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  1. #1
    Veteran Member Three Rings derleicaman's Avatar
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    B7 Key Fob for B6 DIY

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    audibmi started this thread a few months ago regarding swapping/reprogramming the B7 Key Fob to work in the B6. I followed this thread with great interest as I had been interested in updating my original ratty looking B6 key fob with something a little newer. Thanks to the efforts of AZ'ers Hamotee, lanman1, aLeXliu911 and sandspeed success has been achieved in this endevour. And they said it couldn't be done! What I've done is put together a neat little DIY with some decent pictures for those of you who may want to try this yourself.

    The usual disclaimers apply. Proceed at your own risk. I make no guarantee that this will work for you, but I've done this twice already and have two new functioning B7 Key Fobs for my car.

    Tools Needed:
    Torx Driver #6
    Torx Driver #8
    Philips #0
    1/16” Pin Punch
    Small Pick Tool
    Small Hammer
    Vag-com tool

    You will have to obtain a B7 Key Fob. If you can get one with an uncut blade, you're way ahead of the game. A good source for key fobs is eBay. Do a search for “Audi Key Fobs”. You can find them for as little as $25. The more expensive ones advertise uncut blades and virgin immobilizers. You can always buy one at the dealer, but their pricing is around $300.

    The first picture shows the difference between the B6 and B7 Key Fobs.



    First step: Dismantle your old key. Take a small flat head screwdriver and pry apart the two parts of the B6 key fob.



    Once you have the key apart, take a pen knife and lift off the Audi ring logo from the key. This will reveal a small philips head screw. Remove the screw and seperate the two halves of the key head. Inside, you will see a recess with the transponder chip in it. Take the pick tool and carefully pry out the transponder chip.





    Be careful not to damage it! The transponder does not appear to be glued in, just a pressure fit. If you are going to re-use the B6 key blade, you need to remove the blade with the 1/16” punch. Look at the flip base of the key and you will notice a small hole with a roll pin holding the key blade. Carefully tap out the pin. The B6 and B7 key blades are very similar and will bear the same HAA engraving.



    The difference is that the B7 blade has a smaller shank (the part which is inserted into the flip key base and held in with the roll pin). You can use a dremel tool to grind down the B6 key shank. You need to compare the two shanks and test fit while you're doing this. I did this with the first key and made it work, but it was a bit wobbly in the flip key base. The good news is this saves you from having to get a B7 key blade cut – more on this later.

    Next step is to take apart the B7 Key Fob. Use a coin to pry off the battery cover.





    Then use the Torx screwdrivers to remove the three screws from the key fob. The big one is a Torx #8 and the two small ones are a Torx #6. Once these screws are removed, seperate the two key fob halves.



    On one side, you will notice the IC board for the remote. Carefully pry out the circuit board. Make sure you are grounded so you don't zap the board with a static discharge. Probably not a good idea to have carpeting in your work area!



    Once the IC board is removed, you will notice a light gray cover in the upper corner of the key fob. Carefully pry up this cover with the pick tool.




    This is where the transponder chip is hiding. You will notice the nice little clips on the back of the cover to hold the transponder chip. Remove the B7 transponder chip and replace with the one from your old key. The other option here is to buy a B7 Key Fob with a virgin transponder chip and have the dealer re-program it. I opted not to go this route as I try and stay away from the dealer at all costs! Re-assemble the key fob in the reverse order of taking it apart. If you bought a key fob with a blank key blade, you will need to get it cut to work on your car. This is in itself a great adventure! I live in the Chicago metro area and I could only find one locksmith about 45 min. away who would cut a “sidewinder” key. None of the dealers I called could cut the key. I am still researching getting cut key blades from Audi. The only drawback there is they go by the VIN number, so there is a high probability they will cut the larger B6 style key blade instead of the B7 type that you need.

    Once all this is done, you need to vag-com the key following the Ross-Tech wiki

    Channel 021: Remote Control Matching

    [Select]
    [46 - Comfort System]
    [Adaptation - 10]
    Channel 021.
    [Read]

    * Choose the memory position you want the new key be matched on by entering it's number (e.g. "3" for memory positon 3).

    [Test]

    * Now press any button on the remote you want to match.
    * The meas. block field above will change from Not Recogn. to Recognized.

