Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

Re-Programming VT Commodore Key

Discussion in 'VT - VX Holden Commodore (1997 - 2002)' started by liam_p, Apr 9, 2011.

  1. lufkin

    lufkin New Member

    Messages:
    721
    Likes Received:
    6
    Trophy Points:
    0
    Joined:
    Mar 20, 2009
    Location:
    SA - Victor Harbor
    Members Ride:
    WH Manual LS1 Statesman & VT V6 Calais
    how do you get the case open without breaking it, i always manage to make it looks ugly when i pull them apart lol
     
  2. TazzI

    TazzI Envyous Customs

    Messages:
    1,048
    Likes Received:
    294
    Trophy Points:
    83
    Joined:
    May 24, 2011
    Location:
    W.A
    Members Ride:
    VE SS Ute
    To be honest, you dont. lol

    Iv found buying the cheap chinese holden case copies to be of better design, they clip in nicer and can be easily pulled apart. Using a genuine key case just ends up mashing the plastic no matter how careful you are!
     
  3. sandmanxx7

    sandmanxx7 New Member

    Messages:
    2
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Jun 3, 2014
    Location:
    brisbane
    Members Ride:
    VT
    Ok so i followed your instructions. My new remote now works to start the car but the central locking and boot release buttons on the remote still dont work :( . looks like i still need to pay the key guys :(
     
  4. sandmanxx7

    sandmanxx7 New Member

    Messages:
    2
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Jun 3, 2014
    Location:
    brisbane
    Members Ride:
    VT
    didnt work. i have the remote working to start the car from the other step by step insruction but still buttons dont work :(
     
  5. The1

    The1 A Memcal a Day Keeps..

    Messages:
    2,352
    Likes Received:
    41
    Trophy Points:
    48
    Joined:
    Jan 12, 2005
    Location:
    QLD
    Members Ride:
    VS V6 Berlina Auto
    Pre VS will need a tech1 and VT and up will need a tech2 to program a new key, if you didn't need one of these then every tom dick and harry would be sealing cars left right and centre.
     
  6. styly

    styly New Member

    Messages:
    7
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Jun 4, 2014
    Location:
    sydney
    Members Ride:
    1998 Holden Commodore VT Executive Sedan
    and if you dont have any keys

    Hi there it looks like you are the one who knows the best about this subject.

    I'd like to ask you if there is any solution once you lost all yoru keys. I have a 1998 Holden Commodore VT Executive Sedan and i lost my last key and now i have no idea of what to do.

    I was going to buy a C900 and blank key (got it already) but i'm not sure that the C900 will work with it and anyway i need a key cut but without the original key what can i do ?

    Cheers.
     
  7. franklinfrog

    franklinfrog Member

    Messages:
    581
    Likes Received:
    5
    Trophy Points:
    18
    Joined:
    Oct 6, 2009
    Location:
    Brisbane
    Members Ride:
    VY SS Wagon 5.7 Auto Wikid Postie Bike
    I typed this a while ago for someone.....same applies to you.... locksmith with the right connections required.

     
  8. Super_Low 91

    Super_Low 91 ┌∩┐(◕_◕)┌∩┐

    Messages:
    482
    Likes Received:
    4
    Trophy Points:
    18
    Joined:
    Sep 9, 2008
    Location:
    Aussie
    Members Ride:
    Not a Commodore
    Drivers license and rego papers to Holden an ask for a security print out. It will have all the codes you need, take it to a locksmith an he will be able to make you a complete new key.
     
  9. The1

    The1 A Memcal a Day Keeps..

    Messages:
    2,352
    Likes Received:
    41
    Trophy Points:
    48
    Joined:
    Jan 12, 2005
    Location:
    QLD
    Members Ride:
    VS V6 Berlina Auto
    You can put a key in with ign on, wait 2hrs i think then the overide will let you start it, or tow it to holden or another place with a scantool to program a new one
     
  10. styly

    styly New Member

    Messages:
    7
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Jun 4, 2014
    Location:
    sydney
    Members Ride:
    1998 Holden Commodore VT Executive Sedan
    Thank you, i went there and they gave me this security code to allow locksmith to cut the key. Now as i have a blank key but without chip inside i'm going to bye a new key with the chip VT in it and i believe that i will be able to program it using the key number and the security number that holden's gave me right ?

