Hi all, bit of advice really, i had a non start issue yesterday with HDC inactive and charging fault, battery light on all the time so i have replaced the battery today, cleared all faults, the battery light has gone out when starting, but the iid tool is showing 11.2v so i double checked with a meter on the battery and that shows the same, does any one think that this will be the alternator?, bear in mind no battery light on and no faults showing do i need to re-set the battery? if so exactly how do you do this?, i don't want to book it in to get the alternator done, when only a reset is required, i have done a search for resetting the battery but have come up short in exactly how to do this

Can anyone offer any advice on the above? btw its a 4.4 tdv8 my2011 2011 4.4 tdv8 autobiography black
2006 td6 vogue buckingham blue
2000 p38 Holland&Holland gone, best car i ever had
1998 p38 vogue oslo blue gone
1998 50th edition v8 defender gone
1997 200 tdi defender red gone
1995 4.6 defender 90 green gone

Not sure what you mean by reset the battery but someone else might ( only thing I know is to reset all computers etc is to disconnect both battery leads and tape them together for 20minutes)
If only getting 11 volts showing when engine running would point to alternator not putting out a charge ( check to make sure belt is good )

Hi should have 14v at the battery terminals with the engine running so looks like your alternator to me but check belts first
Peter

belt is fine i can see it going round  2011 4.4 tdv8 autobiography black
2006 td6 vogue buckingham blue
2000 p38 Holland&Holland gone, best car i ever had
1998 p38 vogue oslo blue gone
1998 50th edition v8 defender gone
1997 200 tdi defender red gone
1995 4.6 defender 90 green gone

That's a shame as would have been the cheap part to replace
It points towards the alternator not putting out a charge (which will be expensive)

+ 1 for an alternator issue. Should have 14v running. As suggested check the belt tension as the tensioner failing is a common issue. 2007 Vogue TDV8 in Zermatt Silver with Charcoal

i think it is the alternator, its just throwing me because the battery light goes out on starting and there are no faults showing on the iid tool, so if you didn't check the voltages directly you wouldn't know 2011 4.4 tdv8 autobiography black
2006 td6 vogue buckingham blue
2000 p38 Holland&Holland gone, best car i ever had
1998 p38 vogue oslo blue gone
1998 50th edition v8 defender gone
1997 200 tdi defender red gone
1995 4.6 defender 90 green gone

Do you have a local auto electrician, they would be able to tell you for sure if it's the alternator or something else

I've had an alternator give up on me but did not show a red ignition light on dash

no worries on that one i can do it myself, as i said its throwing me because its acting as normal no faults and normal operation of the battery light, before i swapped the battery the battery light was on permanently, that seems to have cleared, and that's what is confusing me, hence the battery re-set question, as i know the charging system is not "as ordinary", smart charging i think its called although someone with greater knowledge may disagree 2011 4.4 tdv8 autobiography black
2006 td6 vogue buckingham blue
2000 p38 Holland&Holland gone, best car i ever had
1998 p38 vogue oslo blue gone
1998 50th edition v8 defender gone
1997 200 tdi defender red gone
1995 4.6 defender 90 green gone

If you do eventually need to change the battery, then the battery replacement reset is in the “Body control menu” section of your iid.
Mike. G reg 2.5VM Vogue Portofino red 1991- 1999
V reg 2.5td P38 Rioja red 1999- 2006
53 reg td6 Vogue Oslo blue 2006- 2015
11 reg 4.4 TdV8 Vogue SE. Baltic blue 2015- date.
https://www.fullfatrr.com/forum/topic56162...tty+affair

ahhh thats the info i was looking for, prob is the alternator then, i would still like to know how to reset the battery though?????, 2011 4.4 tdv8 autobiography black
2006 td6 vogue buckingham blue
2000 p38 Holland&Holland gone, best car i ever had
1998 p38 vogue oslo blue gone
1998 50th edition v8 defender gone
1997 200 tdi defender red gone
1995 4.6 defender 90 green gone

ok mike, but where? i can't see it in there, i can see a list of battery types but no "reset" button as such or am i being stupid??  2011 4.4 tdv8 autobiography black
2006 td6 vogue buckingham blue
2000 p38 Holland&Holland gone, best car i ever had
1998 p38 vogue oslo blue gone
1998 50th edition v8 defender gone
1997 200 tdi defender red gone
1995 4.6 defender 90 green gone

The charging circuit is designed for the AGM battery. I believe it is progressive but you should still have 14v with the engine running especially with a new battery fitted. 2007 Vogue TDV8 in Zermatt Silver with Charcoal

yes so i understand, but only 11.5v  2011 4.4 tdv8 autobiography black
2006 td6 vogue buckingham blue
2000 p38 Holland&Holland gone, best car i ever had
1998 p38 vogue oslo blue gone
1998 50th edition v8 defender gone
1997 200 tdi defender red gone
1995 4.6 defender 90 green gone