    [Save]

    [Done, Go Back]
    [Close Controller, Go Back - 06]

    Note: You can check the current memory positions using Meas. Block 007.

    After this is complete, you should have a nice new-style key fob remote for your B6!

  2. #2
    Veteran Member Three Rings
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    Re: B7 Key Fob for B6 DIY

    thanks for this!
    USP CLUB MEMBER #75

  3. #3
    Veteran Member Four Rings michgo's Avatar
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    Re: B7 Key Fob for B6 DIY

    This is awesome! Definately going to have to try this.
    I heart wagons.


    'It's actually a pretty big pet peeve of mine when people mess around with my photos', MmmBoost

    shave it mold it sand it paint it

  4. #4
    Veteran Member Four Rings Dolphin18T's Avatar
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    Re: B7 Key Fob for B6 DIY

    Nice work, but does the chip from the B6 fob have to be trimmed or anything to fit inside the B7 fob? There aren't any pics of the final fitment.
    -Ryan
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  5. #5
    Veteran Member Three Rings derleicaman's Avatar
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    Re: B7 Key Fob for B6 DIY

    Direct swap for the two chips. They are identical size and shape.

  6. #6
    Veteran Member Three Rings Dos::Avants's Avatar
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    Re: B7 Key Fob for B6 DIY

    derleicaman:

    The difference is that the B7 blade has a smaller shank (the part which is inserted into the flip key base and held in with the roll pin). You can use a dremel tool to grind down the B6 key shank. You need to compare the two shanks and test fit while you're doing this. I did this with the first key and made it work, but it was a bit wobbly in the flip key base. The good news is this saves you from having to get a B7 key blade cut – more on this later.

    Do you have pics of this procedure? I don't have a clear idea of what's happening here.

    Thanks!
    Avanta-Humpa-Lot

  7. #7
    Veteran Member Three Rings derleicaman's Avatar
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    Re: B7 Key Fob for B6 DIY

    No, I didn't take pics of this procedure. It is a real pain in the a** though. Look at the pictue of the two key shanks. You need to grind down the B6 key shank to match the profile of the B7 shank. You also need to dremel a channel into the key for the roll pin to lock the blade. I used a small grinding/cutting wheel on the dremel to do this. Study the picture of the two key blades and I think you'll understand what needs to be done.

  8. #8
    Veteran Member Four Rings yoogene83's Avatar
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    Re: B7 Key Fob for B6 DIY

    what exactly is the difference between the b6 and b7 keyfob in terms of internals? What's to stop you from getting a b7 keyfob with a virgin shank and just getting it cut to match your VIN and then reprogramming the remote via Vag-com?

  9. #9
    Veteran Member Four Rings T0M3K's Avatar
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    Re: B7 Key Fob for B6 DIY

    I will ebay myself B7 FOB, I guess it doesn't matter if it's a virgin or not since I'm swapping the "chip"

  10. #10
    Veteran Member Three Rings derleicaman's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by yoogene83 View Post
    what exactly is the difference between the b6 and b7 keyfob in terms of internals? What's to stop you from getting a b7 keyfob with a virgin shank and just getting it cut to match your VIN and then reprogramming the remote via Vag-com?
    Hey yoogene,

    Not quite sure I understand the question. The B6 and B7 fobs are both 315 mHz. You can see in my pictures that the IC boards are quite different and are in no way interchangeable. As discovered in the original thread on this topic, you can't make the B6 internals work in the B7 fob. But why would you want to? The key is the immo chip. If you have the one from your old B6 fob, just transfer it over to the B7 fob.

    I did purchase two B7 keys with supposedly virgin immo chips and uncut key blades. I swapped the immo chip from my old B6 fob into the B7 fob. Didn't want to go to the dealer to have the virgin chip programmed and deal with their BS about how you can't do this. I then had the key blade cut at a locksmith. You still need to vag-com the fob.

    I have not been able to source the proper uncut key blades seperate. My Audi parts source says he cannot order the blades seperate. They only sell the complete unit. Knowing what a total fubar most of the parts guys are, ordering by VIN number you'd probably end up with another B6 key and fob and a bill for $300 for the wrong thing. There are lots of uncut key blades on ebay of the B6 type, but I have not seen any of the B7 type. If anybody has a source for uncut B7 key blades, let me know.

