XK8 / XKR ( X100 ) 1996 - 2006

Low Current on Cigarette Lighter

Old Dec 24, 2021 | 08:16 AM
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Default Low Current on Cigarette Lighter

I’ve tried using the Cig lighter as a 12V outlet for a phone charger, or air compressor and have had no luck getting it to work.

Some current does reach it as it does at least turn on the led on the phone charger adaptor, but not enough to actually charge the phone or turn on the tire compressor.

Of lesser importance but related, the socket also fails to heat up the heater element in the cigarette lighter.

Electrical troubleshooting is not my strong suit, but I have a multimeter I can figure out how to use. Any clues on where to begin troubleshooting would be appreciated.

Also, does anybody know where the fuse for the 12V outlet is located?
 
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Old Dec 24, 2021 | 08:46 AM
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Originally Posted by giandanielxk8
Also, does anybody know where the fuse for the 12V outlet is located?
F14 (20A) - passenger side fascia fusebox.
If you're getting some power through, the fuse is likely OK. The sockets can be temperamental as they're not the finest quality in the world
 
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Old Dec 24, 2021 | 09:35 AM
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Originally Posted by michaelh
F14 (20A) - passenger side fascia fusebox.
If you're getting some power through, the fuse is likely OK. The sockets can be temperamental as they're not the finest quality in the world
In which case, replace the socket? Or can the socket be fixed?
 
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Old Dec 24, 2021 | 09:49 AM
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It's usually poor contact with the centre pin on whatever you plug in, in my experience. That presses on the rivet holding the clip/+ve connector at the bottom. They quite often go rusty if the lighter has been used much. It's a bit buried to get to clean - perhaps one of those little burr wheels in a dremel?

I think the console has to come out to replace the lighter.

I have the same problem with one of the cars where I use a little plug-in FM transmitter to play USB sticks. Keep having to wiggle or twist it when it goes off

One day I'll have a go at fixing it.
 
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Old Dec 24, 2021 | 11:12 AM
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Giandaniel,

The fact that you get an LED illumination says fuse us ok, you're getting 12volts. Low current points straight to corrosion.

Sometimes the simplest fixes are the best. A few years ago I was going overboard trying to improve the sound as an audiophile. Don't laugh but I was actually polishing the pins on the vacuum tubes . . . Well that was until I had the pleasure of meeting Bas on line. He's the owner of Balanced Audio Technology and had worked on everything to do with tubes back in Russia before he moved to USA. I mentioned this to him, he just replied: plugging unplugging repeat is the best way he's ever found to clean the pins!

Apply this logic to your lighter receptacle. It'll work great for the cylinder, but I'd probably pull the fuse, grab some fine grain sandpaper wrap it around a dowel or a big screwdriver stick it in and polish the 12volt nub for better contact.

Hope it helps. Hey, fun fact that gentleman shared once: the MIG fighter jets actually use (used?) Vacuum tubes! Which aren't affected by an EMP pulse from a nuclear blast like a transistor is!

John
 
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Old Dec 26, 2021 | 07:37 AM
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Default Checking underneath

GD,

If cleaning the centre nub, from the top, doesn't work, you may need to check connections underneath. The cigarette/ashtray compartment is a complete unit bolted onto the centre console.



It's been a while since I removed the centre console of my ex-XK8, but as Rev Sam showed it's a simple job to remove it. then you got access to the cigarette lighter. I actually had to replace it, using the cigarette lighter from my scrap donor car and I remember it was a b@#tard! to get out due to the push green lit ring. I had to enlarge the hole in the end to get the replacement in/out. From my bucket of stuff, I found these 12V cigarette lights come in different lengths, and of course Jag uses a hard to find short one. As it heats up (obbviously), make sure none of the carpet is tucked underneath it (fire hazard).
 
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Old Dec 27, 2021 | 11:47 AM
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Originally Posted by DavidYau
The cigarette/ashtray compartment is a complete unit bolted onto the centre console.



.
I neeeeever knew!
Good stuff...

Yup. Clean stuff up. A hot chocolate spilled in there in 2007!
 
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Old Dec 27, 2021 | 05:41 PM
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Thanks for all the suggestions. Hopefully I can look into this tomorrow. I had my day busy changing the starter on my grandfather’s Outlander.
 
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Old Dec 28, 2021 | 01:26 PM
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Default Problem solved

After scraping the ever living hell out of that socket, I decided to check the fuse. To my surprise, what was in there was just the weirdest looking 20 amp fuse which happened to be blown.

I replaced it with a proper 20 amp spare fuse and tried my air compressor and it worked. My iPhone charger is also working properly.
 
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Old Dec 28, 2021 | 02:08 PM
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Nice job Doc!!!

John
 
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Old Dec 28, 2021 | 06:10 PM
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Dr. Glan,

Now, where did that Weird looking 20 AMP fuse come from?

Billy Clyde
 
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Old Dec 28, 2021 | 11:28 PM
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Originally Posted by bcprice36
Dr. Glan,

Now, where did that Weird looking 20 AMP fuse come from?

Billy Clyde

My guess it was the P.O. It was labeled “Smart Glow”.


 
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Old Dec 29, 2021 | 07:52 AM
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Smart Glow "makes it a little easier to diagnose electrical problems".

hehe - some of them, perhaps. Explains the odd continuity:

 
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Old Dec 29, 2021 | 09:21 AM
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I suspected this, but the LED definitely wasn’t working anymore.
 
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Old Dec 29, 2021 | 11:00 AM
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I know this was the previous owner's fuse, but a word of advice: Only use standard brand name (Bussmann or Littelfuse) automotive fuses. Fuses that are gimmicky or imported from China like Harbor Freight fuses are asking for trouble.
 
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Old Dec 29, 2021 | 02:05 PM
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Thanks for all the info in this posting. Saved me a ton of troubleshooting.
 
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Old Dec 30, 2021 | 11:47 AM
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Hey Dr. Glan,

Nice Manicure!

Billy Clyde @ Cinco Ranch
 
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Old Dec 30, 2021 | 06:17 PM
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Originally Posted by bcprice36
Hey Dr. Glan,

Nice Manicure!

Billy Clyde @ Cinco Ranch
Haha, I let one of my hot dates give me a manicure the other day. Turned out to be a much more relaxing experience than I expected.
 
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Old Jan 1, 2022 | 09:09 AM
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Originally Posted by giandanielxk8
Haha, I let one of my hot dates give me a manicure the other day. Turned out to be a much more relaxing experience than I expected.
do tell, what else relaxing did you let her do ?

ok, maybe off topic, but a more interesting direction than “low current @ cigarette lighter” on a cold New Year’s Day.

Z


 
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Old Jan 1, 2022 | 12:18 PM
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Originally Posted by zray
do tell, what else relaxing did you let her do ?

ok, maybe off topic, but a more interesting direction than “low current @ cigarette lighter” on a cold New Year’s Day.

Z
Hahaha, if I were to discuss that this thread would need a NSFW tag.
 
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