Key programming with SDD
I bought a car that only came with one aftermarket key. I ordered another key from the UK cut to code and now I will need to program it to the car. I thought I recalled a post about the steps to do this in WDS/SDD, but I can't find it after much searching. Note I am looking to pair/program the key transponder, not the fob portion.
Is there a summary of the steps to carry out? I recalled there was a step that seemed obvious and it wasn't the one to take, instead a different selection needed to be made. I don't want to brick the car and need to have it towed to a dealer. I do have SDD and a genuine Mongoose cable to do the programming.
Is there a summary of the steps to carry out? I recalled there was a step that seemed obvious and it wasn't the one to take, instead a different selection needed to be made. I don't want to brick the car and need to have it towed to a dealer. I do have SDD and a genuine Mongoose cable to do the programming.
Last edited by Jagboi64; Dec 1, 2025 at 06:39 PM.
About the transponder: The transponder in the key is a pill or chip located in the front part of the "button-thingy" attached to the Tibbe-blade.
The remote functions are located in the rear part of the "button-thingy". That remote is easy DIY programming on the X-Type, even if you had no key at all to start with.
If you had (what you don't have) 2 OE keys, you could easily DIY program the transponder of a 3rd and forth key.
But as you have only one key (and that is not even an OE), you can't to that yourself.
SDD and Mongoose cable may be a way.
But I'd say, your "easiest" way to proceed (if you do not have SDD and Mongoose cable already) is to go to a capable locksmith and have your transponder pill or chip CLONED!
It is likely that the oval shaped pill in your new key is not programmable - at least not with the equipment the locksmith has, but that's not to worry, he will give you a new little chip (where he cloned the info of you old transponder pill into) and you just throw out the pill in the new key and put the new little chip in there instead.
The remote functions are located in the rear part of the "button-thingy". That remote is easy DIY programming on the X-Type, even if you had no key at all to start with.
If you had (what you don't have) 2 OE keys, you could easily DIY program the transponder of a 3rd and forth key.
But as you have only one key (and that is not even an OE), you can't to that yourself.
SDD and Mongoose cable may be a way.
But I'd say, your "easiest" way to proceed (if you do not have SDD and Mongoose cable already) is to go to a capable locksmith and have your transponder pill or chip CLONED!
It is likely that the oval shaped pill in your new key is not programmable - at least not with the equipment the locksmith has, but that's not to worry, he will give you a new little chip (where he cloned the info of you old transponder pill into) and you just throw out the pill in the new key and put the new little chip in there instead.
The "I have two keys and can configure a third" only applies to the X-Type, S-Type and X350 'New XJ' style cars.
Earlier cars need PDU, WDS, IDS configuration.
I know nothing about SDD but if you can default to Legacy IDS, find the SETUP AND CONFIGURATION tab and go to SECURITY tab to click on PROGRAM NEW TRANSPONDERS.
Follow the prompts and erase (clear) all previous transponders and configure all the new ones.
Enter the number of keys present and just put each one in the ignition ON/OFF one at a time.
ALL KEYS NOT PRESENT WILL BE DELETED.
An EX-GIRLFRIEND with keys (or lost ones) will NOT START THE CAR.
Earlier cars need PDU, WDS, IDS configuration.
I know nothing about SDD but if you can default to Legacy IDS, find the SETUP AND CONFIGURATION tab and go to SECURITY tab to click on PROGRAM NEW TRANSPONDERS.
Follow the prompts and erase (clear) all previous transponders and configure all the new ones.
Enter the number of keys present and just put each one in the ignition ON/OFF one at a time.
ALL KEYS NOT PRESENT WILL BE DELETED.
An EX-GIRLFRIEND with keys (or lost ones) will NOT START THE CAR.
> The "I have two keys and can configure a third" only applies to the X-Type, S-Type and X350 'New XJ' style cars.
Agreed. I assumed the question was about X-Type.
> An EX-GIRLFRIEND with keys (or lost ones) will NOT START THE CAR.
Lost keys or lost girlfriends?
I guess, it's true for both...
Agreed. I assumed the question was about X-Type.
> An EX-GIRLFRIEND with keys (or lost ones) will NOT START THE CAR.
Lost keys or lost girlfriends?

I guess, it's true for both...
many moons ago i had (from what i remember) a new key and fob, cut and programmed at a local locksmith (no longer local)
for sure i only had 1 key but cannot remember the reason or circumstances for having it cut.
i just remember it was done by a regular lockstore in a rural town and i doubt there was "software" involved.
i also seem to remember talking about it on this forum in detail at the time (likely10+years ago)
for sure i only had 1 key but cannot remember the reason or circumstances for having it cut.
i just remember it was done by a regular lockstore in a rural town and i doubt there was "software" involved.
i also seem to remember talking about it on this forum in detail at the time (likely10+years ago)
Last edited by iownme; Dec 2, 2025 at 05:00 PM.
