Main screen needs manual start
I have 2016 GLE 350.
Recently I am noticing that radio/navigation screen some times does NOT start on it’s own.
If you pick navigation it stays on the screen saying connecting….
Of course if I click ON button on volume dial it comes up.
Car cranks and starts fine.
Is this an issue with main 12V battery?
or is this auxiliary battery issue?
Thank you
Last edited by robertzee; Dec 27, 2025 at 10:20 AM.
Occasionally it does work as expected.
I had it on a trickle charge and going on a long drive (normally this car is not used much).
Also battery is more than 6 years old at least so time for a new one anyways...
I put the battery on trickle charge and next morning everything was working fine.
I drove to NH to NJ, PA and back.
Not a single problem.
Looks like main screen not turning on by itself is indication of a weak 12V battery.



