HI guys I wanted to go with the kids to a drive in movie but with the radio turning off every 12 mins I can not see me sitting there with the engine on for two hours , its a shame the FF 1800 watt system would of made for some great sound quality.Shame there is not a way of running the radio with the screen powered off and just the sound, but I guess running the 1800 watt system would require a second battery. Maybe this could be an option for the MY 15 model.

I wonder if they corrected this on the LWB one, as chauffeur tent to stay long period of times in the car from time to time.

in the meantime, use you iPhone to listen the radio  l=Oo\________/oO=l l:OolΞΞΞΞΞΞΞloO:l

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OK I don't have a L405 but I killed my battery completely at a drive in buy turning the screen and every thing else off bar the radio and overriding the shut down a couple of times .
How about a small quiet generator and a batterie conditioner ?
I did kind of think about this
The problem is you think nothing else is running bar the radio but in truth all the systems are awake and chewing amps  2008 MY Supercharged
Rimini Red / Jet
four zone climate
remote park heater
and no ugly kid windows.
magnus satis quod turpis satis

the L405 does have a second battery in the rear part of the big M3D audio option.

The problem is that LR seems to have missed the plot on the software again as the screen wakes the whole car up so loads of stuff is on !  Far to many gone...

Most modern stuff is similar - e.g. you only get a few minutes of radio with Mercedes COMAND before it turns everything off.

Porsche the same 10 mins Far to many gone...