,
Had been searching high and low for a good deal,
It’s a setback to major journey with the truck,

Appreciate any information or feedback you anyone can give me,
I’ll be documenting updates as my service gives me update.

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[STXEV1]

Here’s another picture of the leak.

 

[Ray R]

If I had to guess, I’d say you have a transmission fluid leak. Does the liquid feel oily?

 

[STXEV1]

Was oily but had a more coolant/water consistency.
Didnt have no odor/scent.

 

[IT Guy]

Possibly battery coolant leak (just guessing)?

 

[TaxmanHog]

Upon looking under the Lighting saw a puddle of liquid,
Service advisor had me turn on the truck and noise automatically came back,

You say that the "noise" came back when you turned on the truck w/o driving, that could be a coolant circulator pump.

 

[STXEV1]

Possibly battery coolant leak (just guessing)?

Will update with clarity on what that liquid was this week and where it came from.

 

[STXEV1]

You say that the "noise" came back when you turned on the truck w/o driving, that could be a coolant circulator pump.

The first culprit that came to mind was the brake caliper because that’s what the noise reminded of a sticky brake caliper,
The nails on the chalk board type sound,
But the cool to touch rotor was where I said lets just take it in.

 

[TaxmanHog]

The first culprit that came to mind was the brake caliper because that’s what the noise reminded of a sticky brake caliper,
The nails on the chalk board type sound,
But the cool to touch rotor was where I said lets just take it in.

Sometimes the truck spontaneously sets the rear parking brakes even after being parked and off, I've approached my truck and suddenly it set's the brake, that screeching sound could the the brake actuators, the sound is normal but not normal if heard while driving.

 

[STXEV1]

I’ve experienced that on uneven surfaces (sloped driveway)
But truck won’t move.
Hoping for a speedy turn around.

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