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  1. #1
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    Replacement key fob

    Hi, I need to source a replacement remote fob for my B6 Cab (2003), not a problem to swap the blade and the imob rfid chip but of the several on ebay at the moment I know some wont work on A4s.

    Looked hard after taking it apart as if to change the battery but I cant see a audi part number..... any clues ?
    2003 A4 Cab 2.4 V6 Manual / 43k miles genuine woohoo (on a 10 year old car lol) / Ebony Black Metallic / Full Grey Leather / Fully Electric Seats / Heated Seats / Interior Light Pack / Cruise / Wood / Bose Symphony II / Black roof

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  3. #2
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    I found the part code ,its on the outer facing bit of the battery holder that you can only see once its seperated from the key blade section....

    So the question is, my fob part number is 8Z0 837 231.... a lot of the ones on EBay have an extra A or D, does anyone know if it matters ???

    Advice appreciated.
    2003 A4 Cab 2.4 V6 Manual / 43k miles genuine woohoo (on a 10 year old car lol) / Ebony Black Metallic / Full Grey Leather / Fully Electric Seats / Heated Seats / Interior Light Pack / Cruise / Wood / Bose Symphony II / Black roof

  4. #3
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    Based on your car options the key frequencies are as follows,
    (look inside your Service Book where all car options are listed via 3 digit codes):

    5D1 = Carrier frequency 433.92 MHz-434.42 Mhz
    5D2 = Carrier frequency 315 MHz
    5D3 = Carrier frequency 315 MHz with reduced transmitting power
    5D4 = Carrier frequency 315 MHz without panic button

    Keys available are as follows:

    8Z0 837 231 01C for "5D1" option cars (12/00 - 06/02) - 3 Buttons
    8Z0 837 231 D 01C for "5D1" option cars (07/02 - 12/04) - 3 Buttons
    8Z0 837 231 A 01C for "5D3" option cars (12/00 - 06/02) - 3 Buttons
    8Z0 837 231 E 01C for "5D3" option cars (07/02 - 12/04) - 3 Buttons
    8Z0 837 231 B 01C for "5D2" option cars (12/00 - 06/02) - 4 Buttons
    8Z0 837 231 F 01C for "5D2" option cars (07/02 - 12/04) - 4 Buttons
    8Z0 837 231 C 01C for "5D4" option cars (12/00 - 06/02) - 3 Buttons
    8Z0 837 231 G 01C for "5D4" option cars (07/02 - 12/04) - 3 Buttons

    In the UK I guess we only use "5D1" frequencies and you need the key frequency to match the Convenience Module frequency else no remote central locking.
    2001 A4 Saloon 3.0 Quattro Sport Tiptronic - Platinum Leather/Heated Front Seats/BOSE/DIS/Cruise Control
    Retrofits:GmBH Bumpers, F&R Ambient LEDS, OEM Valeo Xenons (D2S) & Headlight Washers, Auto-dipping RVM, Footwell Lights, Vent Control illumination, ISO-Fix, RNS-E & OEM Bluetooth + VIMhack + Video i-pod & Aux inputs, Rear PDC, Powerflow 100mm Tips, Reversing Camera
    2012 A4 Saloon 2.0 TDIe Technik (163ps)
    Diagnostics:VCDS HEX+USB+CAN Cable

  5. #4
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    Hi, thankd for the reply... mine is a 5D1, but I have read on other forums that the early A4s ie 2002-3 build have a different convience module hence the key codes with the D as an extra digit.....I have 2 fobsm the code strip and the black plastic key, its just one of the bobs doesnt work wireless, its damaged (can see it) but at least it unlocks and starts the car....
    2003 A4 Cab 2.4 V6 Manual / 43k miles genuine woohoo (on a 10 year old car lol) / Ebony Black Metallic / Full Grey Leather / Fully Electric Seats / Heated Seats / Interior Light Pack / Cruise / Wood / Bose Symphony II / Black roof

  6. #5
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    8Z0 837 231 01C for "5D1" option cars (12/00 - 06/02) - 3 Buttons
    8Z0 837 231 D 01C for "5D1" option cars (07/02 - 12/04) - 3 Buttons

    Has to be one of these 2..... dilema is do I try a 'D' key and hope it works....my car was registered Jan 2003 but I dont know the build date to its either or ....
    2003 A4 Cab 2.4 V6 Manual / 43k miles genuine woohoo (on a 10 year old car lol) / Ebony Black Metallic / Full Grey Leather / Fully Electric Seats / Heated Seats / Interior Light Pack / Cruise / Wood / Bose Symphony II / Black roof

  7. #6
    Woorlord's Avatar
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    Info on convenience modules as follows.......



