philip wrote:On my w211, the fuse for the 12V port can go in two positions, one for always on, and the other for switched power. Be nice if other manufacturers did that.
While not always this way almost every American car I've owned have the cigarette
(ya I'm that old
) lighter socket always live, most German, Swedish, Italian and Japanese cars I've owned cut the power to the socket when the ignition is off.
I guess I prefer always hot but do use switched to my benefit also. For example on my Leaf I have a USB nub I plug into the lighter which not only provides 2.5a to either of it's 2 outlets but also has a display that cycles between amp draw for the USB sockets, voltage and temperature. Kind of a cool little thing and because the socket is switched I don't have to unplug it when I turn the car off, I also have one in our Prius used in the same manner. Now a Ford Freestyle SUV I borrow for a yearly camping trip has always on sockets. This comes in handy in two ways, one is for powering up a little pump to pump up our air beds, don't have to turn the ignition or car on. The other is for powering up a portable DVD player, again no need to keep the ignition on which would double the current draw. Again I see advantages of both, just depends and yes the option to chose either would be really nice although I doubt we'll ever see something like that again, companies are constantly trying to cut costs, not spend more on things that probably 1/2 of 1%(or probably less) would care about