  11. #11
    Veteran Member Four Rings yoogene83's Avatar
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    Re: B7 Key Fob for B6 DIY

    my bad, my statement wasn't too clear.

    What i was asking was if you could purchase a b7 key fob, have it cut to your b6 car, and then just program it via vag-com. I can't see the pictures at work, so i couldn't tell the differences blindly. I was just thinking extremely simply, but i figured if it were easy, then shit, everybody would do it!

  12. #12
    Veteran Member Four Rings aLeXliu911's Avatar
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    Re: B7 Key Fob for B6 DIY

    buy a blank b7 key and cut it is the easiest way to do the blade. it only cost me 10 bucks.
    BetaAlphaTau member #11

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  13. #13
    Veteran Member Three Rings derleicaman's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by aLeXliu911 View Post
    buy a blank b7 key and cut it is the easiest way to do the blade. it only cost me 10 bucks.
    Where did you find B7 blanks for $10? Been looking without success.

  14. #14
    Veteran Member Three Rings derleicaman's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by yoogene83 View Post
    my bad, my statement wasn't too clear.

    What i was asking was if you could purchase a b7 key fob, have it cut to your b6 car, and then just program it via vag-com. I can't see the pictures at work, so i couldn't tell the differences blindly. I was just thinking extremely simply, but i figured if it were easy, then shit, everybody would do it!
    OK, now I understand. Take a look at the pics when you can.

    Essentially, this is what I did. Swap the immo chips, get the key cut and vag-com.

  15. #15
    Veteran Member Four Rings aLeXliu911's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by derleicaman View Post
    Where did you find B7 blanks for $10? Been looking without success.
    i bought my blank b7 key for 44 USD, and it cost me 10 bucks to cut the key.
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  16. #16
    Veteran Member Three Rings robsilvr85's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by derleicaman View Post
    Direct swap for the two chips. They are identical size and shape.
    hey I live in the NW suburbs of chicago. Probably not too far from you. How much would you charge for you to do this for me?
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  17. #17
    Veteran Member Three Rings Dos::Avants's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by aLeXliu911 View Post
    i bought my blank b7 key for 44 USD, and it cost me 10 bucks to cut the key.
    Was this at a dealer?
    Avanta-Humpa-Lot

  18. #18
    Veteran Member Three Rings derleicaman's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by robsilvr85 View Post
    hey I live in the NW suburbs of chicago. Probably not too far from you. How much would you charge for you to do this for me?
    Which part do you want me to do?

  19. #19
    Veteran Member Three Rings audi314's Avatar
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    Re: B7 Key Fob for B6 DIY

    I say that this thread really needs to be a sticky'ed at the top. This is really some great stuff. Now that I know its that easy I am going to do the swap myself. Both my parents have C6 A6's and I love the keys. They are just so much nicer than the B6 keys.
    I had a BT Audi!****> Lost at Barber MSP 11/1/09

    Hero-->http://www.youtube.com/watch?v=Q3gN6...eature=related

  20. #20
    Veteran Member Three Rings darkstar's Avatar
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    Re: B7 Key Fob for B6 DIY

    amen! you guys are great!!!

  21. #21
    Veteran Member Four Rings SeKKeY's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by derleicaman View Post
    Which part do you want me to do?
    i would totally pay you to do this, as would others
    USP CLUB MEMBER #10

    Stage 2++++++++ JHM B7 S4

  22. #22
    Veteran Member Four Rings aLeXliu911's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by Dos::Avants View Post
    Was this at a dealer?
    i bought the key from this link.
    http://cgi.ebay.com/ebaymotors/UNCUT...spagenameZWDVW

    and get it cut from one of my friends, usually it won't cost you more than 20USD to cut the key blade.
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  23. #23
    Veteran Member Three Rings audi314's Avatar
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    Re: B7 Key Fob for B6 DIY

    ^^ yea the only problem is finding some place to cut the key. I dont know of any one around Atlanta.
    I had a BT Audi!****> Lost at Barber MSP 11/1/09

    Hero-->http://www.youtube.com/watch?v=Q3gN6...eature=related

  24. #24
    Veteran Member Four Rings T0M3K's Avatar
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    Re: B7 Key Fob for B6 DIY

    Damn I HATE YOU
    I just broke mine, that shit was glued in, didn't pop out for nothing, it then just broke. So now I have two sets of non working keys. I have NO LUCK at all.

