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alan1965



Member Since: 22 Dec 2009
Location: Lincolnshire
Posts: 9

England 2014 Freelander 2 TD4 XS Manual Loire Blue
Low battery warning on radio display

Hi lads,After reading through our friend LARs technical ability i wonder if he or anyone else can explain this one.
i have looked through, but can't find any posts on this so if it has appeared before, my appologies.
During the last cold spell, All that lovely snow my FL2 went great. One night though whilst waiting for my Daughter with the car OFF with just the Drivers vanity light ON and my I-Pod playing i noticed a message on the radio display. "low battery". before i could photograph it on my mobile the vanity light went out and the radio switched off leaving the car in complete darkness. Oh my "*&. i hope it starts - and it did with no trouble at all.
I was sort of hoping it would appear again but it has not. i guess because i was only doing short journeys the charge was low.
I cant find any info in the manuals, is this a controlled shutdown to conserve power ? everything came back on when the engine was started. How exactly does this work? and at what voltage?Four weeks on and no more messages.
Any ideas anybody.

Thanks

Post #56761 25th Jan 2010 8:29 pm
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smellee



Member Since: 26 Jul 2009
Location: UK
Posts: 62

2008 Freelander 2 TD4 HSE Auto Stornoway Grey

Don't know the answer, but also happended to me twice. Once after installing the rear TV's and once when waiting in the car with the radio on for 10 minutes (engine off). Started no problems afterwards, but surely the battery wasn't that low.

Post #56777 25th Jan 2010 9:52 pm
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ad210358



Member Since: 12 Oct 2008
Location: Here and There
Posts: 7464

England 

Its happened to me also, only when listening to the radio with the engine off. Its as though there is a battery in the radio after about 15 mins its flat. When the radio goes off turn it back on again and its fine for another 15 mins. Could be some sort of timer to stop the radio being left on to flatten the main battery? p****d off with a Digital Keyboard Warrior

Post #56785 25th Jan 2010 10:52 pm
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lar



Member Since: 29 Nov 2009
Location: Yaroslavl
Posts: 251

Russia 2008 Freelander 2 TD4 SE Auto Stornoway Grey

I saw these words on my radio 2 months ago . The engine was off too. I thought that there would need to charge car's battery... and have made nothing up to now. But I don't think the radio has its akku 
Freelander II 2,2 TD SE Stornoway Grey

Sorry for my wry English. I began to study it recently.
I'll be thankful for your corrections of my mistakes

Post #56789 26th Jan 2010 6:04 am
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AndyC



Member Since: 30 Nov 2007
Location: Where the snow dosen't melt when the sun is shining!
Posts: 4165

Norway 2007 Freelander 2 TD4 HSE Manual Stornoway Grey

ad210358 wrote:
Its happened to me also, only when listening to the radio with the engine off. Its as though there is a battery in the radio after about 15 mins its flat. When the radio goes off turn it back on again and its fine for another 15 mins. Could be some sort of timer to stop the radio being left on to flatten the main battery?


I guess its something like a scarecrow for Freelanders Shocked
It cant be possible to flatten the battery by playing the radio all night if you want (if that was possible) - The radio power consumption very little as it is in other vehicles. 2007 Freelander 2 HSE TD4 Manual with Premium Pack & Moonroof.
Stornoway Grey with Ebony Black Pleather, Clear Indicators, Body Side Mouldings etc.

Post #56794 26th Jan 2010 7:41 am
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Boxer



Member Since: 26 Dec 2009
Location: S Wales
Posts: 354

Wales 2007 Freelander 2 TD4 GS Manual Zermatt Silver

Usually radios can be switched on with the ignition off for 20 mins.
They then go into battery saving mode effectively turning off.
It may be an incorrect message that is meant to read power saving mode.

Or there may be a monitoring threshold in the radio thats doing it. Don't put petrol in a diesel. They don't run well.

Post #56797 26th Jan 2010 8:29 am
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chicken george



Member Since: 05 Dec 2007
Location: N. Yorks
Posts: 13289

United Kingdom 2008 Freelander 2 TD4 XS Manual Santorini Black

auto power off I reckon, Is this a good time to point out that pouring two stroke oil into the cd slot is not a good idea? At work
At home

"I can't always believe facts I read on the web" - Charles Dickens

winner by default of the tractor vs caravan race

Post #56803 26th Jan 2010 8:57 am
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mcphersonstrut



Member Since: 21 Jul 2009
Location: In the land of 2 wheel drive and 60mpg
Posts: 2164

England 2008 Freelander 2 TD4 HSE Auto Stornoway Grey

Rolling with laughter and cue.... Boxer............

