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Model specific boards => Golf mk4 => Golf mk4 how to guides + info => Topic started by: old_n07 on 31 March 2009, 21:22

Title: Buying a new key for your Golf or Bora
Post by: old_n07 on 31 March 2009, 21:22: Getting spare keys working on the MK4 platform can be a bit of a nightmare at first glance so here are a few pointers:

Key overview:

There are four types of key on the MK4 platform all have an immobiliser transponder fitted to facilitate starting the vehicle.

1. Standard non-remote key

(http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/noneremote.jpg)

2. Emergency key (plastic):

(http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/emergencykey.jpg)

3. Two button remote early type:

(http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/round1.jpg)

4. Two button remote late type:

(http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/sqr1.jpg)

The two button types can be seperated in two by grasping the key firmly in both hands and pulling the two halves appart, the top half with the buttons contains the remote control for locking and unlocking the car and the bottom half has the key blade and immobiliser chip inside.

Top

(http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/roundtop.jpg) (http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/squaretop.jpg)

(http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/split%20top/step1.jpg) (http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/split%20top/step2.jpg) (http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/split%20top/step3.jpg)

(http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/split%20top/step4.jpg) (http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/split%20top/step5.jpg) (http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/split%20top/step6.jpg)

Bottom

(http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/btm1.jpg)

(http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/bottom/1.jpg) (http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/bottom/2.jpg) (http://i65.photobucket.com/albums/h208/old_n07/key%20inners/DSCF0295.jpg) (http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/chip.png)

The immobiliser chip is highlighted in red in the last picture, these are made of glass and are very fragile - they are glued into the original VW keys and are next to impossible to remove without breaking and once cracked they don't work.

Spare Keys \ Remotes
1. Remotes (top half of key)

If you want a new \ replacement remote fob then you need to make sure that the part number and frequency of the remote matches your current key fob. The replacement key fob can be a used item.

To check your current key frequency you need to seperate the key in half then turn the top half over, on the back is the part number and frequency info

(http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/info.jpg)

(http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/closeup.png)

There are two frequencies make sure you get the correct one!

2. Keys (bottom half of remote key or standard non-remote type key)

As the key bottom half contains the immobiliser chip there are a few things to look out for when buying a new \ replacement key, as keys that have been coded to an immobiliser 3 vehicle can't be recoded to a new vehicle as the chip is write once.

Ideally buy a completely new key that has not been coded to another car before.

If your car is immo2 based:

You can buy a second hand key but you will need a new key blade to be cut, however the key can't have come from an immo3 vehicle as it can't be recoded

If you car is immo3 based:

The key can't be second hand (used), you will need a key bottom with a virgin transponder fitted to enable it to be coded to your car.

Beware on eBay when looking at keys, the add may say new key blade fitted, this however does not mean that the transponder chip is new and uncoded so you might end up with a key that unlocks the car but can't be coded to start it afterwards - If in doubt explicitly ask the seller if the key has been coded to a vehicle or not and does it contain a virgin transponder.

(http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/th_parts1.png) (http://s65.photobucket.com/albums/h208/old_n07/FAQS/Keys/parts1.png) (http://i65.photobucket.com/albums/h208/old_n07/FAQS/Keys/th_parts2.png) (http://s65.photobucket.com/albums/h208/old_n07/FAQS/Keys/parts2.png)

Once you have your new key it will need coding to your car, you will need the SKC (secret key code) to match the immobiliser chip to the car but you don't need the SKC to match the remote part for locking and unlocking the vehicle, some older cars had the SKC provided on the key tags that came with a new car. If yours didn't then it can be retrieved with some third party tools such as Vagtacho.

VCDS (VagCom) can't retrieve the SKC code

Hope that helps

Neil

UPDATE:

Here are a couple of links to how to's on coding in new keys

The key in the door method for matching the immobiliser: http://uk-mkivs.net/forums/t/17868.aspx

Using VCDS (Vagcom) you will need the SKC code to do the immobiliser matching though: http://uk-mkivs.net/forums/t/257087.aspx
Title: Re: Buying a new key for your Golf or Bora
Post by: Rhyso on 31 March 2009, 21:25: Top guide Neil :afro:
Title: Re: Buying a new key for your Golf or Bora
Post by: richw911 on 31 March 2009, 21:28: Quote from: Rhyso on 31 March 2009, 21:25
Top guide Neil :afro:

Indeed awesome :cool:
Title: Re: Buying a new key for your Golf or Bora
Post by: Car nut on 01 May 2009, 14:05: Quote from: Rhyso on 31 March 2009, 21:25
Top guide Neil :afro:

+1 :wink:
Title: Re: Buying a new key for your Golf or Bora
Post by: Mr_Orange on 24 May 2009, 18:59: Good job! Just what the Dr ordered!

