Maintaining Settings During a Battery Change V8V

[Manx V8V]

I've decided to treat my V8V to a battery soon, everything is fine at the moment and this is purely a preventative measure as the age of existing battery is unknown, I've had the car for 3 years and the previous owner had it for around the same time and said he never fitted one during his ownership, so its around 6 years old minimum and I don't intend to wait until I start having issues.

My question is, will I be able to maintain the electrical settings by connecting a charger to the charge post/earth under the bonnet during the change over? something tells me that once the terminals are removed from the battery the circuit will be broken and the charger won't do anything?

I know I could achieve continuity by connecting to the actual terminal clamps, but given the lack of space behind the seat to work, the size of my hands, and the wriggling involved to get the old battery out and the new one in, it is very likely one or both clips will get knocked off.

Has anyone had experience of this please?

[R129 300SL]

Hi

Changed battery on my DB9 last week. Thought I would lose the radio and folding mirror on locking function. However just changed as normal and didn’t lose any radio presets or the mirror function.

[bignoise]

R129 300SL said:

Hi

Changed battery on my DB9 last week. Thought I would lose the radio and folding mirror on locking function. However just changed as normal and didn’t lose any radio presets or the mirror function.

Same when I replaced the battery on my 2012 V8V

[PatCub]

I would not use a battery charger/conditioner whilst you disconnect the battery as it may spike the voltage or current.
If you are worried about loosing settings I would use something like these memory savers from Draper, for an Aston personally I would use the power socket version is they stay live when the ignition is turned off.

https://www.drapertools.com/category-products/7725...

[Manx V8V]

Thanks for the replies guys, I was actually looking at those memory savers earlier and might order one of those.

[Graze01]

Manx

the secret is in the reset after connection of the new battery

turn the key to position one (but do not start the car) let it power up and check all the systems for about 15 seconds (or even 30 to be sure) . then turn it off before re starting the car

all systems should check themselves out & confirm ok & you shouldn't lose anything

Graeme

[Manx V8V]

Graze01 said:

Manx

the secret is in the reset after connection of the new battery

turn the key to position one (but do not start the car) let it power up and check all the systems for about 15 seconds (or even 30 to be sure) . then turn it off before re starting the car

all systems should check themselves out & confirm ok & you shouldn't lose anything

Graeme

Cheers Graeme.

[BlackV8]

Graze01 said:

Manx

the secret is in the reset after connection of the new battery

turn the key to position one (but do not start the car) let it power up and check all the systems for about 15 seconds (or even 30 to be sure) . then turn it off before re starting the car

all systems should check themselves out & confirm ok & you shouldn't lose anything

Graeme

That‘s the way to go. Did the same on mine and all worked flawless after waiting 30 seconds in position one.

[dbs2000]

For your own peace of mind, lift the shelf and have a look at the battery. There should be a some numbers printed on it so you can date it, chances are it is the original but it's worth double checking:

https://www.firestonecompleteautocare.com/content/...

[Manx V8V]

dbs2000 said:

For your own peace of mind, lift the shelf and have a look at the battery. There should be a some numbers printed on it so you can date it, chances are it is the original but it's worth double checking:

https://www.firestonecompleteautocare.com/content/...

Yes i'll have a dig and see thanks for the link, its a 2006 car so i'll be amazed if its still the original, but having said that I cant find any mention of a replacement in the extensive service history folder that came with the car.

[R129 300SL]

Mine was original Aston Martin Varta Battery.

Date code for these is stamped into either the positive or negative pole of battery. (Can’t remember which one). Mine was week 18 05.

[yellow_tang]

Replaced my battery as I had all the back trim out doing the rear speakers. No issues. Was disconnected for about 2 hours and no loss of settings or presets.

[gaussianmist]

Graze01 said:

Manx

the secret is in the reset after connection of the new battery

turn the key to position one (but do not start the car) let it power up and check all the systems for about 15 seconds (or even 30 to be sure) . then turn it off before re starting the car

all systems should check themselves out & confirm ok & you shouldn't lose anything

Graeme

Is this equally true for the early DB9s? Even the misfire correction factors? Aston1936 will find this interesting.

[Manx V8V]

R129 300SL said:

Mine was original Aston Martin Varta Battery.

Date code for these is stamped into either the positive or negative pole of battery. (Can’t remember which one). Mine was week 18 05.

Just been for a dig, mine is an original AM logo'd Varta, with.......................wait for it.............47/05 stamped on the neg post!! the car was registered in March 2006 so it's the original, it's over 13 years old, amazing!

What is even more amazing is the fact that the car is only used for weekend jaunts of around 30-40 miles, and it doesn't sit on a trickle charger during the week, yet it always spins up no problem.

I'd better get one ordered so this one can enjoy a well earned retirement!!

[Graze01]

gaussianmist said:

Is this equally true for the early DB9s? Even the misfire correction factors? Aston1936 will find this interesting.

Sorry I don't know the answer to that - have never owned a DB9

Maybe ask a dealer service manager as they must know

Graeme

[Dewi 2]

Manx V8V said:

Just been for a dig, mine is an original AM logo'd Varta, with.......................wait for it.............47/05 stamped on the neg post!! the car was registered in March 2006 so it's the original, it's over 13 years old, amazing!

My battery was the original and 9 years old. Working perfectly, but I thought I was pushing my luck with it.
Perhaps I had it changed 4 years too soon!

[gaussianmist]

R129 300SL said:

Hi

Changed battery on my DB9 last week. Thought I would lose the radio and folding mirror on locking function. However just changed as normal and didn’t lose any radio presets or the mirror function.

R129,

What year is your DB9? What about the window and seat re-setting? Did you lose your misfire correction factors? Did you do anything special to retain memory other than merely replacing the battery?

Thanks,
Jim

[R129 300SL]

gaussianmist said:

R129,

What year is your DB9? What about the window and seat re-setting? Did you lose your misfire correction factors? Did you do anything special to retain memory other than merely replacing the battery?

Thanks,
Jim

Hi

Mine is a 2005. Usually on earlier cars like mine I heard that the folding mirrors usually need reprogramming at the dealer after a battery change. My mirrors were fine and so were the radio presets.

Had to move seats back and forth to reset them though. Same with windows- up and down to reset.

Not sure about misfire corrections.

[gaussianmist]

R129 300SL said:

Hi

Mine is a 2005. Usually on earlier cars like mine I heard that the folding mirrors usually need reprogramming at the dealer after a battery change. My mirrors were fine and so were the radio presets.

Had to move seats back and forth to reset them though. Same with windows- up and down to reset.

Not sure about misfire corrections.

Methinks yours will have to be re-learned.