Originally Posted by
rongeur
I recently upgraded from Symphony 2+ to a RNS-e unit. Installation went very smooth and unit functions great however I noticed that when all power is off (key off and out) I can still turn on the unit and despite turning the unit off l, I can hear a very faint hum from all the speakers with my ear up next to them. I noticed it when washing the car and wiping out the door sills.
Is this normal? My primary concern is that I will come out to a dead battery one day. I already had to charge my battery once after about 30 min of setting up all the menus with the car off (my fault)
: The fan running and the hiss through the speakers is normal behaviour.
The easiest checks for a correctly wired harness are:
- does the RNS-E screen blank when you turn the ignition off;
- does the illumination come on when you turn the sidelights on.
If both these happen then there's a pretty high probability that the harness you have is OK.
The RNS-E does NOT turn off when you turn the ignition off, that just blanks the screen and disables the controls (except the on/off button).
The RNS-E only actually turns off when the first of these happens:
- you lock the car;
- 30 minutes after you turned off the ignition.
Until then the fan can run, and the speakers will hiss (as the amp is still turned on).
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