DISCO4.COM - View topic - Low battery warning survey help

lespes

Member Since: 17 Sep 2009
Location: Sitting Down
Posts: 2232

2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini Black

Low battery warning survey help

Using the dash timed climate was only possible once or twice before it failed due to the low battery warning coming on . With a full battery re charge using c-tek it would then work once very rarely twice. The battery would appear to of been 75-80 percent discharged

Warmer weather came so not then an issue.

On first service had investigation by garage who felt the dual battery Traxide systen was a fault. Pointed out fault was there before this was fitted and had worked perfectly OK on RRS for 3 years. Subsequent investigation found landrover update on faulty battery monitoring systems and fitted new one.

Now it has been showing the low battery warning much sooner with the doors open or radio on without engine running than before, howver when looking to re charge it it would seem to be only 40-50 percent discharged.

I have a feeling reading some other posts that those using the remote control do not seem to suffer the same problem as those using the dash timer option .

Was trying to add poll to see if dash operation caused more problems than remote option and how discharged roughly battery was before low battery warning comes on, but it all has gone wrong , perhaps a mod could sort it out for me

D4 Landmark MY16 Santorini Black THE LAST
D4 HSE MY12 Marmais Teal: Gone. Missed a lot!
Freelander 2 SD HSE MY11 Silver:Thankfully gone.
D4 HSE MY11 Silver: Gone missed !
Range Rover Sport MY06 HSE Buck Blue: Gone missed!
Discovery D2 TD5 Facelift MY Red Gone Missed!
Discovery D2 TD5 Cobalt Blue: Gone Missed!
Discovery D1 Auto Oxford Blue Not missed at all!
Discovery D1 Avalon Blue First LR! missed!

Now demoted to a VW

4th Sep 2012 8:54 pm

wiggs

Member Since: 03 Sep 2006
Location: Manchester
Posts: 14372

2015 Discovery 4 3.0 SDV6 HSE Auto Fuji White

Remote makes no odds ....if the car thinks its got a low battery ... You'll get the warning and nothing works

Iv had this issue from new ... New battery monitor ... Even worse

Disconnected the second battery... Still the same .

My main issue is I can drive 200 miles ... Get out the car... Five mins later get in ... Low battery.

Alternator apears ok , battery replaced ( worked for about a month ... Then it all started again )

Even will all my gadgets ... There's only a black vue camera in the front that's off the battery ... All other stuff is on ignition G4 Gone ...but not forgotten

4th Sep 2012 9:18 pm

lespes

Member Since: 17 Sep 2009
Location: Sitting Down
Posts: 2232

Random thought on one issue has anyone got any ideas on putting switch ion dash that could kill the system to stop it draining when doors are open etc

Wiggs: yours sounds worse than mine, suppose that should make me feel better

D4 Landmark MY16 Santorini Black THE LAST
D4 HSE MY12 Marmais Teal: Gone. Missed a lot!
Freelander 2 SD HSE MY11 Silver:Thankfully gone.
D4 HSE MY11 Silver: Gone missed !
Range Rover Sport MY06 HSE Buck Blue: Gone missed!
Discovery D2 TD5 Facelift MY Red Gone Missed!
Discovery D2 TD5 Cobalt Blue: Gone Missed!
Discovery D1 Auto Oxford Blue Not missed at all!
Discovery D1 Avalon Blue First LR! missed!

Now demoted to a VW

4th Sep 2012 10:03 pm

drivesafe

Member Since: 23 Feb 2006
Location: Gold Coast, Australia
Posts: 867

Hi Wiggs, do you have any cranking battery voltage readings? 2008 TDV8 RR Lux + 2009 D4 2.7

14th Sep 2012 9:47 am

kp

Member Since: 27 May 2011
Location: Sticking the Ex back in the skanks bin
Posts: 2824

IIRC similar age FF's have the same issue and there has been a recall.

They basically replaced the batteries with AGM ones and changed the climate feature to run for 17 mins instead of 30.

A few found their cars barely warmed up in that period as it wasnt long enough to heat the water in the circuit and then transfer that heat to the air in the vehicle

FFRR Owner, very nearly became a D3 owner

Test piloted a new D4 XS SDV6.. Gone and being forgotten i hope!!
D4 HSE 10MY
D4 XS 11MY
SSRR Destroyer *2

14th Sep 2012 10:08 am

wiggs

Member Since: 03 Sep 2006
Location: Manchester
Posts: 14372

drivesafe wrote:
Hi Wiggs, do you have any cranking battery voltage readings?

no but i will get some figures Monday as im just off away for the weekend G4 Gone ...but not forgotten

14th Sep 2012 10:15 am

drivesafe

Member Since: 23 Feb 2006
Location: Gold Coast, Australia
Posts: 867

Cheers Mate. 2008 TDV8 RR Lux + 2009 D4 2.7

14th Sep 2012 10:20 am

Disco_Mikey

Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20842

2005 Discovery 3 TDV6 HSE Auto Cairns Blue

AIUI, the Disco 4 only re-charges to its last known level of charge (if that makes sense...)

What happens is that the alternator does not charge beyond the previous level, so a trickle charge is needed to get it back up to full capacity, and can then fully re-charge next journey

wiggs wrote:
Alternator apears ok , battery replaced ( worked for about a month ... Then it all started again )

Which would tie in with your issue Wiggs, new battery and was fine for a while, but I presume you would have already tried that... My D3 Build Thread

TDV8 Retrofit Build Thread

14th Sep 2012 5:22 pm

wiggs

Member Since: 03 Sep 2006
Location: Manchester
Posts: 14372

yes ...i give it a good charge every now and then ... then its fine for a few weeks .

so whats the work around ...i shouldnt have to charge my own battery ...and im doing about 1000 miles a week .

iv put my drop tester on the battery many times ..and its always low .

Tim ...not had time to do any real tests ...but chucked my multimeter on today and set to record minimum volts

10.36v cranking ( with or without the traxide kit attatched )

hopefully have some time tommorow to do some better ones

G4 Gone ...but not forgotten

18th Sep 2012 5:59 pm

gseum

Member Since: 15 Feb 2010
Location: Germany
Posts: 167

Hi wiggs,

I also have a second battery in my LR4. But I disconnected my T-Max Dual Battery System due to very bad performance of the generator charging my main battery!

After a lot of investigation and lots of differenet states of the two batteries I have the conclusion that the BMS (Battery Management System) of the Disco 4 is to sensible for a second battery simply connected via relay:
- the voltage at the main battery changes because the two batteries are never at the same state
- the BMS will then reduce the generator power (with a full second battery the generator will only give 13,5V for example)
- so the main battery will not be charged properly

I only see the possibility to separate the two batteries with a 12V to 12V charger, which charges the second battery and reacts as a normal electric "consumer" to the main battery side. The CTEK D250S Dual has a lot of features, but it does the separation and has the opportunity to charge the second battery also via solar module.

Greetings from Germany
gseum Discovery 4/LR4 HSE 5.0 V8 MY2010 // Volvo XC60 II T8 Inscription Fusion Red MY2020 // Hyundai Kona Electric Trend MY2020 // Bürstner TravelVan 620G MY2020

18th Sep 2012 5:59 pm