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Thread: XE Battery

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    XE Battery

    Hi All, great to find this website. I have had my petrol XE Portfolio for 16 months now and have to say it is my first Jaguar and I am absolutely delighted with it. I have one question please concerning the batteries. There are two batteries, one under the bonnet and one in the boot. Due to my lack of miles the auto stop/start has stopped working. I have used successfully a Victron Energy Blue Smart charger on the front battery which shows fully charged, stop/start still doesn't work though. Does this also charge the boot battery or do I need to charge that one as well to get the stop start back working? What does the boot battery work on my car please?
    Any ideas would be gratefully received.

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    Senior Member idrobbo's Avatar
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    Hello & welcome. If it's similar to the XF stop/start then it needs lots of factors to be right before it will kick in, so if you are only doing short journeys, low on fuel, lots of electrics drawing power then it may not work.
    3.0D 2012 (62) XF-S Premium Luxury IRR
    Previous: 3.0D 2009 (59) XF Luxury, 2002 (52) S Type 3.0 S

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    Quote Originally Posted by idrobbo View Post
    Hello & welcome. If it's similar to the XF stop/start then it needs lots of factors to be right before it will kick in, so if you are only doing short journeys, low on fuel, lots of electrics drawing power then it may not work.
    Thanks for that, my mileage is low. Do you know if the battery in the boot can be charged the same as the battery under the bonnet can be charged? Also if the front battery is fully charged does the boot battery gain power from this one?

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    Senior Member idrobbo's Avatar
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    Sorry, don't know the answer to that, mine doesn't have S/S. Hopefully someone else will come along with a better answer. May be worth also posting in the XE section.
    3.0D 2012 (62) XF-S Premium Luxury IRR
    Previous: 3.0D 2009 (59) XF Luxury, 2002 (52) S Type 3.0 S

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    Super Moderator Ian D's Avatar
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    Quote Originally Posted by Riverboy View Post
    Thanks for that, my mileage is low. Do you know if the battery in the boot can be charged the same as the battery under the bonnet can be charged? Also if the front battery is fully charged does the boot battery gain power from this one?
    Thread moved to XE section.

    The XE only has one battery, which is located in the boot. The only thing under the bonnet is the main fusebox for the engine and a rear fusebox under a cover by the windscreen. The fusebox with a red cover on the right hand side is the main positive lead to the battery in the boot. There are many conditions that are required for stop/start to work, which are all described in the owners manual. The stop/start may have had too many failed operations which throws up codes that aren’t visible to the owner and can be read by a dealer or anyone with the correct JLR diagnostic equipment.
    Current Car:
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    2004 X-Type 3.0L AWD SE Auto estate.
    2007 XK x150 4.2L Coupe

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    Hi Ian thank you for your response, my XE certainly has two batteries, one under the bonnet and a slightly different looking one in the boot well. I used my smart charger on the front one and it brought that up to full charge but am a bit worried about the one in the boot as the only earth point I can get at is the earth wire from the battery. I was told to use the point under the bonnet placed there especially for charging. If I could understand how this site uploads photos I would put a couple up here for you to see.

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    Hi Ian, sincere apologies! I have now had a lesson from someone who knows a lot more about batteries than I do. What I thought was the battery under the bonnet is in fact the fuse box and the charging point for the battery in the boot. Sadly despite the auto stop start being on it doesn't work even though the battery is fully charged so will give up on ever getting this to work I think.

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    Quote Originally Posted by Riverboy View Post
    Hi Ian, sincere apologies! I have now had a lesson from someone who knows a lot more about batteries than I do. What I thought was the battery under the bonnet is in fact the fuse box and the charging point for the battery in the boot. Sadly despite the auto stop start being on it doesn't work even though the battery is fully charged so will give up on ever getting this to work I think.
    There is a software update to sort the stop start that your dealer will need to do. I think it was introduced in February this year. Sorted mine out and lots of others. It's not to do with the battery.
    2017 XE R-Sport with ACC and lots more. Previously 2010 XFS 3.0D Portfolio with all toys (ACC/Voice/TV etc) except sunroof

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    Quote Originally Posted by mrb View Post
    There is a software update to sort the stop start that your dealer will need to do. I think it was introduced in February this year. Sorted mine out and lots of others. It's not to do with the battery.
    Thank you for that information, will speak to our local Jaguar dealer about this.

  10. #10
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    Because the battery on mine is a PITA to get to (space saver spare wheel over it) I decided to install a panel mounted charging socket (CTEK) with battery condition indicator led’s in the boot area.
    I also have a CTEK trickle charger / conditioner making it a breeze to keep the battery in top condition, I would highly recommend it.
    Easy to install, red cable to battery positive terminal and the black cable to a suitable earth point in the boot (not directly to the battery negative terminal), I fitted the panel mounted charging socket into the small plastic blanking plate on the right hand side of the boot.

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