C

Chainsawuser

New Member
Hi
I need to replace the battery on a 2012 Freelander 2 XS.
I've replaced batteries on older cars before without problem. But on this car with lots of electrics am I likely to have any issues with radio codes, immobiliser codes etc caused by temporary disconnection of 12v supply ?
Thanks
 
Make sure you have the key in your pocket and leave the driver's door open before disconnecting the old battery. And when connecting the new battery, make sure you connect the final terminal post swiftly, without sparking and messing about.

The only thing that will happen, is the radio pre-sets will be lost, and maybe the trip meter data.
 
Has it got stop/start? If so the battery monitor system needs resetting to say it’s got a new battery fitted else you’ll knacker the new battery as the car will be overcharging it
 
Thanks for the replies. It's not my car but I've never noticed that it has stop/start. It's an automatic, do you get stop/start on automatics ?
 
If you fit a new battery to a FL2 it will sense it's new over a small number of drive cycles and alter the way it charges it. You can of course reset it sooner with diagnostics if you want.
 
I always hear across all makes about the BCM needing reset, I call BS on that - unless of course you change battery capacity that would need an update to keep things right.
but like for like swap - would be the same as winter and summer driving in my opinion - the whole point of it is to know how much power is being used and therefore how much to charge if my understanding is right.
 
SWalker said:
I always hear across all makes about the BCM needing reset, I call BS on that - unless of course you change battery capacity that would need an update to keep things right.
but like for like swap - would be the same as winter and summer driving in my opinion - the whole point of it is to know how much power is being used and therefore how much to charge if my understanding is right.
Click to expand...

There is a battery monitor reset routine on SDD, so it is a thing. I'm assuming it's much like the adaptive engine control system used.
Presumably the battery monitor simply resets the parameters to a baseline for a new battery, after which the adaptive battery monitor, monitors battery capacity, and so is able to alter charge current, for control the stop start system.

Fitting a replacement battery, without running the battery replacement routine, will simply mean the battery charging isn't optimal, until the adaptive valves are re-learned.
 
I'm sure there is a reason for this adaptive charging stuff, but when an average owner can't change a battery without diagnostic kit and knowledge, technology has gone too far. We won't be able to pump up our tyres next.

Col
 
smart alternators adapt their charging profile and keep historical data on the state of charge. if you replace the battery, it charge according to the profile unless you reset it
 
A FL2 can spot the battery has been changed because the new one's profile is betterer than the old one. It just takes a small number of drive cycles to do it. You can get it reset if yer want it done quicker. I never bothered with mine as it can do it itself. FL2's are clever. ;)
 
Hippo said:
A FL2 can spot the battery has been changed because the new one's profile is betterer than the old one. It just takes a small number of drive cycles to do it. You can get it reset if yer want it done quicker. I never bothered with mine as it can do it itself. FL2's are clever. ;)
Click to expand...
All technology is clever, right up until the time it ****s itself

Col
 
Colthebrummie said:
All technology is clever, right up until the time it ****s itself

Col
Click to expand...
True. But we have the manual, diagnostic devices and super hero's working for the AA to help us carry our Freelander's home if they can't make it by themselves.

I'm lucky as electrics/electronics is part of my world so it doesn't put me oft owning a vehicle which relies on it. I can appreciate that's not the case for everyone. There's the help from this ere forum and many garages to fix their Freelander's if needed.

In the early 90's peeps were scared of abs and traction control. We take it as standard now and cope with it quite well. With electronics it's just a case of breaking down the problem. Input(s) - process - output(s).
 
Hippo said:
True. But we have the manual, diagnostic devices and super hero's working for the AA to help us carry our Freelander's home if they can't make it by themselves.

I'm lucky as electrics/electronics is part of my world so it doesn't put me oft owning a vehicle which relies on it. I can appreciate that's not the case for everyone. There's the help from this ere forum and many garages to fix their Freelander's if needed.

In the early 90's peeps were scared of abs and traction control. We take it as standard now and cope with it quite well. With electronics it's just a case of breaking down the problem. Input(s) - process - output(s).
Click to expand...
Tell that to @goldrover, her rangie has been off the road with dodgy electronics for ages, no one seems to know how to fix it.

Col
 
Colthebrummie said:
Tell that to @goldrover, her rangie has been off the road with dodgy electronics for ages, no one seems to know how to fix it.

Col
Click to expand...

She has thrown money at it, and yet hasn’t taken her own advice like take it back and kick off:eek::D

Hippo said:
It's a shame I'm on her ignore list. :D
Got an iid that should work on it anorl.
Click to expand...

She won’t listen to many on here for that reason;).

J
 
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