Post #56808 26th Jan 2010 9:10 am
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AndyC



Member Since: 30 Nov 2007
Location: Where the snow dosen't melt when the sun is shining!
Posts: 4165

Norway 2007 Freelander 2 TD4 HSE Manual Stornoway Grey

More like a Time To Go signal after being parked up a dark lane with a back seat dancer Thumbs Up 2007 Freelander 2 HSE TD4 Manual with Premium Pack & Moonroof.
Stornoway Grey with Ebony Black Pleather, Clear Indicators, Body Side Mouldings etc.

Post #56813 26th Jan 2010 9:36 am
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Boxer



Member Since: 26 Dec 2009
Location: S Wales
Posts: 354

Wales 2007 Freelander 2 TD4 GS Manual Zermatt Silver

chicken george wrote:
auto power off I reckon, Is this a good time to point out that pouring two stroke oil into the cd slot is not a good idea?


It's funny how quick you can go off some people. KCensoredB Don't put petrol in a diesel. They don't run well.

Post #56819 26th Jan 2010 10:08 am
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AndyC



Member Since: 30 Nov 2007
Location: Where the snow dosen't melt when the sun is shining!
Posts: 4165

Norway 2007 Freelander 2 TD4 HSE Manual Stornoway Grey

Boxer wrote:
chicken george wrote:
auto power off I reckon, Is this a good time to point out that pouring two stroke oil into the cd slot is not a good idea?


It's funny how quick you can go off some people. KCensoredB


Oh you get used to him Rolling Eyes - been even worse since buying iffy wheels Yawn 2007 Freelander 2 HSE TD4 Manual with Premium Pack & Moonroof.
Stornoway Grey with Ebony Black Pleather, Clear Indicators, Body Side Mouldings etc.

Post #56822 26th Jan 2010 10:29 am
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chicken george



Member Since: 05 Dec 2007
Location: N. Yorks
Posts: 13289

United Kingdom 2008 Freelander 2 TD4 XS Manual Santorini Black

Evil or Very Mad only messing fella At work
At home

"I can't always believe facts I read on the web" - Charles Dickens

winner by default of the tractor vs caravan race

Post #56823 26th Jan 2010 10:32 am
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AndyC



Member Since: 30 Nov 2007
Location: Where the snow dosen't melt when the sun is shining!
Posts: 4165

Norway 2007 Freelander 2 TD4 HSE Manual Stornoway Grey

s Censored ts on you first then try's to wipe it off when you complain Rolling Eyes 2007 Freelander 2 HSE TD4 Manual with Premium Pack & Moonroof.
Stornoway Grey with Ebony Black Pleather, Clear Indicators, Body Side Mouldings etc.

Post #56825 26th Jan 2010 11:00 am
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alan1965



Member Since: 22 Dec 2009
Location: Lincolnshire
Posts: 9

England 2014 Freelander 2 TD4 XS Manual Loire Blue

Thats a few good answers and theories that all make sense. If it comes back i'll take a picky, but a power save message gone wrong in translation - ENGLISH to english is favourite. Thumbs Up
I'll ask next time i'm near the dealer.
thanks for the humour lads - it always helps. if there is nothing doing on the box,this site can always make us laugh Laughing
great site, and owners manual-keep it coming Lar Very Happy

Alan.

Post #56859 26th Jan 2010 2:07 pm
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alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4642

The workshop manual states:

"The audio head unit incorporates a power management function. Should the vehicle battery level drop below a predetermined level (about 12.3V) the unit will limit its functionality to avoid further battery discharge, displaying the message "Low Battery"".

So in conclusion, with engine switched off, after a while (and, of course, temperature dependant), the voltage could drop below 12.3V, if audio and any other consummer is on. So the audio power management is kicking in and display that warning, taking proper actions.

But beware, this is a message displayed _only_ by the audio system, so if the audio is _off_ and you draw power from battery with other loads, you could discharge the battery _without_ any warning.

Post #56876 26th Jan 2010 3:55 pm
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