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Thread: L322 Dead Battery?

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    L322 Dead Battery?

    After returning from a 10 Cruise... all i wanted was to take the Range Rover for a drive... HOWEVER

    Whilst i was away my father ran the car after 5 days for a 20km drive to maintain the battery then after another 3 days the vehicle would not start. It then sat dormant for 4 days therefore equaling a full week where it was not started.

    After returning i have began my investigation into what the problem could be it shows the battery as low as 11.63 on the multimeter however when hooked up to a doner vehicle (using the correct procedure) it charged up for 20minutes then showing 13.30 with the doner vehicle still charging the Range Rover... this still failed to start the Range Rover.

    After charging and with all leads removed (using the correct procedure) the battery shows 12.03 and still fails to start.

    TWO warnings have displayed themselves on the fault screen:

    1. Key Fob battery Low (this appeared once) however the key still unlocks the car and the spare key (key to create a copy) also doesn't start the car.

    2. Pre-Heating has displayed itself several times.

    When the key is turned to start the motor there is a click as the starter motor solenoid gets power however the starter motor doesn't crank over.

    If you have read all of this i appreciate your time! i have tried to include as much information as i can think of... and i hope someone is able to lead me in the right direction

    Kind Regards, James.

  2. #2
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    Homestar is offline Super Moderator & CA manager Subscriber
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    Hi James, have you measured the voltage when you try to crank it? Just wondering if the volts are dropping right off under the load. How old is the battery in it? It may have been on its last legs, and leavng it for a few days tipped it over the edge.
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.

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    The multimeter shows as low at 10.00 when the key is turned to attempt the starting process...

    Also within the last hour since the car was charged and showing 12.03 (which may have been a misleading representation due to the battery only JUST being charged) it now shows 11.39...

    After a quick look and some assumptions the battery appears to be the original... So this could very easily be the cause of these issues... Is it possible to replace the battery yourself? or will the "Explosives" cause to much of a safety risk?

    It also seems strange that even with power from a doner vehicle and reading 13.30 that the car will not crank over?

    James.

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    James
    Just a thought ! have you tried to start it in neutral ? it may also be the inhibitor switches are playing up. Though the low battery volts reading are more likely to be the cause.

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    Sounds like it is shagged. Easy to replace yourself. You will need to put the bonnet up to its top access position to get to it. Simply disconnect it - negative first, then the positive, and put the new one in reverse order - pos first, then neg. Turn the ignition on, then you will need to turn the steering wheel from lock to lock and you should be sorted.

    Not really suprising you can't jump start it, unless you have a very large donor battery and a really good set of jumper leads - not the crap you get from most places - you simply won't get the grunt across. You may see plenty of volts, but remember you need enough current not only to crank the engine, but the dead battery will also be dragging current and competing against the starter. It is not as easy as you think to jump a car with a stuffed battery.

    Cheers - Gav
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.

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    Quote Originally Posted by Laurie View Post
    James
    Just a thought ! have you tried to start it in neutral ? it may also be the inhibitor switches are playing up. Though the low battery volts reading are more likely to be the cause.
    I have tried to start it in Neutral as well and this was unsuccessful also... I will replace the battery in the car and the Fob and hope for the best!

    James.

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    Quote Originally Posted by bacicat2000 View Post
    Sounds like it is shagged. Easy to replace yourself. You will need to put the bonnet up to its top access position to get to it. Simply disconnect it - negative first, then the positive, and put the new one in reverse order - pos first, then neg. Turn the ignition on, then you will need to turn the steering wheel from lock to lock and you should be sorted.

    Cheers - Gav

    Thanks for your advice Gav!

    Now i just have to get the time to get to a battery place during the week... as they are all closed due to it being Sunday and i am working days this week which will make it difficult

    Cheers, James.

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    As we all should know RR are very battiery hungery so a battery that is even a little down will cause all sorts of problems. If in dought replace it. As Gavin has said.

    Gary

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    I left my key in and the radio on last Sunday, whilst fitting up one of those genuine rubber nudge bars to my td6, went to start it in the arvo and the key wouldn't turn, then noticed the interior lights were dim, volts had dropped to 10.6v. I jump started it, ran it for a half hour and it's started good as gold all week,I took it in to get the battery load tested and it was still fine but now I pull the key out of the ignition as it seems to draw quite a lot of current out just on the acc mode? But get your bat tested and bin it if in doubt.

  10. #10
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    Ummm,

    did nobody notice one of those errors was a KEY FOB BATTERY error?

    While it may be a spurious error due to low voltage issues it might also be a valid fault.

    Yes, I'll admit to agreeing with consensus here that the probable culprit is a dead or dying battery but you'll never get the car to start if that little RFID chip in the key fob isn't powered and synching well with the cars security ECU.

    Try replacing the battery in the key fob and see if you have more success.

    I am also with Gav and Gary on this point and suggest you get a new main battery promptly. The battery should not drain so significantly over half an hour if it's in good shape. A fast discharge profile is usually a very good indicator of a dying battery.

    Just my 5c worth.

    Cheers,
    Iain

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