Another E46 nackered key post - sorry! - Page 3

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    #21
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    The BMW EWS is happy to read the info from either the circuit board on rechargeable keys, or the PCF7935 which is the RFID chip, and is totally self contained.
    The wallet key for example has one of the PCF chips inside.

    ID44 is part of the identification in the chip, the BMW ones will come pre-prepared with 44 as part of the ID string. Different cars use different IDs, and some car chip writers can take totally blank chips and set the ID code, but the majority need that bit pre-programmed.
    They can be programmed by a few different bits of kit, the most common is EWS editor lite, another one is what I've got, and that's called the AK90, and they are pretty basic, and are limited to the pre "smart key" keys.
    Next step up to do the smart keys tends to move you into a £300-400 range, and the blank keys are pretty expensive meaning you might as well go to BMW for a new one.
     
     

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    #22
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    Sorry for the hijak - But am I right in understanding that all bmw keys are rechargeable and charge when in the ignition?! I have an e63
     
     

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    #23
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    Most from the diamond key / E46 onwards have rechargeable batteries inside, and somewhere in the handbook it'll say to swap keys every few months to keep the charge topped up.
     
     

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    #24
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    But when I change keys my idrive/seat/steering settings change?
     
     

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    #25
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    It's a hard life, but you'll have to have find a way around it.
    Stiff upper lip, and the seat controls.
     
     

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    #26
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    And if a key were to run out of battery?
     
     

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    #27
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    It'll still work for starting the car, but the remote bit won't do any locking or unlocking until it is used in the ignition for a while to recharge.
     
     

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    #28
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    Hi,
    Please can you show a picture of the two connections that need to be joined once the elmos 8 legged chip has been removed. You say 3 & 8 but depends which way round the board is & which direction etc they were numbered, clockwise/anti-clockwise if you know what I mean.
    With 3 & 8 bridged does charging of the battery still work.
    I am putting 44 chip in my case & removing 8 legged chip but I need battery to be able to be re-charged.
    Many thanks & await reply.
     
     

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    #29
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    Hi
    I see no image ?
     
     

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    #30
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    old on going thread
    but my key replaced 4 years ago is having intermittant faults and I went to the stealer to get another
    cost £130 inc a 5% discount.....
     
     

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