Does anyone else hear a faint hiss coming from what seems like the front and rear speakers? You can hear it with the car totally off, or with the car running and the radio off.

My MA heard it as well when I pointed it out. He had no explanation. We went into another All4 and it had the same hiss. Can't hear it once you are driving with the radio on of course, but it's still something strange since it continues once the car is off.

 

<bump> Nobody? Maybe it's just in H/K Sound Systems...

 

Yep, I hear it too! It seems like its always there even when system is on or off. Little annoying but, tolerable..

 

I hear it too. As others have said, annoying but tolerable. I have the H/K system too. But I really enjoy the car. 3k miles so far.

 

I just picked up my 2013 CMS today. It has the H/K system. Same hiss as described above when the car is off (I even removed the key). I'm afraid it'll drain the battery.

Does anyone NOT have this hiss? If so, do you have the H/K system or not?

 

That faint hiss is the audio/bluetooth system remaining active for a pre-set amount of time ( something less than 30 mins as I recall) so that you can still feed a call through the car's audio system with the ignition off.

 

Whew, good to know! Thx!

 

Yep. Mine too.

 

HK here. I just figured it was the Mother Ship trying to contact me again...