The TWO KEY is a 'Ford-thing' and since the car is sort of a MONDEO it will work. You insert first key and turn ON/OFF, insert second key, turn ON/OFF, then insert the key NOT CONFIGURED, turn key ON/OFF.
It should now be configured to the car.
It should now be configured to the car.
I found what post I was thinking of, it was on the UK forum.: https://www.jaguarforum.com/threads/...=1#post-673807
I think the difference I was thinking of in the SDD options was "Add additional transponder" - which requires 2 working keys already, and "Program new transponder" which deletes the old transponders and adds the new keys.
I think the difference I was thinking of in the SDD options was "Add additional transponder" - which requires 2 working keys already, and "Program new transponder" which deletes the old transponders and adds the new keys.
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Then I moved on to Programming Transmitters, again have both fobs available and it asks how many are to be programmed. I selected 2, then follow the prompts. Now I have 2 working keys and 2 working remotes.
As a general note, when doing this make sure the car battery indicator in SDD is showing green. I have an old style RV battery charger that I connected to ensure there is sufficient voltage for the session. I have a Canadian car, so the DRL's are on when the ignition is on and that is greater drain on the battery. It's essential to have an auxiliary power supply connected.
While I was at it, I turned off the drip wipe function, that always annoyed me.
Last edited by Jagboi64; Dec 3, 2025 at 01:28 PM.
"While I was at it, I turned off the drip wipe function, that always annoyed me."
ok now you have my attention.....
what equipment or programs do i need to buy to be able to do this.
please advise.... one of my few pet peeves!!!
ok now you have my attention.....
what equipment or programs do i need to buy to be able to do this.
please advise.... one of my few pet peeves!!!
The expensive part is you need a Mongoose cable to communicate between the car and computer. It has an OBDII connector on one end and USB on the other. The original is made by Drew Technologies and is expensive. When I bought mine back in 2012 it was about $600. Apparently there are Chinese clones that work with varying degrees of success. I didn't want a knockoff cable to corrupt the data while I was writing to the security module.
This is an old thread, but all you need to know about SDD and using it: https://www.jaguarforums.com/forum/g...d-truth-32683/
There is lots on the general tech help forum about SDD and it's variants.
On the box, my Mongoose says it is part number 15592. There are specific versions for different OEM makers, this was a JLR cable.
Last edited by Jagboi64; Dec 4, 2025 at 11:56 AM.
DO THIS T0 BYPASS TRANSPONDER -PILL CHIP. These Jaguars are so old nobody wants to steal them. Remove the transponder pill or chip from the original key. Epoxy glue or type of glue that glues pill chip to the key barrel. You now can use any cut keys to code. Pill chip uses proximity sensing, when you instert key, the front tap of key barrel opens and turns on the proximity sensor. If you afraid of damage original key, tape the orginal key to key barrel and behind the front dash pad. Good luck.
Last edited by annamiata; Dec 8, 2025 at 08:52 PM.
The "I have two keys and can configure a third" only applies to the X-Type, S-Type and X350 'New XJ' style cars.
Earlier cars need PDU, WDS, IDS configuration.
I know nothing about SDD but if you can default to Legacy IDS, find the SETUP AND CONFIGURATION tab and go to SECURITY tab to click on PROGRAM NEW TRANSPONDERS.
Follow the prompts and erase (clear) all previous transponders and configure all the new ones.
Enter the number of keys present and just put each one in the ignition ON/OFF one at a time.
ALL KEYS NOT PRESENT WILL BE DELETED.
An EX-GIRLFRIEND with keys (or lost ones) will NOT START THE CAR.
Earlier cars need PDU, WDS, IDS configuration.
I know nothing about SDD but if you can default to Legacy IDS, find the SETUP AND CONFIGURATION tab and go to SECURITY tab to click on PROGRAM NEW TRANSPONDERS.
Follow the prompts and erase (clear) all previous transponders and configure all the new ones.
Enter the number of keys present and just put each one in the ignition ON/OFF one at a time.
ALL KEYS NOT PRESENT WILL BE DELETED.
An EX-GIRLFRIEND with keys (or lost ones) will NOT START THE CAR.
Last edited by scottjh9; Dec 9, 2025 at 10:15 PM.
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