Folks, read a lot of the previous threads on battery performance and the FFRR but not seen this one covered so would love to hear what you guys think of what I'm being told by the dealership

Despite some long journeys and a full night on charge, the ignition only needs to be on for 2 or 3 minutes before a warning message is displayed saying words to the effect of battery low, start engine. This of course means anything like park heating / venting get shut off immediately (or wont even start)

I phone sales guy who speaks to workshop manager....now I'm being told that if the battery on a range rover gets low, even after a full recharge the car wont recognise it has been charged until the "battery management system" (or something like that) has been reset and that a reset is a worksop thing not something I can do myself.

That sounds b*****ks to me (sorry if they are being kosher) but the way I translate that... is that every time any Range Rover gets a flat (or poorly performing) battery, after charging it yourself you still have to go to the dealers to get this management system reset.

Cheers
fleagle.

(2011/8 MY) V SE

I seem to remember that around your model year there were a number of issues with the batteries and some cars had updates to one of the ECUs (as well as a new battery) in a recall.

Maybe your car never got the recall ?? Or just bad luck on the battery. MY 2010 5.0 SC Galway green and sand interior!!
Have the Faultmate MSV2 Extreme to be tinkering with the settings etc. !!

"battery management system" (or something like that) has been reset and that a reset is a worksop thing"


Yes this is correct but often can mean the Voltage regulator module is playing up , had the same thing even after a recall for new battery on a 2011.5 MY and a software update.

PS it says low battery when it really is not and will never fail to start by the way Far to many gone...

Have you spoken to the last owner and asked whether he had this problem?

You never know he may tell you the truth!

. 2009 Vogue TDV8 Nara Bronze
2002 Vogue V8 Zambezi Silver
1986 90 Pick up Deep Bronze Green
1978 Series III SWB Deep Bronze Green

yeah - whenever the "low battery ....start engine" comes on the engine starts absolutely fine. But clearly the battery has lost its edge as you can't run any ancillaries for more than a few minutes before the message comes on so thats means it's pointless using things like park heating / venting (something I specifically wanted) as it has no chance given that they swallow so much of the battery charge. CD player / sat nav / blowers etc all cut out until engine is started.

When I collected the car, I spoke to the workshop manager who claimed that the car had had all the latest software updates and service bulletins that were relevant to it.

Dealer coming out this afternoon to collect for an investigation....leaving me an Evoque

thanks.

To start with I recommend that you take a good look at the battery.
Even though it shows or displays a 'full charge', it may have lost its ability to hold the charge.
I had all the usual symptoms of random warnings appearing sporadically inc air susp and transmission failure, all caused because the Alternator was not working correctly and over time ruined my battery.
Once the Alternator and battery were replaced, it has been as good as gold.......so far.
It seems the slightest voltage variation on these motors upsets them and sets off all the warnings, most being false!

Hope you get sorted.

Regards

Andy

sounds to me that you should check....you have the AGM battery
that both ECU upgrades have been done

the reset thing with the garage is a load of billy rubbish. tell the garage that you want a level battery management system. is what i had put onto mine after months of arguing with HQ, and with 2 different stealers telling me a pack of lies.

now i have no problem.

The battery on the car is branded as a Varta (has a small Landrover Jaguar sticker on it). Dealer tells me that is a standard fit. Been on the car since new apparently.

Sorry I have no idea what a "level battery management system " ??

cheers
fleag.

depending on when your MY11 rolled off the production line, it will have a standard battery or AGM type.
have a closer look and see what type of battery you have.

If it is not AGM, then this suggests you have not had the ECU upgrades.

the battery management system on these was designed so that when the battery was fully charged, the system would stop charging as is usually the case in cars. It gives a very very marginal improvment in MPG. so marginal, you wont see it. ie the battery only gets charged when it reaches a low state according to the vehicle battery management system.

i told LR, that if i was that bothered about MPG, i would not have bought a 4.4 litre engined car that weighed more than 2 tonnes, with the aerodynamics of a brick. and told them to put an old fashioned level battery management system onto the car so i dont get the "battery low" warning. eventually this is what Gaydon HQ did.

Sorry for being thick, so is it generally regarded to be better to have an old fashioned battery type or an AGM ?

If it is currently an AGM, is it a big job for them to switch it back to a level type ? do the ecu / alternator / voltage regulator/rectifiers also need changing hence cost and LR's reluctance to do it ? or is it just a change a change of battery and job done?

I cant tell now whats on mine as it is back in the dealership.

Cheers for all the help.

The advantage of the AGM is that it is quicker to charge, and therefore more suitable for the battery management system that LR designed for the MY11 onwards, and also that it should be able to start the engine when only partially charged.

I had Gaydon HQ check out the AGM battery installed in my FFRR.
It was faulty. so they changed it. Lying stealer claimed there was nothing wrong with it.
Was told that "battery low" would come on when temperature was below 7 degrees, and that FBH would only operate below 5 degrees.

HQ gave me new battery. reflashed the ECU upgrades. installed a level battery management system.
not had a problem since.

well....dealer fitted a brand new battery. (AGM type)

I'll see how it goes.

Does anyone know for sure if there was a technical bulletin to flash the MY2011 battery management with improved settings to get round this AGM battery type problem and was it mandated or only to be done if owners reported problems ? Dealer claims there is no reprogramming needed.

cheers

It's a bit vague as really it was the 10MY facelift models with the 3.6 which had most attention.

There is a TSB relating to changing the battery type which does mention following the battery replacement application on SDD. The TSB states that a vehicle with the AGM battery in it should not be replaced with the earlier flooded battery.

However, if changing the battery from the earlier type to the AGM on the 3.6, there is a Service Action (Q159UK) showing how to physically install and then update the HeVaC and Instrument Pack software accordingly.

Your 4.4 should have had the AGM from the start. Perhaps this has confused the Dealership?

the early 4.4s had the problem

if you search the forum, you will find the answer. if you had the original non AGM battery, then the upgrades have not been done.

There was a a ECU flash and a battery regulator module

also when the battery is changed you have tell the car its been changed via there software so the regulator can reset to charge the new battery to the correct voltage , all this is on the standard bulletins to dealers for 2010 cars onwards but aimed at 2011 onward cars that had the Batt change , regulator change and the software update. Far to many gone...