Contantly cooling while charging and driving

[69800]

Is this the same pump used for the car heater? If this pump failed would the computer know to stop the charging process in order to protect the charger?

[TomT]

It monitors temperature, so yes.

Is this the same pump used for the car heater? If this pump failed would the computer know to stop the charging process in order to protect the charger?

[userneym]

Hi have exactly the same problem, I have a 2015 Leaf SV with 5000 miles on it, they decide to change the VCM, i had to wait 1 month before receiving the part, they change it monday and unfortunately this have not solve the problem, so they ordered an other part yesterday and suppose to change it today. So im driving a stupid Micra for over than a month now.

The Nissan service is very very bad, they never call for feedback, yesterday I open a complaint at Nissan Canada, I hope they can fix an arrangement for me.

I have the same car and I have the same problem, cooling fan is constantly running when charging. What was the part they changed to fix it? Thanks.

[arnis]

Likely problem with temperature (too high) or temperature measurement.
ELM bluetooth adapter can read codes. This would most likely show something.
You sure FANS are running? Blowing air under the hood?
Latest LeafSpy app shows some temperature readings, depending on Leaf year.

[IssacZachary]

Do/can the radiator fans actually cool the battery? It got up into the 80's a couple of days last week and I saw 6 battery temp bars for the first time. But it cools down into the 40's, sometimes 30's at nights. I was thinking of hooking up the fans directly to a 12V battery (not necessarily the Leaf's 12V battery) and charging that battery with an automated battery charger. I was thinking of using a simple thermostat and relay to turn the fans on at temps lower than 50F and hopefully cool the battery down all night so it will have a hard time getting hot during the day.

[LeftieBiker]

Do/can the radiator fans actually cool the battery?

No. More likely the opposite. They are for cooling the motor, inverter, and maybe the controller - not sure about the last one, though.

[arnis]

Motor, inverter and onboard charger. Logic board does not get hot. Only power electronics (like inverter and charger,
both have losses, therefore lots of heat generated).
Well if your battery is like 10C above ambient, blowing air onto it would speed up cooling, but that only helps when
stationary and no charging/discharging/AC happens. And it's actually pointless.

[IssacZachary]

Motor, inverter and onboard charger. Logic board does not get hot. Only power electronics (like inverter and charger,
both have losses, therefore lots of heat generated).
Well if your battery is like 10C above ambient, blowing air onto it would speed up cooling, but that only helps when
stationary and no charging/discharging/AC happens. And it's actually pointless.

Temperatures vary as much as 25*C between night and day.

Why would cooling the battery be pointless? Apparently the battery temp hovers around 25-30C. So when it's 3 or 5*C and the battery is 25*C or hotter I'd think it would help. Possibly.

[arnis]

It is extremely unlikely to get anything more than 10 degrees above ambient (without DC charging).
I've tried. So if it is 5C outside, battery might get to 15C at most (without DC).
After DC battery will cool down within 3-5 hours to levels mentioned above.