I only got the one key (late 2 button type).
Title: Re: Buying a new key for your Golf or Bora
Post by: Wurzel on 20 July 2009, 00:18: My key remote seems impossible to open, like it's welded itself shut. I've tried sticking a screwdriver in the slot when the key is out but it's just chewing up the rubber/plastic. Any tips?

Also where can you get the keys cut? Just a normal key cutting store?
Title: Re: Buying a new key for your Golf or Bora
Post by: Mr_Orange on 20 July 2009, 17:19: Quote from: Wurzel on 20 July 2009, 00:18
My key remote seems impossible to open, like it's welded itself shut. I've tried sticking a screwdriver in the slot when the key is out but it's just chewing up the rubber/plastic. Any tips?

Also where can you get the keys cut? Just a normal key cutting store?

Get a nice French polish nail job and try again?

You can only get these cut as specialist key cutting stores like Timpson or at a VW dealership
Title: Re: Buying a new key for your Golf or Bora
Post by: Wurzel on 20 July 2009, 18:38: I honestly think the previous owner must have glued the two halves together! There seems to be glue residue at certain points.

How much does the cutting cost?
Title: Re: Buying a new key for your Golf or Bora
Post by: Mr_Orange on 01 September 2009, 16:56: :embarassed:

I've just been bitten by a part number issue:

I've got a "753N" remote operating at 434Mhz

Seems there is also a "753N" operates at 433MHz :huh:

Make sure when you are buying that you double check the part number and match the frequencies!!
Title: Re: Buying a new key for your Golf or Bora
Post by: mar_k on 03 December 2009, 18:45: not sure if ive read this wrong, but can a used mk4 golf key which was registered in 2000 be recoded to a different car or do you need a virgin chip?
Title: Re: Buying a new key for your Golf or Bora
Post by: mar_k on 03 December 2009, 18:51: http://cgi.ebay.co.uk/VW-VOLKSWAGEN-GOLF-MK4-BORA-PASSAT-SEAT-2BUTTON-KEY-FOB_W0QQitemZ220520517883QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item33580c10fb

the above key has the same frequency and part no. can this be reprogrammed to my car as its already used
Title: Re: Buying a new key for your Golf or Bora
Post by: Dub-77 on 03 December 2009, 21:58: Quote from: mar_k on 03 December 2009, 18:45
not sure if ive read this wrong, but can a used mk4 golf key which was registered in 2000 be recoded to a different car or do you need a virgin chip?
I bought a 2nd hand key on ebay for my 1999 golf and it prog to my car, there are differant types of immo chips though so be carefull...... get the correct chip.... I got my key head part number from my copy of ETKA 7. If you want a pt number to get a key from another source like http://www.klck-ltd.com/ then give me ya vin and ill look it up for ya. :afro:
Title: Re: Buying a new key for your Golf or Bora
Post by: Dub-77 on 03 December 2009, 22:02: Quote from: mar_k on 03 December 2009, 18:51
http://cgi.ebay.co.uk/VW-VOLKSWAGEN-GOLF-MK4-BORA-PASSAT-SEAT-2BUTTON-KEY-FOB_W0QQitemZ220520517883QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item33580c10fb

the above key has the same frequency and part no. can this be reprogrammed to my car as its already used
The remote part should Re-Prog (as long as pt number the same etc) via the key in the door method, but not sure about the Key Head...
Title: Re: Buying a new key for your Golf or Bora
Post by: mar_k on 05 December 2009, 09:32: ok cheers for the help fella,

ill sort out my vin alittle later and see what we come up with.

the way i read the guide above immo3 keys cant be reprogrammed which are usualy on cars built in 2001 or newer but anything registered in 2000 will have reprogrammable keys with immo2 imobiliser can anyone tell me if thats correct or have i got that totaly wrong?
Title: Re: Buying a new key for your Golf or Bora
Post by: richw911 on 06 December 2009, 21:14: Quote from: mar_k on 05 December 2009, 09:32
ok cheers for the help fella,

ill sort out my vin alittle later and see what we come up with.

the way i read the guide above immo3 keys cant be reprogrammed which are usualy on cars built in 2001 or newer but anything registered in 2000 will have reprogrammable keys with immo2 imobiliser can anyone tell me if thats correct or have i got that totaly wrong?

