XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

Bulb Warning Light Won't Go Out!

 
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Old 05-06-2019, 01:30 PM
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Default Bulb Warning Light Won't Go Out!

Hi Guys

The Bulb Warning Light on 50 Shades my Grey XJS will not go out, even though everything was ok before I got her packed away in the Garage for the Winter

Checked all the Lights, everything is OK except for this little Electrical Gremlin

Any Ideas?



Bulb Warning Light won't go out
 
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Old 05-06-2019, 01:52 PM
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Mine does the same thing sometimes, Pull up on the emergency brake lever, when you think it is all the way up jerk on it some more, then push the button and force it down quick as you can. The reason I said to get aggressive with it, I did normal a few times and did not work, got pissed pulled it up fast and hard and pushed back down fast and hard and light goes out.
If light is on and I do it normal light will not go out. It works for me.
 

Last edited by macdoesit; 05-06-2019 at 01:58 PM.
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  #3  
Old 05-06-2019, 02:21 PM
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Hi Mac

Cheers!

I will give that a try Tomorrow and let you know what happens
 
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Old 05-06-2019, 02:48 PM
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Did you replace any of your lights with LED?
 
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Old 05-07-2019, 01:24 AM
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Originally Posted by orangeblossom View Post
Hi Mac

Cheers!

I will give that a try Tomorrow and let you know what happens
The bulb failure light can only be triggered by the handbrake lever if you have your foot on the brake as well. This is a test mode for the BFL. The BF module is a bimetal strip and they do get weaker/jam etc etc. or a poor connector in the light itself can do it, as not enough current flows to heat the bimetal. Drive it for a bit and see if it goes out, after that, post again...
Greg
 
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Old 05-07-2019, 03:56 PM
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There are 5 bulb failure units.2 on the component panel next to the aux fuse panel, 2 in the boot on each side and the brake light failure unit under the centre console.

You can diagnose it to a single unit by removing the WS wire one at a time and see if the warning light goes out. The brake light failure unit under the console is the WL wire.

If the cruise control works then the brake switches are ok.
 
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Old 05-07-2019, 05:27 PM
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[email protected]@[email protected] (Thank You For all those suggestions Guys)

Hi [email protected]

Well done Guys and Thanks to you both I've finally tracked the Fault down to a blown Festoon Bulb in One of the Number Plate Lights

New Bulb in and Fault Light Out!
 
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Old 05-07-2019, 06:09 PM
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Damn the bulb failure unit actually works
 
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