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Thread: Key fob batteries last one day on all keys, code B1050 & B1052 showing

  1. #31
    Join Date
    Mar 2012
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    Burnley
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    1,338
    Quote Originally Posted by mikerj View Post
    I don't see how replacing the fob battery would re-sync the key if it's a problem at the other end though?
    I concur.

    Or in other words you can't solve this problem without the op being able to perform tests as outlined and answering questions the most preliminary of which is how flat the battery actually is when it is inserted and when it is removed.
    .

  2. #32
    Join Date
    Jul 2015
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    SW
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    46
    They die individually and more recently I have just been using one fob to keep track of which one is working.
    BUT - the central locking went into complete spasm last week, locking and unlocking v v v rapidly without stopping. Nothing I did would stop it until I turned the ignition on and then all went quiet but as soon as I turned it back to take the key out it went into manic mode locking and unlocking. So I left ignition on and called the AA thinking that thye have a good computer system to plug into. Sadly they were busy and sent a very nice chap who usually recovered lorries! And his plug in thing looked like he'd bought it from Aldi and showed no codes. He couldn't stop it either so disconnected battery. One thing he did notice was it was wet under the passenger carpet. He reconnected it and it was still doing it, so I parked it up.
    So a week or so later, I reconnect battery and all is OK, start the car and drive 20 miles to garage. Park it, switch it off - all OK, lock it, all OK so have left it with them. Is there a chance that the wet under the carpet was arcing something?? They are gonna have a look but don't hold out much help for diagnosis.
    Going back to my original question - does anyone have any idea what the does mean? 1050 and 1052
    Many thanks all for help.

  3. #33
    Join Date
    Jan 2011
    Location
    uk
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    816
    Quote Originally Posted by Eryc View Post
    They die individually
    But you haven't proved yet that the key battery has actually died !!!
    You're just replacing assuming it's dead !!

    Next time it fails , you need to 100% confirm the key battery is actually depleted , by testing terminal voltage on a multimeter (or ideally a battery tester)

    Without this critical test , you're not going forward with this problem !!
    You're so money supermarket and you don't even know it!

  4. #34
    Join Date
    Jul 2015
    Location
    SW
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    46
    Problem is a bit bigger than the KEY fob now though. Affecting the whole central locking system. I live in the middle of no where! getting out to get a device to check whether the battery is dead wasn't priority tbh. Esp when key fob/car goes through the symptoms of battery dying, (fast flashing indicators/hazards on locking) one of the earlier codes said key fob battery too weak AND when I put a fresh battery in, it all works again. But you are right, I haven't yet proven that, so will get onto that now.

  5. #35
    Join Date
    Jul 2015
    Location
    SW
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    46
    Have ordered a tester to find out once and for all. Thanks for suggestion.

  6. #36
    Join Date
    Jul 2015
    Location
    SW
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    46
    Thanks for this.

    Had another look at the Evilution Link you suggested.

    It states:

    Fourtwo 450 and Roadster Information ONLY

    If the indicators flash 9 times it means there is a fault with the key.
    It can be 1 of 2 faults, 1 is OK, the other isn't good.

    The OK Fault

    If you press unlock on the key and the indicators flash 9 times, the doors open and you can
    start the car then the battery in the keyfob is running low and should be replaced straight away.

    The Bad Fault

    If you press unlock on the key and the indicators flash 9 times but the doors don't unlock
    then you have problems. Even if you get in through the boot and open the doors, the
    immobiliser will not be disabled so the car won't start.

    The only way to fix this fault is to start the car with your spare key and take the car to a smart
    dealer or a smart specialist. They will either recode the car to the old key or code a new one.

    So - my lil smart is doing the OK fault, but CONSTANTLY! So dunno what to do.

  7. #37
    Join Date
    Jan 2015
    Location
    Devon
    Posts
    51
    I'm wondering if there's a possibility that one of your keys is constantly transmitting. That would certainly drain the battery very quickly, and I suppose could cause the 9 flashing light problem. If you remove the batteries from all of your key fobs do the flashing lights stop?

    If not it may well be worth checking out the key fob receiver, which is located just behind the "gear lever" (SE Drive) under the plastic cover. If this has gone bad and is constantly sending spurious data to the ZEE unit it could explain the constant 9 flashing lights issue, though not the key fob battery problem.

  8. #38
    Join Date
    Mar 2012
    Location
    Burnley
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    "Wet carpet" is the clue to the problem. Why is it wet? find the leak.

  9. #39
    Join Date
    Jul 2015
    Location
    SW
    Posts
    46
    Thanks that's very helpful.
    I haven't tried removing batteries when the central locking is in spasm. Interesting. And I didn't know about the key fob receiver, so thanks for that.

  10. #40
    Join Date
    Jul 2015
    Location
    SW
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    Yes we are looking at that, thank you!

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