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Leon
Member Since: 26 Apr 2014
Location: Leamington Spa
Posts: 427
  
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Hi all, just about to have a new battery fitted.
Keep seeing people saying that the system has to be reset to see the new battery.
So the question is , what does this procedure actually do to the car and what will happen if it's not done?
Obviously I'm going to get it done but just interested.
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 8th Dec 2019 11:48 am |
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deanslandy
Member Since: 17 Jan 2015
Location: nuneaton
Posts: 646
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I had mine changed at the road side by an RAC man a couple of years ago and no problems whatsoever Belts, oil pump casing and water pump by Flack
Transmission flush by Geoff
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| 8th Dec 2019 11:55 am |
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Asa
Member Since: 03 Jul 2016
Location: Essex
Posts: 172
 
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You do not need to do anything other than perhaps pre charge the battery if you have a charger? It helps the battery from new if a little dissapated, but not essential with a brand new battery.
You may have heard of a hard reset that puts everything back to factory specs?
Again not necessary for fitting a new battery.
I speak with recent experience of fitting a new alternator and new battery!
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| 8th Dec 2019 11:58 am |
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M3bobby
Member Since: 21 May 2018
Location: Sleaford, LINCS.
Posts: 857
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If you have battery monitoring then resetting it allows the car to relearn the state of the system. For example, if your parked, engine off and listening to music, the BMS monitors the charge. If it thinks the battery is low, it can turn off the entertainment system earlier to save the battery. If you fit a new battery, it won’t know it’s been changed and continues to turn the audio off early.
It’s just another reset, nothing more. Unless you change the capacity of the battery in which case you need to tell the intelligent charging system it has a different capacity to original. I’ve fitted the larger capacity Diesel battery to my petrol and reset both BMS and changed the capacity in CCF. 012MY RRS 5.0 Supercharged Autobiography (Current)
Mods:
TPMS (Complete but got an issue)
Genuine LR DRLs (Complete)
Remote Boot close from key fob (Complete)
2016 Discovery 4 Mirrors AKA RRS2 (Complete)
2014 L405 Surround Camera retro fit (Now 2016 L319)
2013 RRS Dual View Screen fit (Complete)
2016 LR4 RSE (Complete)
2014 LR4 Homelink (Complete)
2016 FFRR Electrochromatic Wing Mirror Glass (Complete)
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| 8th Dec 2019 2:43 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10362
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It’s the D4 that require this
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| 8th Dec 2019 4:25 pm |
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Russell
Member Since: 24 Aug 2007
Location: Kent
Posts: 10564
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As Pete said, D3's no D4's yes MY17 D5 1st Edition Namib Orange
MY15 D4 HSE Kaikoura Stone
MY12 D4 HSE Nara Bronze Sold and gone
MY11 D4 HSE Stornaway Grey Sold and gone
D3 S spec Silver Sold and gone
Tow bar, full length roof bars, side steps, tow bar storage unit, surround camers.
D4 camera club
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| 8th Dec 2019 5:44 pm |
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Leon
Member Since: 26 Apr 2014
Location: Leamington Spa
Posts: 427
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Thanks very much for the info everybody  
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| 8th Dec 2019 7:26 pm |
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