    So assume your Convenience Module is (AK/AH)AJ or (BC)BD?

    Would have thought the frequency is important and you will be transferring the RFI tag so perhaps any 5D1 version fob will work?
    Last edited by Woorlord; 6th February 2011 at 19:29.
    2001 A4 Saloon 3.0 Quattro Sport Tiptronic - Platinum Leather/Heated Front Seats/BOSE/DIS/Cruise Control
    Retrofits:GmBH Bumpers, F&R Ambient LEDS, OEM Valeo Xenons (D2S) & Headlight Washers, Auto-dipping RVM, Footwell Lights, Vent Control illumination, ISO-Fix, RNS-E & OEM Bluetooth + VIMhack + Video i-pod & Aux inputs, Rear PDC, Powerflow 100mm Tips, Reversing Camera
    2012 A4 Saloon 2.0 TDIe Technik (163ps)
    Diagnostics:VCDS HEX+USB+CAN Cable

  8. #7
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    Will be moving the RFID chip yes, already stripped the key down Just not 100% sure a 'D' key will work, even on the correct frequency. Can always resell it on eBay I guess
    2003 A4 Cab 2.4 V6 Manual / 43k miles genuine woohoo (on a 10 year old car lol) / Ebony Black Metallic / Full Grey Leather / Fully Electric Seats / Heated Seats / Interior Light Pack / Cruise / Wood / Bose Symphony II / Black roof

  9. #8
    Woorlord's Avatar
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    Quote Originally Posted by Cabbyfan View Post
    Will be moving the RFID chip yes, already stripped the key down Just not 100% sure a 'D' key will work, even on the correct frequency. Can always resell it on eBay I guess
    And then the rest of us will know if it's compatible........... or not!
    2001 A4 Saloon 3.0 Quattro Sport Tiptronic - Platinum Leather/Heated Front Seats/BOSE/DIS/Cruise Control
    Retrofits:GmBH Bumpers, F&R Ambient LEDS, OEM Valeo Xenons (D2S) & Headlight Washers, Auto-dipping RVM, Footwell Lights, Vent Control illumination, ISO-Fix, RNS-E & OEM Bluetooth + VIMhack + Video i-pod & Aux inputs, Rear PDC, Powerflow 100mm Tips, Reversing Camera
    2012 A4 Saloon 2.0 TDIe Technik (163ps)
    Diagnostics:VCDS HEX+USB+CAN Cable

  10. #9
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    Quote Originally Posted by Woorlord View Post
    And then the rest of us will know if it's compatible........... or not!
    I like your thinking ! Just took my fully working fob apart, same part code 8Z0 837 231/355029 (No A or D just the 355029 number).... Im just gonna try it with a D key, hell I will take one for the team
    2003 A4 Cab 2.4 V6 Manual / 43k miles genuine woohoo (on a 10 year old car lol) / Ebony Black Metallic / Full Grey Leather / Fully Electric Seats / Heated Seats / Interior Light Pack / Cruise / Wood / Bose Symphony II / Black roof

  11. #10
    Woorlord's Avatar
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    If your fob part no says "8Z0 837 231" and Audi would follow that with the "Satin Black" colour coding "01C" then you would buy this one off Ebay - they sate the number as yours is printed on the inside of the fob.
    However, the only other UK option on later vehicles as stated above would be the "8Z0 837 231 D" version and definitely not the "A" version. Same seller as above is selling the "D" version and he says its stamped on the inside of the key fob.
    Either versions from this guy are 19.95 delivered.

    Not sure which Ebay seller you were looking at for the D version?
    2001 A4 Saloon 3.0 Quattro Sport Tiptronic - Platinum Leather/Heated Front Seats/BOSE/DIS/Cruise Control
    Retrofits:GmBH Bumpers, F&R Ambient LEDS, OEM Valeo Xenons (D2S) & Headlight Washers, Auto-dipping RVM, Footwell Lights, Vent Control illumination, ISO-Fix, RNS-E & OEM Bluetooth + VIMhack + Video i-pod & Aux inputs, Rear PDC, Powerflow 100mm Tips, Reversing Camera
    2012 A4 Saloon 2.0 TDIe Technik (163ps)
    Diagnostics:VCDS HEX+USB+CAN Cable

  12. #11
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    I have already messaged the seller of the first link you posted asking him to confirm the full part code. There are half a dozen D code keys listed at the moment....
    2003 A4 Cab 2.4 V6 Manual / 43k miles genuine woohoo (on a 10 year old car lol) / Ebony Black Metallic / Full Grey Leather / Fully Electric Seats / Heated Seats / Interior Light Pack / Cruise / Wood / Bose Symphony II / Black roof

 

 

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