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Discussion Starter · #1 · (Edited)
Recently I picked up a couple of new 3-button switchblade key cases because I had worn both of mine through the red panic buttons. They were über cheap on amazon, I think $11.99 each. So I rolled the dice and so did a number of other PWers.

They arrived today and I am pleased to report that after some fiddling, I got the guts of my old switchblade into the new case and it works perfectly and feels great. There were some difficulties, it wasn't as easy as I thought it would be, but overall not terribly hard. Since I have two, when I get my other key back from the mechanic Wednesday (with the new Raxles) I am confident I will be able to swap out the parts on the second one in 10 minutes or less.

Tools needed:
  1. Small phillips/crosspoint screwdriver (provided with new key case)
  2. Very small gauge nail or metal thumbtack (to push spring pins out)
  3. Small hammer
  4. Channel locks (to push spring pin back in)
  5. X-acto hobby knife or other thin tip sharp tool (to remove VW emblem from original key, if needed)
  6. Gasket seal or RTV (to secure RFID transponder in new key case)
  7. Fine tooth mill file or jewelers file

Here are the product photos and a few detail pics of the transfer process:

Jack, you were right. The shipper probably could have walked them to your door.


Because of the RFID (that isn't actually in there) the keys came packaged in anti-static bags. They each also came with a little cross-point screwdriver to open the case:


The new case pulled apart:


Manufacture date in 26th week of 2010. My original key was 41st week of 2003:


The two new halves of the case further split apart into subcomponents:


The new switchblade key case and blank (left) next to my original switchblade key (right):


New switchkey (top left), original switchkey (bottom right)


The new (bottom right), original (top left):


New (left), old (right):


Inside of old case where PCB is located. The only significant difference between the two keys became evident at this point. The perimeter of the old case is actually rubberized or fused to a rubber gasket, the new case perimeter is hard plastic. While the new case fits tightly with its other half, it would not IMO be very water resistant:


The linty, dusty edge of the old case where the softer rubber seal is around the seam perimeter:


The remote PCB removed. Seems like a I have been looking at a lot of Passat electronic bits recently. :nerd:


The PCB placed over the positioning pins in the new button case:


The battery from the old remote now in place in the new case:


The old key switchblade mechanism:


With the screw removed, the blade comes out easily. I had to tease the RFID capsule from a little glue in the slot on the lower half of the switchkey housing:


So here's where the work I didn't expect to have to came in. I reassembled the key several times with my old switchkey blade in the new housing—using the new button and spring, the old button and old spring, the new spring and the old button, the old spring and the new button—none of which produced the desirable and familiar flick open. I started to look at the new blank blade vs. the old blade and I found the hubs were a little different. I though the nubs on the old key hub may have been too high and were rubbing the new housing, slowing the "flick" action. So I filed them down a bit with no improvement. Then I examined the hub closely and found the blade and hub were actually separate parts. They were locked together with a spring steel pin. I used a very small gauge wire brad that I filed the end flat on to tap it out with a tack hammer. The following picture shows the three parts that resulted:


I disassembled the old blade and hub similarly and then used the old blade in the new hub. It was a hair thicker than the new blade, so I filed the back of the insertion tab on the old blade until it fit into the new hub socket. I aligned the locking slot with a sharp pick, and then using a pair of channel locks, slowly pressed the spring pin back into the bore to lock the blade in place. When I reassembled the new key case with the new key hub and the old key blade, it worked perfectly. Just the exact same "flick" I have been used to for almost 8 years. IMPORTANT NOTE: The RFID capsule fits very loosely in the new case, so I added a dab of RTV (the goo with a thousand uses) to the cradle to keep it from rattling around in there. New reassembled new case with my old switchkey vitals in it (left), the old key case, now empty (right):


So for $27 including shipping for both keys, I went from this:

To this (x2):


:D
 

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Warning you now, the emblem that comes packaged with this replacement key case is crap. If you don't peel off the plastic protector, I think you'd be fine, but the whole VW logo is already completely gone on mine and it's been 2 months or so.

I ought to make the DIY on how to transplant one of the older style fobs into this newer case (modification needed). It can be done with an exacto knife and some weird battery placement... :) That's how I got a switchblade key for my 98'!

Side note: Keith I always enjoy seeing you post, so many pictures and explanations.
 

