Picture of Volkswagen 4GB USB Flipkey for My MK2
I thought to myself: "Hey, I've got this Volkswagen Flipkey laying around. Let's see about cramming a 4GB USB drive in it". The one thing I did not want is to see the USB sticking out of the key. I wanted to keep it original looking.

I thought about trying to fit my retractable Cruzer drive, but upon further inspection, decided that it would be a huge challenge, plus I wanted to keep it original looking when closed. I happen to have a male - male USB cable that a friend gave me. This is why I went with the female USB connector here.

For this Instructable, I have already knocked out the laser side-cut key that went to my friend's new Beetle. I used a the key for my 1991 VW Golf and trimmed it to fit in this Flipkey.

Additionally, I was at a big box retailer and found a Kingston 4GB Micro SD w/ USB adapter. The USB was normally $25 - Marked down to $14.90. Add to that a $10 mail-in rebate - this whole project cost on the order of $5.00.

If you have to purchase the Flipkey or a USB, your costs will vary.
On with the Instructable.

Step 1: Getting the Pieces Together

Picture of Getting the Pieces Together
You will need the following items:

Volkswagen Flipkey
Micro SD card with USB adapter - I used a Kingston MBLY/4GBKR
A male USB connector
A female USB connector
4 wires or 4-wire ribbon cable
Dremel tool - Very handy!
Exacto knife
Low-Temp soldering iron and solder
Super glue
Baking soda - Trust me on this!
yayo015 years ago
How did you fit your MK2 key onto the fob?
ryan97128 (author)  yayo015 years ago
Pretty easy. Take your VW MK2 key to a locksmith. I recommend getting a fresh code-cut key (versus using a worn out key to start this project, a code cut key costs about $18)
Buy a MK2 Key with a metal head only - no plastic!
Next, partially open the flip key and knock out the pin that secures the laser-cut key in place (Use a tap hammer and a small drill bit or something to tap it out - keep the pin!!!!)
Compare the laser key to your MK2 key, line them up and etch a trace around the laser cut key onto the MK2 key.
Now, take that to a grinder and go to town, get close and finish with files until the MK2 key and the laser cut key bases look the same. Test fit.
Next, notice that the laser cut key has a vertical notch where that pin would line up and hold it for the flipkey. Using the edge of a file, make a shallow notch on the MK2 key that matches the laser cut key.
Reinsert the pin using needle-nose pliers and a small tap hammer. Test, it should work great!

The alternative is to cheat and buy a pre-fab VW HAA keyblank that will fit the flipkey. Check out www.keysforvw.com - Will run you about $20 w/ shipping

If you make it yourself, you have something to brag about! Good luck!

The EuroVan, during the Mk4 years, also got the switchblade key, but still utilized the AH style locks. That is the specific application of the HAA blank for those trying to find it, Eurovan 2000 thru 2003 (at least in U.S. production).

Hope this helps open some people's options!
ooH, ok cool man thanks a lot!. I never noticed that there was a pin holding the key blade on there. I thought the key and they moving part was all one piece, I will definitely be doing this soon.
by the way what MK2 do you have?
ryan97128 (author)  yayo015 years ago
A 1991 VW Golf.
Check it out:
whoa that's a pretty wicked system you got there. Those cross-hairs look pretty good too.
ryan97128 (author)  yayo015 years ago
Thanks, I bought it for $600 at a police auction, then I lowered and tinted it, put the wheels and badgeless grill/headlights on, stereo, etc. Lots of lookers
(YOUR N4 years ago
luv it
actswaddell6 years ago
I don't know what I just looked at...but it was very interesting. I am now going to hide all my electrical appliances...by the way I'm missing my VW key did I leave it at your house? Love Mom
Best comment ever
wtserg6 years ago
hello this was a very cool project I made two of the one with a 16 gb flash drive and one with a card reader and a 16 gb transflash card, but I used a micro usb female instead of a reg sized usb sorry for the photo my camera is old wtserg
lopez86756 years ago
could you somehow replace the key with a usb drive so when u press the key release button the usb drive flips out?
ryan97128 (author)  lopez86756 years ago
Due to the mechanics of this keyfob, it does not look like one could easily do that. With that said, someone could probably re-engineer the fob. For myself though, I use this as my car key, so I wanted to keep that function. If you decide to take on the task of a flip-out USB connection, I want to see it!! Thanks
gmjhowe6 years ago
Nice work, the clever soldering definitely make the final thing look more professional than having a usb plug sticking out all the time!
ryan97128 (author)  gmjhowe6 years ago
Thanks for the thumbs up!