Hi all.
I bought an L320 TDV8 MY2008, and these are the first driving days

This morning while I driving I saw on the Radio the "Low battery mode" message, so I went into the hidden menu for check the voltage.

at the minumum, (<1000rpm) the voltage is 11.5/12.0V above, it goes on 12/12.5.
Checkd also trought the Altox FBH app and I've the same values (approx)

any advice please?

Does it compensate when you load it with Heated windows and blower motors etc? You should see a fluctuation, then stability.
What's your battery history? Known new one of good rating/spec? 2011 MY D4 HSE
Previously 2001 D2 TD5, 1996 D1 300Tdi, 1985 90 2.2 petrol.
Bikes! KTM, BMW, British, Classics and others.

The battery is brend new, Bosch S5 100Ah.
The blower and the rear heater windows was on, I don't tried to turn it off.

I can try this afternoon

With a new battery, you should be seeing a change in volts when switching the loads in and off.
12.5v sounds low when having those running. 2011 MY D4 HSE
Previously 2001 D2 TD5, 1996 D1 300Tdi, 1985 90 2.2 petrol.
Bikes! KTM, BMW, British, Classics and others.

The battery is just a bit down and the car's system is reducing the electrical load - one of the first things is low power mode in the radio, if the battery gets lower the sound of the radio will be muted.

Simply give the car a good run and all should be good.

Garry 07MY RRS TDV6
Arctic Frost
Aspen Interior

I would expect to see around 14.5 V with the car at tickover and no extras running, but I would use a voltmeter direct on the battery for readings. 2010 RRS, TDV8
bali Blue / colour coded
side steps / flappy paddles
black perforated leather
22" overfinch
heated everything, TV,fridge ...... now with gold calipers and mud flaps !( black mud flaps that is) !!
Many years ago,,,,, 1955 series 1 landie , sometimes wish I had kept it

As above, with engine running 14v plus is what you should be seeing. Be aware that a faulty Alternator can take a battery with it when it fails.
There's usually little warning that it's about to go, and this may well be your heads up. Get a meter on the battery and check the running voltage with a load (fans/heated seats and screen etc.), and also off. Watch the meter as someone switches for you. 2011 MY D4 HSE
Previously 2001 D2 TD5, 1996 D1 300Tdi, 1985 90 2.2 petrol.
Bikes! KTM, BMW, British, Classics and others.

The voltage in the system will only be up around 14v for a short period soon after start - when the alternator has put power back into the battery from the start the alternator will lower voltage to around 12.5-12.8v if electrical loads are normal - sounds all normal for a battery slightly down - as i said go for a good drive and all should be good. 07MY RRS TDV6
Arctic Frost
Aspen Interior

One day after this post, battery light on dashboard for alternator failure

Replaced