Member Since: 29 Jul 2011
Location: Ruralshire
Posts: 593
When should I replace my battery
The Bosch AGM battery in my D4 is coming up to 5 years old and 37K miles (I know - I should get out more ).
Not experiencing any problems with starting although it sometimes warns me to start engine. Through the winter I leave it connected to a CTEK charging through the tow socket to ensure the FBH will work.
In the grand scheme of things the cost of a new battery is minor, so is 5 years a good run and should I replace it soon before problems start ?
Would I need to get the dealership to reset the BMS if I replaced it myself with exact same battery type (not got an IID) ?
Anything else to watch out for if I do the replacement myself ?MY12 D4 HSE Ipanema Sand
6th Oct 2016 10:54 am
DrRobH
Member Since: 10 Oct 2015
Location: Hampshire
Posts: 924
Personally I would wait until it starts to play up. Be good to suss out the best value replacement beforehand though. I bet of you bought it from a dealer they would do the BMS reset and fit it if you haggle as part of purchase price.....Visitor from fullfatrr.com
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6th Oct 2016 12:52 pm
bow9487
Member Since: 22 May 2016
Location: Cardiff
Posts: 15
Had to replace the battery in mine at the beginning of the week. Called Stradstone in Cardiff was quoted £280 plus VAT excluding fitting. Mine isn't a AGM battery and they are more expensive so would of thought an AGM price would be higher. I have a mongoose and JLR SDD, I picked up a Yuasa Silver HSB019 (900A 110Ah) For £119 the mongoose was £60 and I programmed a custom version of JLR SDD that I reset the Battery Adaption Values with. If you include the Diagnostics which I already had all in all £179, much cheaper than Land Rover and a higher Ah batter
21st Oct 2016 1:42 am
sean 471
Member Since: 26 Apr 2011
Location: Sheffield
Posts: 2990
I think at 5 years it's getting near to replacing it. It might be worth getting it tested but with winter soon it will be working harder and when it goes a whole host of other problems might manifest. So I would change it now for what it costs.
To some extent it depends on how long you expect to keep the car.
If you know you are going to change it in the next 3 to 4 years you might as well fit the new battery now & have the benefit of it. If you intend to keep it another 5+ years I might be tempted to take a risk & hand on for another year or so, on the basis that I wouldn't want to change the battery twice during my ownership, or just before I sell the car.
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21st Oct 2016 9:20 am
D4mation
Member Since: 29 Jul 2011
Location: Ruralshire
Posts: 593
Thanks for your responses chaps.
I can't afford to replace the car and I've had it since new with hardly a problem and with the lowish mileage I'm going to hang on to it.
Having just checked the battery spec mine is not a Bosch, it's an Exide AGM type 90aH 850A AGM/VRLA/MF BH42-10655-BA.
Robbie said it was OK and he seems to know a lot about this sort of stuff.
The one at justcarbatteries is still listed for £150 delivered and a 6 year warranty so will likely get that one. http://www.justcarbatteries.co.uk/index.ph...ttery.html
Robbie's tip was to let the car sleep, then remove the negative lead first and replace it last, as well as leaving the car unlocked and a window open, as a precaution.
I don't have an IID or similar so am I going to have a problem with the Battery Monitoring System if I swap from Exide AGM to Bosch AGM, similar spec batteries ?MY12 D4 HSE Ipanema Sand
21st Oct 2016 12:54 pm
deanslandy
Member Since: 17 Jan 2015
Location: nuneaton
Posts: 646
Hi, just had RAC replace mine on my 07 D3, he said it still had original battery fitted Belts, oil pump casing and water pump by Flack
Transmission flush by Geoff
21st Oct 2016 12:59 pm
Dudleydisco
Member Since: 20 Jun 2014
Location: York
Posts: 853
D4mation wrote:
I don't have an IID or similar so am I going to have a problem with the Battery Monitoring System if I swap from Exide AGM to Bosch AGM, similar spec batteries ?
Swapping from Exide AGM to Bosch AGM isn't what causes the BMS problem, it's the fact it's a new battery! The BMS needs to know when a new battery is fitted as it resets it's charging algorithms, which is also why batteries should never be charged with the charger connected to the -ve post on the battery but to chassis Ground instead.
You may be able to find someone near you who has an IID or similar who could reset the BMS for you. D4 MY14 XXV - RLD/IID BT
D4 MY13 HSE Lux - RLD/IID BT
P38 RR - Sad parting
110 - Even sadder parting
S3 88" - Still going strong after 23 years of ownership
Not experiencing any problems with starting although it sometimes warns me to start engine. Through the winter I leave it connected to a CTEK charging through the tow socket to ensure the FBH will work.
Myself, I'd leave it till I started to get the signs of problems, it will let you know when it needs a new one. The "start engine" will be the message you get after listening to the radio for a few minutes with the engine off, a new battery will not stop that. Yours is the same age as my previous one, if my battery was low in the depths of winter, to many short journeys, FBH running etc, as soon as I would get in the D4 and put the ignition on, I'd get "low battery" across the main screen displayed, a night on the Ctek would solve it for a week or so.
Member Since: 29 Jul 2011
Location: Ruralshire
Posts: 593
I'm Billy Nomates so don't know anyone with an IID.
I think I'll heed Washwipes advice and go through another Winter with my CTEK attached.
I have never had any warnings, bongs etc with this car, so what are the early signs of an end of life battery ? I don't want to be stuck somewhere with the damn thing refusing to start, especially with the caravan on the back.MY12 D4 HSE Ipanema Sand
21st Oct 2016 8:26 pm
bow9487
Member Since: 22 May 2016
Location: Cardiff
Posts: 15
Hi D4mation, I travel to Caldicot (Hour or so from here i live) to where i work. I know its a bit of a drive from Hereford but if you wanted to come that way i could help you replace the Battery and i have JLR SDD so i can reset the BMS for you
25th Oct 2016 6:06 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
D4mation wrote:
I'm Billy Nomates so don't know anyone with an IID.
I think I'll heed Washwipes advice and go through another Winter with my CTEK attached.
I have never had any warnings, bongs etc with this car, so what are the early signs of an end of life battery ? I don't want to be stuck somewhere with the damn thing refusing to start, especially with the caravan on the back.
Well worth fitting one of these so cheap its funny and are actually pretty accurate, but more importantly gives you a baseline figure to work from and if that changes you know you may have issues coming sooner rather than later.
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