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L322 Battery deceased

Discussion in 'Range Rover' started by ukadamwest, Dec 4, 2019.

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  1. ukadamwest

    ukadamwest Well-Known Member

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    sitting in traffic this evening, the battery died rather quickly.

    its been fine of recent times, starting on the button despite the cold and frosty mornings. after a long run, sitting in the traffic, messages started popping up on the dash, suspension fault, traction control, HDC, airbag, adaptive lights CEL. plugged in the GAP IID tool,, looked at live values, battery reading 7v. limped it to the nearest Halfrauds.. no correct battery (YUASA YSB019) in stock. not enough juice to turn it over, borrowed a jump pack off the Halfrauds guys.. not juicy enough to kick it over, get the jump leads out the boot and politely ask a couple of blokes for jump who happily obliged. tear round to the Halfruds that have 8 in stock, 10 miles away, purchase it, with fitting, turns out the fitter is too short to reach and lift the battery, so I do it for him.

    start it up, all good with the world, plug in the IID tool, clear all faults and all is even better with the world.

    kind of interesting how it died and its true the L322 flashes like a Christmas tree when the battery is on the fritz and its good to have a GAP IID tool in the glovebox
     
    derwendolly and kds like this.
  2. kermit_rr

    kermit_rr Well-Known Member

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    Do you need to tell the computer is got a new battery? Not sure when they started needing that
     
  3. biketeacherdave

    biketeacherdave Well-Known Member

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    Well done adam. No you dont need to tell the car it's got a new battery
     
    Last edited: Dec 4, 2019
  4. brianp38dse

    brianp38dse Well-Known Member

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    Is your alternator working ok? it should have kept it running above 7v.
     
    Henry_b likes this.
  5. Henry_b

    Henry_b Well-Known Member

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    Ditto..
     
  6. Shippers

    Shippers Well-Known Member

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    I'd be keeping a spare battery in the boot as well!...
     
    ukadamwest likes this.
  7. Datatek

    Datatek Well-Known Member

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    If the engine was running, then the alternator should have kept it running. I'd be looking at the alternator output.
     
  8. JUKE179r

    JUKE179r Well-Known Member

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    Exactly. The battery is mainly used just for initial engine start.
     
  9. kermit_rr

    kermit_rr Well-Known Member

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    And also to act as a buffer, to maintain a level voltage for all the systems
     
  10. Datatek

    Datatek Well-Known Member

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    Buffer, actually it acts as a low impedance load that absorbs the spikes from the alternator and as you say maintains a smooth level voltage.
     
  11. ukadamwest

    ukadamwest Well-Known Member

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    14.0 to 14.2 on the voltage with the new battery. With a high electrical load on
     
  12. Datatek

    Datatek Well-Known Member

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    That is low, should be at least 14.7 volts. Might be worth checking the earth from engine to chassis. Also, if you can get at it, put you meter across the output of the alternator at the alternator. It's not unknown for the positive cable to corrode away inside the sleeve causing excessive volt drop.
     
  13. ukadamwest

    ukadamwest Well-Known Member

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    thanks i'll check that when I get a moment.. need to sort the P38 and the Cayenne out first !
     
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