Hi Guys,

I’ve been lurking on this forum for many years now and owe a big thank you to the community for helping me keep my x-type rolling on the road.

I recently came back from a few months abroad and found something nesting in my engine bay. The drivers side- HID- headlight does not work.

I found that the f29 fuse is blown, and blows the one when replaced.

does anyone know what might be causing this?

Thank you

 

NEW CLUE!

When I turn the switch to ‘auto’ the dash lights and night time lights (side markers/ taillights) turn off. If I turn the switch to the normal ‘on’ position they all work fine (except driver side headlight)

 

Hi TysonP,
It is likely your uninvited guest has partaken of some light refreshments while enjoying his stay.......

Assuming the F29 fuse is 20A size (for HID variant vehicles) you should probably start by doing a earth leakage check with a digital multimeter.
With F29 out of circuit and while the left headlight connector remains connected (so you are not disturbing wiring for the moment), measure resistance from the F29 holder contact (load side not the 12v supply side) to ground. If it is reading very low (just a few ohms, then you either have a short in the wiring or the HID module is faulty). Take Fuse 30 out and do a comparison resistance check to ground. If F29 to ground measures noticeably lower, undo the connector to the left headlight assembly and repeat your measurement at F29. If the resistance stays low, you have a wiring loom short ......chewed insulation likely allowing one or more wires to crossover.
If resistance has gone way up into the Meg Ohms or open circuit, then that potentially exonerates the wiring from having a short for the time being.
You are then turning your attention to investigating the HID module in the left headlight, measuring between JB84-5 and JB84-8. You can compare that resistance measurement to what you are getting on the right headlight on JB85-5 and JB85-8.

As for your quick update......If you still have enough daylight there at the moment, then the Auto position will shut off your lights as the day sensor would be deeming the lights unnecessary to turn on until dusk or night time.

 

Thanks h2o2steam

So you don’t think it’s the switch?

In regards to the auto position issue, it does this when it’s completely dark. But I guess that could be a light sensor issue, correct?

I’m not very experienced with electrical issues so I’ll have to get a digital miltimeter- and hope it helps explain the JB85-5 and JB85-8 you mentioned.

 

The JB84 and JB85 references are the headlight plug connector references in the schematic.
I think you may have two separate issues; circuit failure to LHS Dip beam, plus a likely wiring break or Auto light sensor failure. My money is on some chewed wires.
Here is a excerpt from the schematic with some highlights I have added to help explain.

 

Wow,.. thank you so much h2o2steam for going through the trouble with the schematics. It does help see what I need to trace.