Correct :smiley: Check to make sure you have immo2 tho
Title: Re: Buying a new key for your Golf or Bora
Post by: mar_k on 07 December 2009, 09:12: ok cool, thanks.

is there anyone on here with vagtacho that is willing to programme a new key when i get it?
Title: Re: Buying a new key for your Golf or Bora
Post by: smiiithy on 13 January 2010, 17:31: Just the post I was looking for

Has anyone used these...

http://www.dealextreme.com/details.dx/sku.16404 (http://www.dealextreme.com/details.dx/sku.16404) ?
Title: Re: Buying a new key for your Golf or Bora
Post by: richw911 on 13 January 2010, 19:29: Yeah few people on here have said they are very good :smiley:
Title: Re: Buying a new key for your Golf or Bora
Post by: bigpoppa81 on 01 February 2010, 12:47: I've got a two button key fob on my 1999 gti, I'm wondering if I can buy a new two button or even 3 button fob from the new mk4's and it will work?
Title: Re: Buying a new key for your Golf or Bora
Post by: Airmax on 03 February 2010, 21:49: Needing a little help here guys. Got a 2001 Gti. How do I find out if my key is immo2 or immo3.

Part no is: HLO 1JO 959 753 N
Frequency is 434 MHz. Does this mean I'm needing a VW Key fob for 434 MHz? Like this?

http://cgi.ebay.co.uk/VW-Golf-2-Button-Key-434-mhz_W0QQitemZ160400043872QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item2558966f60

What about the immo2 or immo3 thing though? Help!!!
Title: Re: Buying a new key for your Golf or Bora
Post by: Mr_Orange on 04 February 2010, 18:44: Quote from: Airmax on 03 February 2010, 21:49
Needing a little help here guys. Got a 2001 Gti. How do I find out if my key is immo2 or immo3.
Part no is: HLO 1JO 959 753 N.......

I had a horrible time trying to get a spare one of these. Seems this part number can be confused between two freqs types (2000/2001 was some sort of "special year" with changes to the Golf). I was lucky enough to find another same remote part on eBay. Got it re-programmed at VW with a brand new blade front end from VW.

As for different cluster types, dunno, I'd recommend you go by part numbers and get VW involved along the way. :wink:
Title: Re: Buying a new key for your Golf or Bora
Post by: delboy on 18 March 2010, 19:59: so how much did it cost at the stealership for the key ?
Title: Re: Buying a new key for your Golf or Bora
Post by: jnufcuk on 29 May 2011, 22:17: Hi this may be a stupid question but i have recently bought a 2002 aum gti and have only 1 key which isnt in the best condition (casing).

1) Can i buy the type 1 key and just get it cut so that i can use it as a spare?
2) the casing is in very bad condition so can i just buy a spare casing of ebay and swap the bits over?

Thanks guys
Title: Re: Buying a new key for your Golf or Bora
Post by: richw911 on 28 November 2011, 18:20: Worth noting if you have got a KVW100 Autowindow module installed and you code in a new key / add a new key will lose the "One touch" roll up feature. You can still perform the hold "lock" button roll up.

You can restore the new key FOB for the "One touch" roll-up feature with the following :

Put your key into the ignition and turn the ignition switch to "ON", there is no need to start the vehicle
Plug the KVW100 into your OBD-II interface plug. Make sure it is a snug fit. The KVW100 will give a single long beep, once it is fitted properly
When the green led light on the KVW100 is on, hold the driverÂ¡Â¯s door "lock" button
When you hear a long beep from the KVW100 again, release the door "lock" button
Wait for 2 minutes you will hear kvw100 give 3 short beep then pull it out (using the same USED kvw module originally used)
Title: Re: Buying a new key for your Golf or Bora
Post by: richw911 on 12 February 2012, 16:06: A guide to switch the bottom part for a newer type

http://forums.vwvortex.com/showthread.php?2941881