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Thread: Replacing battery

  1. #1
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    Replacing battery

    Hi all

    I am new to this scene. My missus has a 2014 Range Rover Sport Twin Turbo Diesel.

    The dash is showing low battery.

    The owners hand book is stating that the battery is to be replaced by an authorised Landrover Technician.

    So where is the battery hiding in this vehicle? Clearly not under the bonnet. Is there only one battery or two? Where can I source a replacement?

    Thanks heaps
    Andrew
    1998 Landrover Defender 300Tdi 130 HCPU Expedition
    1972 Peugeot 504 Sedan - Daily Driver

  2. #2
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    Battery is under the suspension compressor beneath the rear loadspace floor. Burson Auto Spares carry a replacement, and it’s near $600. You can get cheaper, but they are lower capacity. The battery monitoring system should be reset/recalibrated after replacement. Most independents can do this for a small price.
    If you don’t do this the start/stop system may not work.

  3. #3
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    Thanks Nessie.

    Good to know Burson's have the battery. It's actually fitting it myself is what I am trying to achieve. There seems to be no info on the internet.


    I'm wondering if I hook up a temporary battery in parallel, then remove the starting battery, install new battery then remove temporary battery, this will keep the battery management circuit open.
    Andrew
    1998 Landrover Defender 300Tdi 130 HCPU Expedition
    1972 Peugeot 504 Sedan - Daily Driver

  4. #4
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    Quote Originally Posted by 86mud View Post
    Thanks Nessie.

    Good to know Burson's have the battery. It's actually fitting it myself is what I am trying to achieve. There seems to be no info on the internet.


    I'm wondering if I hook up a temporary battery in parallel, then remove the starting battery, install new battery then remove temporary battery, this will keep the battery management circuit open.
    I believe the BMS needs to "see" the new battery right from first install to be able to function correctly. The vehicle start/stop will not operate properly (if at all) if you don't reset the BMS. It may also affect some other non-vital functions like In Car Entertainment etc. Check with a local indy or even a dealer to get it reset. By the way, do NOT rely on the NRMA or similar to supply your new battery. The one they recommend and have access to will NOT support Start/Stop.
    Don't ask me how I know all this! Haha!

  5. #5
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    The BMS slowly reduces the charge going into the battery as the battery ages based on a formula that is meant to stop the battery from being boiled because generally old batteries can't take as much charge as new batteries. Fitting a new battery without telling the monitor that the battery is new will cause the new battery to not be charged to the extent that it would be if the BMS was told it was a new battery which can lead to the battery prematurely becoming run-down. If you had your own tool you could try resetting the BMS to see if it overcame the low battery condition before resorting to fitting a new battery.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  6. #6
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    Hi Graeme, would a "Hard Reset" fix the problem in the newer Land Rovers like is does in older ones?

  7. #7
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    If its Low Battery - I'd suggest starting with a charger! If the vehicle does the domestic triangle day in and day out it likely just needs a damn good charge!

    Other than that - do NOT get a lower capacity battery - it needs everything it can have. And you DO need to reset the BMS using a tool (LR or IID)

  8. #8
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    I did not realise there is a low battery warning in the dash - is that as a message or as a warning lamp?
    Any chance you could share photo?
    If it is the red battery warning lamp then that indicates a fault with the battery charging system, which could of course still indicate a low battery but could include things like bad alternator.
    Also, does yours have the aux battery inside the RHS rear panel or just the main battery under the compressor?
    (If you put your VIN into TOPIX you can see if it mentions Auxiliary Battery in the minor features section.)
    Gone - RRS SE SDV6 with Dynamic MY15.5 Yulong White, with LLAMS

  9. #9
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    Quote Originally Posted by drivesafe View Post
    Hi Graeme, would a "Hard Reset" fix the problem in the newer Land Rovers like is does in older ones?
    I have never believed that the hard reset procedure achieves anything. I have monitored a removed battery lead for any residual power and have only detected voltage for 1-2 seconds at most before the voltage drops to zero, indicating that the ecus drain their power storage capacitors very quickly. Hence disconnecting the battery for 5 seconds is more than enough time to cause ecus to do a cold start when power is again connected.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  10. #10
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    My L494 does not have start stop but when I replaced the battery last month I couldn't find a BMS reset within the IID Tool menus. It may be available for other L494s though.
    The low battery warning is a message not a warning light and is displayed on the touchscreen and instrument panel (from memory).
    Fuji white RRS L494 AB

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