XJ XJ6 / XJ8 / XJR ( X350 & X358 ) 2003 - 2009

headlight troubleshooting

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Old Oct 31, 2020 | 01:05 PM
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Default headlight troubleshooting

Okay. So - I purchased this car recently and the passenger side headlight was full of rusty water. The high beam lit though. The driver's side unit lit fine, bit was extremely hazy, so I replaced it also.

I found replacement headlights on ebay. The new one for the driver's side is fine, but the passenger side low beam still won't light. I've tried the old driver's side unit on the passenger side (had to turn the connector upside down, bit it fit fine), and it still doesn't light the low beam.

The question is this: what's left to replace? I was concerned the connector had rust issues, but I've spent a decent amount of time cleaning it and I suspect it's okay.
 
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Old Oct 31, 2020 | 11:39 PM
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I've been thinking about this. An electrical component plus water = a blown fuse. That's what I'm checking first thing in the morning.
 
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Old Nov 1, 2020 | 12:57 PM
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That was it. New fuse. All lit.

Whew!
 
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Old Nov 1, 2020 | 01:40 PM
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Thanks for posting the result. My suggestion would have been a relay at that lamp.
 
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Old Nov 1, 2020 | 01:44 PM
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It'd appears I'm not quite out of the woods.
Now the headlights won't go off!

Sigh.

Edit: it's the high beams that aren't going off.
 

Last edited by yellowbandit; Nov 1, 2020 at 02:18 PM.
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Old Nov 2, 2020 | 07:27 AM
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Both or just the passengers side ?
Do the brights go out with the switch when running ?
 

Last edited by Wingrider; Nov 2, 2020 at 07:29 AM.
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Old Nov 2, 2020 | 09:57 AM
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High beams are always on for both sides. Whether the car is running, or not running with the key removed. I ended up pulling the headlights back out for fear of draining the battery.

I was going to purchase a replacement stalk on ebay, but I'm thinking it could also be a bad relay somewhere?

What do you think, Wingrider?
 
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Old Nov 2, 2020 | 01:09 PM
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Water and electricity are a bad mix.
Try tracing the wires, from connection to connection.
Check for voltage & for burnt connectors
The wiring diagrams are available on site for free.
 
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Old Nov 10, 2020 | 09:09 AM
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No Need to replace if the lights are fogged or hazed.



 
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Old Nov 10, 2020 | 01:27 PM
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Looks great, nice work!!!
 
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