Outlander makes noise while off and charging

[sneakyoutlander]

My Outlander sometimes makes noise while it's off. (I think that it is during a charging state). It sounds like the low rumble of a clothes washing machine. Is this normal?

 

[user 3409]

Have you checked that the timed AC isn't programmed to come on automatically at certain times. If I program the remote pre-heater the car makes a low rumble while its on.

 

[STS134]

The PHEV system coolant pump will run intermittently during the charging process to keep the OBC cool. From measuring power in vs power from the battery (the miles/kWh meter on the car computer), the OBC appears to be about 85-90% efficient in converting the incoming AC power to DC and pushing it into the battery. But that means that there's still about 300-500W of heat that gets generated during the charging process and that's what is being removed from the OBC by the coolant.

 

[sneakyoutlander]

Thanks for the responses,

The timed AC isn't on, so i don't think it's that. Also, it was minus 15 degrees Celcius yesterday when it was doing this, and started shortly after i plugged it in. Would the coolant pump still run in that scenario?

 

[RoyM]

You can see this when opening the hood, the reservoir sits right up front, and the water/coolant will move when the pump is active