    PS No, I don't hate you, I hate the fact that my key wasn't as nice as yours, my spare also looked locked in, so I didn't risk breaking another one. I guess no B7 FOB for me then (unless dealer will be nice to reprogram it or something)

  25. #25
    Veteran Member Three Rings derleicaman's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by T0M3K View Post
    Damn I HATE YOU
    I just broke mine, that shit was glued in, didn't pop out for nothing, it then just broke. So now I have two sets of non working keys. I have NO LUCK at all.

    PS No, I don't hate you, I hate the fact that my key wasn't as nice as yours, my spare also looked locked in, so I didn't risk breaking another one. I guess no B7 FOB for me then (unless dealer will be nice to reprogram it or something)
    Are you talking about the immo chip? Mine looked glued in on the B6 key, but it was just a pressure fit. What did you use to pry it out? Dealer cannot re-program a used immo chip, only a virgin one.

  26. #26
    Veteran Member Four Rings aLeXliu911's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by audi314 View Post
    ^^ yea the only problem is finding some place to cut the key. I dont know of any one around Atlanta.
    send the key to me and i will ask my friend to cut it for you. all you need to pay is 10CND for cutting the key and the postage.
    BetaAlphaTau member #11

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  27. #27
    Registered Member Two Rings iop9000's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by derleicaman View Post
    No, I didn't take pics of this procedure. It is a real pain in the a** though. Look at the pictue of the two key shanks. You need to grind down the B6 key shank to match the profile of the B7 shank. You also need to dremel a channel into the key for the roll pin to lock the blade. I used a small grinding/cutting wheel on the dremel to do this. Study the picture of the two key blades and I think you'll understand what needs to be done.
    can u please post a pic of your key fob? ( sideview- closed ) Thanks.

  28. #28
    Veteran Member Four Rings T0M3K's Avatar
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    Re: B7 Key Fob for B6 DIY

    Yeah, that immo chip, it came out nicely from B7 FOB, but on two keys it is just like glued it, I tried prying it with a pick but it would move, I actually used the anchor point as shown on the picture and plastic broke, I tried getting underneath and it snapped. Mine wasn't as clean as yours, it was covered with some glue or something, I should've just break the key completely and file the chip off. I looked at second FOB and it's the same. I wonder if valet key has easier to rip off immo-chip.

  29. #29
    Veteran Member Three Rings derleicaman's Avatar
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    Re: B7 Key Fob for B6 DIY

    Wow, that's f****d up! Both my keys were the same, no problem getting out the chip.

    Try this website, keyman.com. They listed immo chips for $4.77 ea. Ours looks like the one they listed as Magmos 48.

  30. #30
    Veteran Member Four Rings T0M3K's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by derleicaman View Post
    Wow, that's f****d up! Both my keys were the same, no problem getting out the chip.

    Try this website, keyman.com. They listed immo chips for $4.77 ea. Ours looks like the one they listed as Magmos 48.
    I tried the website, was that the right one? And I wonder if dealer would reprogram B7 Fob, worth a try.

  31. #31
    Veteran Member Three Rings derleicaman's Avatar
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    Re: B7 Key Fob for B6 DIY

    That site seems to be a handyman service now! I'll keep searching. I came up with this about 2 months ago. Place listed about 40 types of immo chips for sale.

  32. #32
    Veteran Member Four Rings T0M3K's Avatar
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    Re: B7 Key Fob for B6 DIY

    If I got a virgin chip then after trimming they key, all I would need is dealer programming it to the car (or maybe even do it myself)

  33. #33
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    Re: B7 Key Fob for B6 DIY

    Hi, i took my key apart while was waiting for my b7 key to arrive, there was no chip inside?, i also noticed that there is no immobilizer light on the dash, i phoned audi and they said that it left the factory with one, suppose i`ll have to wait till the b7 key arrives so i can get it cut and check it, does everyone have a light on the dash?

