XK / XKR ( X150 ) 2006 - 2014

2007 XKR No ignition response at all

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Old May 4, 2024 | 04:01 PM
  #101  
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From: Kent
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Hi did you manage to resolve this as I am having the exact same problems?
 
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Old May 4, 2024 | 05:10 PM
  #102  
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After using SDD, sometimes your car may give the illusion of a bricked model or no ignition, but the fix is easy,
just unhook battery for a few minutes and all resets.
 
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Old May 5, 2024 | 03:13 AM
  #103  
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From: Kent
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Originally Posted by trkyam
After using SDD, sometimes your car may give the illusion of a bricked model or no ignition, but the fix is easy,
just unhook battery for a few minutes and all resets.
I wish it was that simple. All that happens after unhooking the battery and reconnecting is the wipers start going even though they should be switched off and rear lights coming on.
The battery is good it was changed when I got the car a few months ago and I have even tried a booster pack which made no difference.
The car is behaving exactly as the op described even the screen shots posted are the same. Will try and upload some pics I took in sdd.




 
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Old May 5, 2024 | 03:26 AM
  #104  
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Disconnect all unnecessary modules and use fiber optic loops
 
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Old May 5, 2024 | 09:43 AM
  #105  
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From: Mechanicsville, Virginia, USA
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Originally Posted by Mattk76
Hi did you manage to resolve this as I am having the exact same problems?
Hello Mattk76,
Please consider taking the time to describe your own problem and steps that you have taken to diagnose with sufficient detail that the good folks on this forum may provide a thoughtful response.
A shot in the dark? Try an intermittent failure in the Front Smart Junction Box (FSJB) located on the lower left side. That was my experience.
Should anyone happen to require a FSJB replacement, be advised that the part number letter suffix is important as there are functional differences between 2007-09, 2010-11 and 2012-15.
PS: If you haven't confirmed actual battery voltage with a reliable voltmeter, you have failed the very first step of diagnosis.

Keep us posted.
 
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Old Aug 22, 2025 | 11:34 PM
  #106  
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I finally get my XKR back today after two years finding parts. Both BCM's had to be replaced and reprogrammed.
 
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Old Aug 23, 2025 | 02:23 AM
  #107  
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From: Kent
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Hi thanks for replying glad you got it sorted eventually. I sorted mine by buying second hand bcm's the front one I had cloned but the rear was corrupted as well. So I got a used one of eBay and flashed it myself with sdd and got my car back.
 
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Old Aug 23, 2025 | 06:30 AM
  #108  
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There is only one Body control module.
There is a battery monitoring chip on the negative ground
but it is merely monitoring voltage so the alternator knows
when to energize or not.
 
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