    I have a C900 programmer by the way
     
  11. gm1961

    gm1961 New Member

    Messages:
    109
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    May 29, 2005
    Hi All

    oh dear, this is a ongoing issue and very important , can we all get together and make 'the perfect faq' on this issue


    The critical info all VT's have the following info regarding the key set up

    BCM code - stored on the key head ( electronics ) the code is a 6 digit number , it never changes eg 112233 , this is the code burned into the BCM module , and the same must be on our key head

    Key cut code - the code that tells a locksmith the position of the zig zag key cuts , the code is one alpha and 4 numbers eg H1234

    From what i have been told the battery in the remote / head is only used to activate the remote central locking , some people say it will work totaly flat others say it will not, i have not experienced this and when it happen to me ( i hope it wont :) ) i will let everyone know
    As for the car recharging the key this again is not proven one way or another
    The only close truth to all of this is that on the key there is a small raised are / nipple , this terminal rubs on the ignition switch to provide an electrical contact, and can cause problem on older cars.
    Now if the key itself, the key head has 2 small screws that hold the key blade in, be careful , as one of the screw holes has a small metallic chain / wire this is important as that is part of the link up via the ignition barrel

    Now i am not sure if the VT's work this way, but there is a rolling code on many cars, this could be the holden way when they had separate remotes eg like the VP i had, each time you start the car it gets a pn code of the key,
    this is a math based number sequence eg today the code is 12345 , the next code will be 12874 as a example, the variation in the codes is a math formula, now the car stores the current code, it can then work forward or backwards x amount of codes

    Why is this important ???
    1) theft deterrent - years ago people could radio scan the cars remote frequency and get the radio code, this on early alarms was all that was needed, just like the older garage doors, sent the right frequency and the door opens, they then added codes, so the received and the sender units match up and realize its the correct sender not just someone in range or some one nearby with the same or similar frequency.

    2) Ok your spare key - with rolling codes, your old spare key that has not been used for a few years may now be out of sync - i have had this problem at work, we had about 8 cars all holden , and yes a few times with lost original keys, they grab the spare, it unlocks the door but wont start the car, ??? why well the keys had basically the orignal start and xxx amount of next codes, the car has been started many times over the years , so that spare key key have start code no #1 and even the next 200 codes , but the car has been started 999 times since then, the codes are now very old and out of sync or useless - i think the car was towed to holden or we paid for a on site visit and they reset the BCM or rematched the bcm to the current key so that they were in sync



    I have had in the past replaced the following

    Work
    VT wagon
    VZ wagon
    VE wagon ( yeah all the same bloke )
    VZ crewman

    Personal cars

    WH Statesman ( VX )
    VZ wagon
    VY SS
    VT SS

    Ok re the work cars, all were bought new and drivers had a key and a spare in the office, eventually a key is lost, so soe one takes the spare home, this particular drive lost the spare so had nothing
    Luckally the car were bought new, so to our local holden dealer with rego and a photo of the in number they gave us the BCM key code & the key cut code

    This will only work if you can guarantee that the car has the original BCM for the car, buying the car second had is not a guarantee, agreed you have a 9/10 chance if it being ok !!!

    Personal Cars

    WH - lost a key somehow
    VZ wagon - break and enter door and ignition smashed with something
    VY SS - bought used came with 1 key only
    VT SS - bought used came with 1 key only


    Ok the hard one first , VZ wagon

    To fix i went to holden and bought genuine new door lock assembly , door handle , door key , ignition key.
    Make sure you get the full set not just a replacement lock with key , the full set has a collection of different springs and clips, each is numbered so that you can take out the original old / worn clip get the number and reassemble
    the new one with the same key code number, this will allow the same key ( metal zig zag key cut ) to be used

    I took these to a proper locksmith, also i took the original key , as i had 2 working keys i did not need any reprograming !!!

