Correct Way to Use Accessories when Not Running?

[smr2112]

So can anybody tell me the correct way to use accessories (ie, listen to the radio) when the car is off and not]

running? What will waste the least of the 12V battery. This is with the push button start and I/A key I should say.

 

This was fairly easy with my 2010 FFH, I'd just turn the key to accessory and then blank out the display and

I could listen for 20 minutes (in 10 min cycles) without any real drain on the battery.

 

Unclear the best way to do this without the displays lighting up. I can go into settings and turn the

display off, but something tells me this still may be draining the 12V battery more than it should.

 

I know a quick start press with no foot on the gas puts it in accessory mode, but not like the

accessory setting with the key ignition.

[smr2112]

Experimented with this a bit... Was after just listening to the radio while

sitting in the car with minimal battery drain.

 

If car is off...

 

Seems like with foot the brake, hit the START/STOP once, hit it again to turn off and

the radio should stay on. Then on the MFT display, hit SETTINGS, then hit DISPLAY OFF

blanks the display (there is no hard button)

 

If car is running...

 

Just hit the START/STOP once to turn the car off and following the DISPLAY OFF

instruction in the above step.

 

Car will shut off in 10 minutes and you'd have to repeat this again.

[acdii]

I just tap the button with foot off the brake, turns on acc mode, then you are good for about 20 minutes until battery saver kicks in, then start over.

[smr2112]

When you just turn it on once, doesn't the Engine light stay lit - which in the old days meant

you may be draining more of the battery than you want to. When I hit the button the 2nd

time, the engine warning light goes out.

 

The car is really off at this point, with just the radio remaining on. Which is what I was

after. Just like if you turn the car off after driving, the radio remains on.

 

I am doing this from memory, so I could be wrong, but I thought I got it to behave

the way I wanted last night (ie, the engine light goes out).

[srogers]

I'm not sure which radio you have but with the Sony system you don't even need the key to turn the radio on. If the car is not running just press the radio button and the radio will power on. No key needed.

[smr2112]

Oh duh, surprise, I leave it on all the time, so if I just get into the car

and I can try just hitting the Sony radio power button and that should

just go on and solve my problem.