What is this fluid?

[azerik]

You can overfill it, it has an overflow with a hose and not much of a problem since it is environmentally friendly and biodegradable. Different problem if it is empty.

Saw a tiktok video, it goes well with vodka.

(Serious note, the start car and let run for ~6 hours BMS reset is oddly easier than a AGM charger for the most part)

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[MoonRiver]

I'm changing out my (dead) 12V battery. I'm not a diy car guy (usually) and have my hands full as it is trying to deal with this 12V by following YouTube videos. I noticed this fluid is below minimum. I've had every 10k mile service done, so these "should" have been checked. What is the fluid? Can I add more myself? Why is it low? Any help would be greatly appreciated. These are on the passenger side of the frunk (USA).

,

That's the motor electronic coolant.

 

[Shayne]

Saw a tiktok video, it goes well with vodka.

(Serious note, the start car and let run for ~6 hours BMS reset is oddly easier than a AGM charger for the most part)

The one I did last week the manual noted top up 400 ml +/- run at 1500 rpm for 5 minutes and top up. After I did that there was nothing to top up. Ran it for 2 hours working it (Massey) and after cooled 400 ml top up. Was thinking should of just filled it 400 ml over the full line to begin with. Lots of room and it has a overflow. Too much is no problem but empty is.

 

[Teslaeata]

Coolant. Circulates through the radiator and the battery pack.

Nope.

That’s the transmission cooling system’s header tank.

Coolant from there don’t go through the battery which has its own cooling system with header tank more central in front of firewall/bulkhead.

If OP’s tank is empty coolant’s leaking somewhere from the transmission cooling system assuming he’s not had his coolant changed recently and a settling has occurred.

If there’s no apparent leak on floor, have your transmission fluid analysed for water content
& emulsification.

I happen to have my transmission fluid analysed fairly regularly for other reasons of interest mainly and found water content and emulsification in transmission oil when transmission coolant level was then found to be low.

There’s only really one way the coolant can get inside transmission to contaminate the oil and that’s through the heat exchanger.

Had my heat exchanger changed as a consequence of the results of my periodic oil analysis.

Will have new transmission oil analysed in a few thousand miles to recheck on situation.

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