    All the locksmith done was look at my key , use the code that holden gave me and confirmed the key code numbers matched the cuts on the key shaft
    He then assembled the key springs / clip in the correct order and tested the key in the new ignition lock / door lock and they worked

    I then look them home and found a youtube video on reinstalling the ignition key , the door lock was simple enough as i had a pdf diagram of the door insides that holden gave me for fee while i was there

    Cost Holden new ignition key full @ $70 , door lock assembly @ $40-50 - note these are brand new holden with the mixed bag of key / cylinder spring

    Locksmith charged $20 or $30 for 5 mins work


    Ok the easy ones - WITH A WORKING KEY

    WH - VY - VT all had 1 key ( ok WH was lost 1 , the other 2 bought used and only had 1 key )

    There is only i simple and foolproof way to do this !!!

    Take your existing key and go to a locksmith and get a genuine holden key, have them first key a key blank and physically test that on the car.

    Ie just have a blank key cut, , then take it to your car and manually put it in the drivers door / boot / ignition key and make sure if physically unlocks and opens the car, the key should also unlock the steering lock and
    you will be able to crank the car over, but is will not fire up as there is no chip / key code so the engine will not run !!!

    What you are doing is proving that they key is correctly cut and will physically work as a key to unlock !!!

    At this stage if it does not work it is silly to go any further , getting the codes / programing done is a waste if you cannot turn the ignition key !!!
    If it wont open the door but turns the ignition key, you have a chance , you can use it as a spare or use the remote to electronically / remote lock the car so it is not a complete loss !!!

    Ok the key needs some rework . filing, or a new key cut , for now lets assume the key is physically fine


    Now the programing - - WITH A WORKING KEY

    Larger locksmith and more advance key cutting ./ engravers will need a special car code machine, they will advise you what model they have and what year model cars they can do. , Seeing out VT's etc are 15years
    old most people even with older machines will be able to do this ( i hope there machine is newer than 15 years )

    They can nly do this one way , take you existing working key and place it in the machine, it will read / copy the data of the key electronics , this is basically the BCM code and maybe what code it is up to now.
    Once the machine gives the ok , they take out the original key and install the new key ( note this can be a physical old key blade but a new key head / electronics )

    The machine will copy on to the relacemtn key head the codes.

    Now what do i do ???

    Ok your new key is cut right and coded right ,but not physically matched up to the BCM , it WILL NOT remote unlock the car or start the car at this stage - it is copied or prepared but not synced up !!

    You must do is the following

    1) take both keys
    2) either manually test the new key on the drivers door lock or use the old key to remotely unlock the door and disable VATS
    3) place new key in ignition barrel
    4) start the car with the new key , run the car minimum 15-30 seconds , then switch of , wait for the security light to flash , now put the key in and restart the car
    the car should restart if all is OK

    Remember , if this does not work, unlock the car with the old fob again to disable VATS and start the car, run for another 30 seconds , switch of and try again


    The key should work by now, if it does not , then talk to the locksmith, on the WH & VT i did not have a problem w with the VY i did, i followed instructions twice and failed, the locksmith came out tried and failed
    he then took both keys , re-read the code on original and recopied on the new one, and he performed the sync in the car, eventually all good


    Cost is $80-$120 depending where you go , a blank key cut is $15-$25 , and the remote cost them about $60 so resell and program for $90 , i doubt you will get genuine any cheaper than the $80 , be realistic and set the discount target at $100

    regards
    george
     
  12. styly

    styly New Member

    Messages:
    7
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Jun 4, 2014
    Location:
    sydney
    Members Ride:
    1998 Holden Commodore VT Executive Sedan
    And what is the transponder ?

    philips ? Temic ? Texas ?


     
  13. Jxfwsf

    Jxfwsf Well-Known Member

    Messages:
    4,852
    Likes Received:
    90
    Trophy Points:
    48
    Joined:
    Feb 20, 2011
    Location:
    Aus
    Members Ride:
    commodore
    Holden doesn't use a transponder....
     