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Discussion Starter · #3 ·
Warning you now, the emblem that comes packaged with this replacement key case is crap. If you don't peel off the plastic protector, I think you'd be fine, but the whole VW logo is already completely gone on mine and it's been 2 months or so.
Good to know, before I assemble the second key, I will remove the plastic protection cover on the logo emblem and hit it with a couple coats of clear wheel lacquer. That should retard the enamel from flaking off for a while.

:D
 

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Discussion Starter · #5 ·
Keith was your original fob shown as operating at 315 MHz? I know it isn't an issue considering you switched the electronics, just curious.
Yes. And revealingly, the original key has an FCC ID number, so it is clearly a U.S. spec key. The original key part number is HLO 1J0 950 753 AM. The new key case part number is 50W 1J0 959 753 DJ, which according to Aliexpress.com is Chinese-made in Pengjiang District. Now that is known, I feel I must restate that I find no fault in quality or workmanship of either of these replacement cases outside of the change in the electronics housing perimeter where the rubberized "seal" was not replicated. If I were concerned, I could probably apply a very thin touch of RTV around the inner rim to make sure the key could stand up to a brief plunge in H20.

Overall, highly recommended if you are able and willing to transplant the guts including the RFID capsule and swap the original switchkey blade into the new switchkey pivot/hub.

:thumbup:
 

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Recommending this one for the info base.
 

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Damn, you beat me to this!

I went through the EXACT same process as far as all the trimming, testing, not getting the desired "flick" back and so on. My Dremel tool with a grinding stone head worked exceptionally well.

In the end I just reused my old top portion because I found out the thickness of the hub you put the key into and the cutout which it fits into, and the switchblade buttons were slightly different sizes. Basically everything on my original OEM remote was a tiny bit wider. Not one single combination of old and new parts worked out.

I would also recommend having the new switchblade key blank cut to match yours and just popping the RFID capsule into the new piece if you want this new fob to be "perfect."
 

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Discussion Starter · #10 ·
Running protection test

You think clear nail polish could also have the same effect?
One of the new key case cover logos with no protection, the other with about 6 coats of clear wheel lacquer.





:wrench:
 

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Bought a couple of these blanks off of amazon a couple weeks ago. After checking with the stealer and every locksmith in Cincinnati I was convinced I had wasted my money. Now I am going to try swapping them out. Thanks for the great instructions!!
 

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Discussion Starter · #13 ·
I would also recommend having the new switchblade key blank cut to match yours and just popping the RFID capsule into the new piece if you want this new fob to be "perfect."
I solved the difference in blade tab fit with a few strokes of my detail file. I thinned its profile a hair and it slid in snugly. Once it seated in far enough, the spring pin will fit and secure it quite firmly.

If you can get the old blade to fit into the new pivot, you need not sweat having the new blade cut at all.


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Discussion Starter · #15 ·
It needs to be wound 1 complete turn plus whatever fraction after that to get it aligned.

If you are using your old key blade and old key pivot too, the switch action will not be smooth. I had to go the extra step of replacing new key blade with old one in the new key pivot. Then the action was quick, smooth and complete.


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It's pretty hard to get those key blades cut because apparently they aren't the same material as the OEM's. I remember trying to get one cut for my old B5 and the stealership tried and it looked all mangled and he said he broke 3 cutting tools trying to cut it and it wasn't working.
 

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Locksmith that cut mine just said to make sure to get a brass blade. Maybe the one that you got was a steel blade and those are much harder to cut.
I agree, make sure you get the nickle coated brass.
The steel ones are a poor replacement.
The brass keys are made to wear, a steel key would play havoc with your ignition internals.
 

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Discussion Starter · #19 ·
I agree, make sure you get the nickle coated brass.
The steel ones are a poor replacement.
The brass keys are made to wear, a steel key would play havoc with your ignition internals.
If the blades were nickel plated brass, wouldn't the brassy yellow be revealed when they are cut? My OE keys are shiny silver through and through, so I suspect the metal is in fact stainless steel.

Just sayin'. :angel:
 

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Maybe they are plated after being cut, although I tried scratching an OEM blade, but still looked shiny. They could be plated extremely well or a certain alloy was used. And considering on how many occasions I've used the key as a prying tool, I highly doubt it's brass. However, most locksmiths have tools for brass blades only
 
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