Disco 3 (LR3) New Battery Reset

Just a quick one people. Fitted a new battery to the D3. Do I need to reset any settings with the GAP iid ?.
Thanks.

yes.
Go in and tell it new battery /size.
Think D3 is same as L322.
J

Even if it's identical, you still need to tell the system is a new battery

No just fit it and dont worry.

D4 is totally different and has to be told what type of battery has been fitted.

Thought the d3 had a smart alternator?

kermit_rr said:

Thought the d3 had a smart alternator?

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It has but as the d3 battery is lead acid no worries, d4 can have lead acid or agm (stop/start I think?) hence the need to tell it whats what, as agm wont take the higher volatge a lead acid one will.

lynall said:

It has but as the d3 battery is lead acid no worries, d4 can have lead acid or agm (stop/start I think?) hence the need to tell it whats what, as agm wont take the higher volatge a lead acid one will.

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Smart alternators I've seen will up the output to compensate for older, dying batteries. They need to be told it's a new battery do the charge profile resets, thus not cooking a new healthy battery

Not on the D3 yes on a D4

kermit_rr said:

Smart alternators I've seen will up the output to compensate for older, dying batteries. They need to be told it's a new battery do the charge profile resets, thus not cooking a new healthy battery

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The ECM is able to determine the state of the battery, new or old, simply because it only uses a standard lead acid.
So all it needs is a replacement battery, then the ECM will test its function over the next few miles, and tell the alternator to charge accordingly.

kermit_rr said:

Smart alternators I've seen will up the output to compensate for older, dying batteries. They need to be told it's a new battery do the charge profile resets, thus not cooking a new healthy battery

Click to expand...

I think the audis are like that, I have also changed a few batteriss on them, just straight swapping they were fine all the time we had the cars.

Obviously the D3 isn't as smart as I gave it credit for.
Still everyday a school day.

J

marjon said:

Obviously the D3 isn't as smart as I gave it credit for.
Still everyday a school day.

J

Click to expand...

It's pretty clever, as the ECM can read the battery voltage drop off when an electric load is applied, so can calculate its actual capacity.
Obviously when an old battery is replaced by a new battery, the voltage drop under load is less, so the ECM tells the alternator to charge accordingly.

Ok it's not a true smart system, but it's far from a dumb system.