  14. styly

    styly New Member

    Messages:
    7
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Jun 4, 2014
    Location:
    sydney
    Members Ride:
    1998 Holden Commodore VT Executive Sedan
    really so what is it ?
     
  15. oska

    oska Active Member

    Messages:
    815
    Likes Received:
    43
    Trophy Points:
    28
    Joined:
    Oct 14, 2010
    Location:
    melbourne
    Members Ride:
    vx custom 600RR
    It's a 93s46w EEPROM that stores the code
     
  16. Jxfwsf

    Jxfwsf Well-Known Member

    Messages:
    4,852
    Likes Received:
    90
    Trophy Points:
    48
    Joined:
    Feb 20, 2011
    Location:
    Aus
    Members Ride:
    commodore
    It's a physical circuit board (requires physical connections to work) the above mentioned eeprom storing the important stuff, no rf proximity magic involved
     
  17. styly

    styly New Member

    Messages:
    7
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Jun 4, 2014
    Location:
    sydney
    Members Ride:
    1998 Holden Commodore VT Executive Sedan
    Alright i see, but now i don't understand then how to program the eeprom then ? if you need to be connected physically to the key to do it then what sort a programmer you need to use ?
     
  18. Jxfwsf

    Jxfwsf Well-Known Member

    Messages:
    4,852
    Likes Received:
    90
    Trophy Points:
    48
    Joined:
    Feb 20, 2011
    Location:
    Aus
    Members Ride:
    commodore
    as already mentioned in the thread, either a tech2 to do in car or take it to a locksmith that can duplicate the keys.
     
  19. gm1961

    gm1961 New Member

    Messages:
    109
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    May 29, 2005
    Hi All

    The BCM is fixed in the car it has its unique BCM key code eg 112233

    You original / working keys have this code as well , so it matches

    Now to replace a missing key you need 2 things , you get a new key cut - the blade , and then you need a new key head to be coded to the cars BCM code

    The locksmith or whoever does the work, reads the code of the old key in there machine, then places then new key with the new head unit and 'pastes - burns ' the bcm code into it

    Now this is almost done

    I 'suspect' each key head has some sequence or serial number because if it did not it would work right away , i mean it is a exact copy is if not ??

    But you need to use the sequence i described before for 2 reasons , the old key needs to open the car door and unlock using the key head remote button / unarm the security system

    Now you can insert the new key in the ignition

    The small metal part that sticks out of the key plastic and rubs along the steering lock ring is the physical contact between the keys electronics and the BCM - think or old school wiring or printer cable ( pre internet wireless or wifi )

    Now the car should sync up , this new key head has been accepted by the BCM as a 'authorised key'


    There is 2 other alternatives ,

    1) go to holden and get a new key made up, they will work of the specs of the chassis number, but if anything in the car has changed eg BCM or key locks it wont work
    2) from the wreckers get a matching BCM module to suit our car there is a sticker on it eg 313 313 685 815 etc , a quick look at ebay shows a page full $50 for a bcm with 2 keys and 4 door handles and door lock and ignition barrel
    cheap enough. This is the only way a entire set and the BCM to key reprogram is not required , the holden tech 2 or tech 3 setup will cost $$$ , i have never done this but in reading a few other posts $150-200 is common, especially if you changed BCM and they need to reset things like fuel tank type , air bag , engine trans etc etc


    regards
    george
     
  20. Jxfwsf

    Jxfwsf Well-Known Member

    Messages:
    4,852
    Likes Received:
    90
    Trophy Points:
    48
    Joined:
    Feb 20, 2011
    Location:
    Aus
    Members Ride:
    commodore
    What forum "encrypts" it?
    Why would anyone with half a brain click on it when you can mouse over it and see the url, a quick google search of item.taoboa (partial link url) shows plenty of info about viruses being picked up from the likes of mcafee, symantec etc etc.

    Now from a non windows based machine all it shows is a $15 scantool without any english on the page... no language option to change. No harm in asking holden, if you are legit and own the vehicle you don't need some dodgy 3rd party thing.
     

Share This Page