DIY Changing Fob From Old Diamond Key To New Facelift Style Fob
#52
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It seems my original key battery is also dead, as it does not activate/deactivate the alarm/remote unlocking. What battery does it take, as I want to replace the battery as well while changing the housing.
#53
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I have just completed this mod (bought the key fob from the linked ebay site BMW 3 5 7 Series x5 x3 Z4 E38 E39 E46 M3 M5 Remote Key Fob Flip Conversion Case | eBay) and I must say, I'm half half about it:
a) I find that the unlock/lock buttons are VERY hard to press - it's as if its rock solid!
b) It seems like the key fob blade is not long enough. Whenever I attempt to twist the key to turn on the ignition, it seems as though the key does not make a good connection with the ignition as a result of black keyfob being too wide. As a result, I have to create what would be best described as an "L" like shape (as if I was closing the blade into the keyfob) so that the key fits in perfectly into the ignition, in order to start the car. Creating the "L" shape takes a little getting used to, but it's a tad bit annoying. If the blade was say 1mm or even 2mm longer, then there would be no issue.
Has anyone experienced any of the above two issues with their keyfobs?
a) I find that the unlock/lock buttons are VERY hard to press - it's as if its rock solid!
b) It seems like the key fob blade is not long enough. Whenever I attempt to twist the key to turn on the ignition, it seems as though the key does not make a good connection with the ignition as a result of black keyfob being too wide. As a result, I have to create what would be best described as an "L" like shape (as if I was closing the blade into the keyfob) so that the key fits in perfectly into the ignition, in order to start the car. Creating the "L" shape takes a little getting used to, but it's a tad bit annoying. If the blade was say 1mm or even 2mm longer, then there would be no issue.
Has anyone experienced any of the above two issues with their keyfobs?
#54
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I think I just need to wear it down a bit, and see how I go from there. I'm hoping it will get better soon.
#55
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Hi all, I need some info about this mod, I bought this fob and it seems great but my original fob does not have the removable chip, it seems to be attached to the blade.
Is there a way to make this work? I read someone did it and it worked.
Help is appreciated.
Is there a way to make this work? I read someone did it and it worked.
Help is appreciated.
#56
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As a first thought, can you not just connect the two together using a little cable or something ? Sorry for my ignorance.
#57
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The seller says it has to have a separate chip like the second picture, I feel in mine the chip is attached to the base of the blade under that cover.
I like to hear some ideas or suggestion before I cut open the base of my key and mess it up.
#58
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My Ride: BMW 530D M-Sport, Steptronic, Grey Metallic,
Retrofits: Sport Comfort Black Leather, M-Sport Alu Cube Dash Trim, Shadow Line Trim, CCC Pro Nav, Full M5 Conversion, M5 Mirrors, Quad M5, 20" M5 Gloss Black wheels, AC High Panel, Internal Boot Release,
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Hi mate if your circuit is all one pirce and doesnt have a separate chip its fine it will work as this is what most of us have done our imobolizer chip is mounted to the circuit board
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#60
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So I finally received my Key Fob today, and I think I have ordered the wrong key. Here are some pictures for comparison:
![](https://5series.net/forums/attachments/diy-do-yourself-14/140510d1363788382-diy-changing-fob-old-diamond-key-new-facelift-style-fob-picture-01.jpg)
![](https://5series.net/forums/attachments/diy-do-yourself-14/140511d1363788390-diy-changing-fob-old-diamond-key-new-facelift-style-fob-picture-02.jpg)
My key does not have the notches on the sides, but the key blade received has notches as in the picture.
Correct me if I am wrong, but I think the key fob needs to go back. Please enlighten me.
Cheers.
![](https://5series.net/forums/attachments/diy-do-yourself-14/140510d1363788382-diy-changing-fob-old-diamond-key-new-facelift-style-fob-picture-01.jpg)
![](https://5series.net/forums/attachments/diy-do-yourself-14/140511d1363788390-diy-changing-fob-old-diamond-key-new-facelift-style-fob-picture-02.jpg)
My key does not have the notches on the sides, but the key blade received has notches as in the picture.
Correct me if I am wrong, but I think the key fob needs to go back. Please enlighten me.
Cheers.