  34. #34
    Veteran Member Four Rings Coderedpl's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by dannyb165 View Post
    Hi, i took my key apart while was waiting for my b7 key to arrive, there was no chip inside?, i also noticed that there is no immobilizer light on the dash, i phoned audi and they said that it left the factory with one, suppose i`ll have to wait till the b7 key arrives so i can get it cut and check it, does everyone have a light on the dash?

    You mean the light to tell you the alarm is on?
    That's on the drivers side door as far as i remember. It should be on the side closer to the back of the car.

    Not sure how to explain it. Look above the switches, where you can rest your hand, and then go to the back side of door, should be a little red LED light there.

    Sorry to go off topic, tried to help :P

  35. #35
    Veteran Member Four Rings T0M3K's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by dannyb165 View Post
    Hi, i took my key apart while was waiting for my b7 key to arrive, there was no chip inside?, i also noticed that there is no immobilizer light on the dash, i phoned audi and they said that it left the factory with one, suppose i`ll have to wait till the b7 key arrives so i can get it cut and check it, does everyone have a light on the dash?
    My immobilizer light on the dash never lits up, except for when I flip the switch initially for a like a second or less.
    When I took my keep apart I didn't see it either, because I was looking at the wrong half. Your may be glued in and appear hidden.

  36. #36
    Veteran Member Three Rings derleicaman's Avatar
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    Re: B7 Key Fob for B6 DIY

    Quote Originally Posted by dannyb165 View Post
    Hi, i took my key apart while was waiting for my b7 key to arrive, there was no chip inside?, i also noticed that there is no immobilizer light on the dash, i phoned audi and they said that it left the factory with one, suppose i`ll have to wait till the b7 key arrives so i can get it cut and check it, does everyone have a light on the dash?
    You have to have an immo chip inside your key, otherwise you would not be able to start the car. Study my pics to see where it is hidden. Make sure you're looking at the correct side of the key head.

    The immo light is one of the idiot lights on the upper left of the center of the instrument panel, between the speedometer and the tach. It looks like a little car symbol with the key on it. You normally will not see this lit up.

    The blinking light on the driver's door just confirms the alarm is active.

  37. #37
    Active Member One Ring
    Join Date
    Feb 23 2008
    AZ Member #
    25623
    Location
    Liverpool

    Re: B7 Key Fob for B6 DIY

    Thanks for the reply`s, turns out after taking the key apart again it`s glued in and is hidden, the light on the dash your talking about with the symblo of a car with a key over it isn`t there, i got a key off e-bay and had it cut tried to start the car, it started for a second and then cut out with the word "safe" in the milage indicator window, so turns out i do have one, how stupid do i feel ha ha, how would i remove a glued in one without damaging it?

  38. #38
    Veteran Member Three Rings derleicaman's Avatar
    Join Date
    Aug 11 2005
    AZ Member #
    7572
    Location
    NW Suburban Chicago

    Re: B7 Key Fob for B6 DIY

    ^^^This can be a little tricky. One of the guys trying it broke his immo chip. You might try an X-acto knife to score the "glue" on either side of the chip. Then carefully pry up the chip, working on each end a little at a time. I think if you try to pry from the middle it may break. It is a little glass capsule with electronics inside, so be gentle. The other method would be just to butcher the old key head, cutting around the chip, but then you have ruined your old key head too. I've removed two so far without issue. One looked glued in, maybe wax. The other one came out clean.

  39. #39
    Senior Member Three Rings Hotel Guy's Avatar
    Join Date
    Oct 07 2007
    AZ Member #
    21619
    Location
    Chicago

    Re: B7 Key Fob for B6 DIY

    Just finished doing this mod. Thanks for the write-up.

    The only thing that I have left to do is have my remote programmed. Does anyone in the Chicago area have a Vag-Com that they would be willing to help me out with? I live in Lincoln Park. Thanks

  40. #40
    Veteran Member Four Rings T0M3K's Avatar
    Join Date
    Sep 14 2007
    AZ Member #
    21078
    Location
    Valley Stream, NY

    Re: B7 Key Fob for B6 DIY

    Any word on immo chips? I will go to the dealer and see what he will say (probably in lines, you can't do it)

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