XK / XKR ( X150 ) 2006 - 2014

upgrading to new shape key fob

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Old Aug 23, 2019 | 03:41 AM
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Default upgrading to new shape key fob

Any one done this ?

 

Last edited by George05; Aug 23, 2019 at 06:33 AM. Reason: photos
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Old Aug 23, 2019 | 07:20 AM
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Had bought a cheap key fob (new shape) from ebay . Just to see if i could transfer the circuit board and other bits from my spare old style XK key fob , Into the new shape fob . I have been using a very hot knife to melt and trim bits away from inside the newer shape fob to see if i could fit mine in , it more or less will fit in but now have 2 sides of the circuit board to trim off with a tool from the widest end of circuit board . It could fit




 
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Old Aug 23, 2019 | 07:33 AM
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I guess I'm missing the point here. Maybe if I see the final product I'll get what you are trying to do. Compared to my Lexus FOB I find the Jag one to be much lighter and easier in the pocket.
 
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Old Aug 23, 2019 | 10:20 AM
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Ok, so then what happens when you're out somewhere and the "INSERT KEY INTO SLOT" or whatever thing shows up cuz Dead Battery or something? New one won't fit into the emergency slot.
 
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Old Aug 23, 2019 | 05:02 PM
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I like the look of the new key compared to the old flimsy current one . i read some one done it using the old heavy key fob from the x351 xj . But will try this out . (might not be able to but hey ho ) in the new shape fob they have a shorter key inside the fob . xj, xf,xe ftype etc all have same fob now LR to . would just get the blank key cut . got bits to trim yet and could ruin the spare fob worse case , But give it a go
 
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Old Aug 23, 2019 | 05:44 PM
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If you want the new style Smartkey, do what I did.

 
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Old Aug 23, 2019 | 05:57 PM
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Originally Posted by Stuart S
If you want the new style Smartkey, do what I did.

OK I give what do the different key FOB's look like.
 
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Old Aug 23, 2019 | 07:17 PM
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Originally Posted by Stuart S
If you want the new style Smartkey, do what I did.

Hi was it yourself who done the x351 fob ?
 
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Old Aug 23, 2019 | 08:18 PM
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Originally Posted by George05
Hi was it yourself who done the x351 fob ?
Mine came with the XJ.
 
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Old Aug 23, 2019 | 08:21 PM
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Originally Posted by jagtoes
OK I give what do the different key FOB's look like.
See the OP's Post #1. The XK fob is on the top, XJ fob on the bottom.
 
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Old Aug 24, 2019 | 02:16 AM
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Originally Posted by Stuart S
Mine came with the XJ.
ok i understand
 
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Old Aug 24, 2019 | 02:28 AM
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Originally Posted by Cee Jay
Ok, so then what happens when you're out somewhere and the "INSERT KEY INTO SLOT" or whatever thing shows up cuz Dead Battery or something? New one won't fit into the emergency slot.
I have had the same idea. i don't know why change fob.
 
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Old Aug 24, 2019 | 11:40 AM
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Originally Posted by Sovejag13190
I have had the same idea. i don't know why change fob.
I just like the look of the new fob . simple
 
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Old Aug 26, 2019 | 08:50 AM
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Originally Posted by Cee Jay
Ok, so then what happens when you're out somewhere and the "INSERT KEY INTO SLOT" or whatever thing shows up cuz Dead Battery or something? New one won't fit into the emergency slot.
This^^^
 
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Old Aug 26, 2019 | 04:54 PM
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Have decided to leave doing this mod. The next step involves trimming the circuit board to make it fit inside the new fob and i simply do not want to waste my spare key fob . Would cost me over a £100 to replace so Wont.
 
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Old Aug 26, 2019 | 07:08 PM
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Put the money you just saved towards a used XJ and you'll have the key of your dreams!
 
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Old Aug 30, 2019 | 02:03 AM
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This is a good idea because the old fobs turn into trash too quickly.

For testing purposes, how about getting a spare fob? It can be tested if it still transmitting signal before and after the PCB is cut without having it be programmed to any given car. Wondering if the buttons line up and be as responsive when pressed.
 
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Old Aug 30, 2019 | 03:24 AM
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Originally Posted by Stuart S
Put the money you just saved towards a used XJ and you'll have the key of your dreams!
No xj well not the Infamous x351 version . littered with faults would rather buy the s class merc
 
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Old Aug 30, 2019 | 09:39 AM
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My XJ and your XKR share the same 5.0L SC engine, which is known for defective water pumps. Other than that, my 2013 XJ has not been "littered with faults" as you claim. If you want a brand that is littered with faults with frequent and expensive repairs, look no further than any out-of-warranty MBZ, and particularly the S-Class.

https://www.bbb.org/us/nj/montvale/p...813/complaints

2015 Mercedes-Benz S550 | CarComplaints.com

https://www.consumeraffairs.com/auto.../mercedes.html
 
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Old Aug 30, 2019 | 01:04 PM
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Originally Posted by litteredwithfaults
This is a good idea because the old fobs turn into trash too quickly.

For testing purposes, how about getting a spare fob? It can be tested if it still transmitting signal before and after the PCB is cut without having it be programmed to any given car. Wondering if the buttons line up and be as responsive when pressed.
Sorry, don't want to dis you or the OP but this is anything but a good idea. It's been mentioned more than once and if you own an XK long enough, the car WILL tell you at some point to insert the smart key into the starter control unit. Mods are fine but this one, not so much.
 
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