Just curious-- After several hours of not running, I open the driver door and hear a pump of some kind start up and run under the hood. Runs for a while then stops. How long seems to depend on how long the car has sat there, but about 30 seconds max. Anyone know what it is?
I think I read in another thread that it is the power brakes adding some pressure so you have instant braking just in case you run in EV mode briefly.