Strange buzzing sound / “accessories” battery drain

[thequackenbush]

My lightning within the last week or so suddenly has a buzz sound, similar to a neon light, that I can hear

it happens regardless of whether it’s being charged, sitting idle, or driving. Often, but not always.

I also see a significant portion of my battery per drive is being allocated to “accessories.” I turn off pro power when not being used to maximize range. I don’t have anything else being used.

Anyone else running into this?

the attached video was a bit after driving sitting in my driveway. It was a warm sunny day.

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[Ford Motor Company]

Hi Ryan, we’d like to investigate the noise from your Lightning. Please send us a private message with your VIN and local Ford Dealer. Thanks!

 

[MotoGary]

Maybe pumps and battery cooling systems as described in this Link ?

 

[thequackenbush]

Maybe pumps and battery cooling systems as described in this Link ?

I checked through that, but it's not the fan sound I've heard before- it's a definitive buzz.

 

[thequackenbush]

Hi Ryan, we’d like to investigate the noise from your Lightning. Please send us a private message with your VIN and local Ford Dealer. Thanks!

hi! I've messaged you again

 

[TaxmanHog]

Looking forward to a follow-up of what your local technician finds, those are not normal sounds IMHO.

 

[ctuan13]

The base buzz is actually a sound I'm very familiar with. It's the coolant pumps. However the weird actuator type noise, is very odd...

 

[TaxmanHog]

Maybe the diverter valve [3] is stuck trying to cycling between PTC to battery or loop back to cabin/PTC.

 

[thequackenbush]

Taxman is this gonna blow up
Or something? I have to drive into Boston next week, no time to bring it to a mechanic

 

[TaxmanHog]

Taxman is this gonna blow up
Or something? I have to drive into Boston next week, no time to bring it to a mechanic

I don't know for certain, but it may impact range.

I think I've only read of one or two other members having an issue with the diverter valve.

 

[thequackenbush]

Am at the dealership now having their master techs look into the problem; will report back

 

[thequackenbush]

Techs say: “scan vehicle doc’s, none present. Test drove vehicle, no abnormal noises heard. Traction motors are able to be heard when driving and coasting to a stop which is normal. When stopped or plugged in, coolant pumps are activated to keep the battery at a specific temperature and can be heard running which is normal. Unable to verify concerns at this time” so I have no idea

 

[TaxmanHog]

Techs say: “scan vehicle doc’s, none present. Test drove vehicle, no abnormal noises heard. Traction motors are able to be heard when driving and coasting to a stop which is normal. When stopped or plugged in, coolant pumps are activated to keep the battery at a specific temperature and can be heard running which is normal. Unable to verify concerns at this time” so I have no idea

I guess all you can do is drive it until something breaks, at least your initial concern is recorded, good luck in the meantime!

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