Member Since: 02 Dec 2016
Location: blackpool
Posts: 406
Key programming
I’ve a D3 key for a car I once owned that was lost but has turned up again.
Can I get a blade cut and reprogram the key using my Idd, or are they a once only use?
22nd Feb 2019 4:41 am
IndusD4
Member Since: 01 Dec 2011
Location: Sydney, NSW
Posts: 308
Yes you can reprogram a used key to another vehicle.2016 D4 TDV6 Corris Grey
IIDTool BT
22nd Feb 2019 5:31 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13568
Hi
As mentioned , the gap iid diagnostic does indeed program keys
Its the favoured tool to use
11th Mar 2019 10:04 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72739
I thought keys could only be programmed once.
11th Mar 2019 10:44 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13568
Hi
That’s got me thinking as I thought u could re program keys more than once , but know ur considerably more experienced than myself
Also don’t know if the CJB has a maximum amount of times it will accept a new key
Last edited by gstuart on 11th Mar 2019 11:09 am. Edited 1 time in total
11th Mar 2019 11:06 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72739
Please wait until someone that actually knows these things comes along. I’ve dredged that out of a dim and distant memory, plus been on the beer.
11th Mar 2019 11:08 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13568
11th Mar 2019 11:11 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13568
DSL wrote:
Please wait until someone that actually knows these things comes along. I’ve dredged that out of a dim and distant memory, plus been on the beer.
Hi
I need to eat some humble pie as ur spot on, they can’t be over written , sincere apologises
The transponder is powered by a rechargeable battery and is contained within the processor on the PCB, which also controls the remote operation of the Central Locking System (CLS). A separate coil on the PCB is used by the transponder to receive the signals from the transponder coil on the ignition switch. The coil is also used to generate the current required to recharge the battery.
The transponder has a 256 byte Electronic Erasable Programmable Read Only Memory (EEPROM), which is programmed with vehicle identification data and a unique identification code. This information is stored in one of 30 key 'slots' within the CJB. When energized, the transponder emits the coded information which is received by the CJB. The CJB checks that the key is valid by confirming the received data before granting permission to start the engine.
******The information programmed into the transponder cannot be overwritten. If a key is lost or is no longer required, T4 can be used to disable the key to prevent it being used on the vehicle.*****
11th Mar 2019 11:22 am
johnlad
Member Since: 02 Dec 2016
Location: blackpool
Posts: 406
Just to update:: couldn’t program existing key. So purchased a fob from eBay £14.99 and that programmed immediately, then had the key cut from a photo from-Keys in the Post through EBay £17.99,
Fitted the newly cut blade into new fob, and have a fully working 2nd key.
27th Mar 2019 7:12 am
ianm27
Member Since: 02 Jun 2016
Location: Hertfordshire
Posts: 2154
Uncle Ray's spare wheel protector
Limo Tint
Blackvue front & rear dashcam
Cruise control switch pack
Bodsy's remote for FBH
27th Mar 2019 11:10 am
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8041
D3 keys cannot be re-programmed, D4 keys canIt can when others can't,
It will when others won't,
It goes where others don't.
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