Another E46 nackered key post - sorry! - Page 2

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    #11
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    I am sorry but that picture looks like rubbish to me and will not allow the new key to work (another lie just like blank keys of ebay) if you have a look at your key when you open it you will see a rfid chip at the base of the circuit. Basically the ews asks the rfid chip if it is the right key that's why the key will still work with a dead battery. This would not be the case looking at the picture that "TheEnd" posted as that component is powered by the battery, This is what i was led to believe when i went to go and see a guy that plays with electronics for a living and the key charges by inductive charging basically there is a black ring around the barrel that makes an electromagnetic field which charges the key.
     
     

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    #12
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    Quote Originally Posted by ally18 View Post
    you see that copper wirer thing thats is what chargers the key, car send small charge to key , copper thing picks it up and chargers battery. if your none remote key starts the car then yes, but it will be something like a id44 chip. i can unsolder the chip and replace it onto a used pcb for you , also do you a whole new key programmed to your ews. TheEnd this is why im learning about the ews m8 in another post. im able to make new keys programmed to the ews so no need to pay bmw prices
    Sounds good. How much would you charge?
    Victory is mine!!!
     
     

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    #13
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    the chip should work even if battery isn't charged as an id44 will work and that doesnt hold any charge
     
     

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    #14
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    right so say the id44 chip does not need charge why would this then be soldered? and what is the rfid chip on the rear of the picture shown used for?
     
     

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    #15
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    The ID44 chips are used in second hand modules only.

    A genuine diamond key runs the EWS as part of the PCB, and the data is held in the ELMOS 10030A which is that little 8 pin chip. When someone reuses a key, the 10030a is usually removed, and a bridge over two of the legs to complete charging circuit for the remote, and then a new ID44 / PCF chip is used.

    A new fully blank key has an unprogrammed 10030a chip but they are harder to find. Plenty of resellers list some but without prices, and the ID44 separate transponder chips are easier to just stick in instead.
     
     

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    #16
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    yes everything TheEnd has said is true to all that i have found. took me two weeks to find a seller that can really get the 10030a chips and there are not cheap.
     
     

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    #17
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    Quote Originally Posted by bme46 View Post
    right so say the id44 chip does not need charge why would this then be soldered? and what is the rfid chip on the rear of the picture shown used for?
    an id44 chip isn't soldered on to board, like TheEnd said 10030a would need to be removed and pin 3 and 8 needs to be bridged to compleat the charge circuit.
     
     

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    #18
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    yes i have just found that information out,

    http://www.ianparsons.info/bmwkeypage.htm

    but i don't understand what the guy i went to see was taking about. whats the rfid like chip used for?
     
     

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    #19
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    i have no idea m8, but can tell you i personally have removed old 10030a chip and reprogrammed new 10030a onto a key and also programmed a id44 chip to work with the ews. done loads of testing.
     
     

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    #20
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    cheers for that info just out of curiosity how would you program a new (unwritten) chip then?
     
     

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