I have an 04 S-type 4.2 with OEM equipped HID's. Im not sure when, but the drivers side headlight when out? I took the bumper off & removed the headlight. I replaced the hid bulb with a new one started the car back up and nothing. I have an extra set of headlights so I switched the ballast thinking it had gone bad, started the car back and still nothing. I then take the other headlight off & removed the ignitor (that black thing that screws onto the bulb) and I stalled it on the left side restart the car & headlight still doesnt fire up.

I pull the owners manual out & look for the section on headlight fuses. By now its starting to get dark so I do a half @ss job with the fuse search, but Im thinking if a fuse went out would it affect both headlights?

Anyway, if anyone could shed some light, pun intended, I would be eternally gratefull. Thanks for your time...

 

I should add that all other lights within the headlight work, ie turn signal & hi beams...etc

 

Update, I just confirmed that its a relay or a fuse issue? I used a team fused bulb checker to check the hid main light for any juice & my fuse checker didnt come on. I double checked the right side to make sure that I was checking the right wire & the light came on, so Im tapping into the right wire.

 

I know this post was from ages ago but did you ever resolve the problem? I have the same issue right now but I didn't try changing the adaptor/connectors on the back of the bulb. I did check the engine compartment fuse and it looked good. I looked in the luggage compartment in the trunk and I'm currently looking where to get a replacement micro 20A fuse for position R10. It's this large square yellow thing.

 

The OP, momo, has not posted anything since December 2017, so I would not hold my breath on a response...

 

I'd check fuses (and if there is a dedicated relay for the frt. light, that one, too, of course).
I think left and right head-lights have separate fuses, which seems to have caused confusion in 2011 (threads above)

 

Is this related to the headlight issue, or something else?

Wiring diagrams are here, at the top of the page:

JagRepair.com - Jaguar Repair Information Resource

Do you have regular or HID headlights? The wiring is different, so want to be sure.

I'm a bit confused by your nomenclature, or perhaps just the location is wrong. R10 would be a relay, not a fuse. R10 in the front power distribution panel (under the hood) is the relay for the left HID headlamp. However, you mentioned dealing with this "fuse" in the trunk, so I'm thoroughly confused.

At the link above, see figure 08.2 for HID wiring.

Can you please post a picture of your mystery "large square yellow thing" and its location? We'd be glad to help but I want to make sure we are heading on the right path.

 

1) Yes this is R10 from the engine compartment. I was mistaken in my prior post. I have not checked this - now that I know this is a relay and not a fuse I have found the part online and will try replacing it.
2) "Large square yellow thing" was me mistaking relay R10 in the luggage compartment for relay R10 in the engine compartment.
3) I have Sylvania D2S HID Xenon Bulbs. I have used these for the past 4 years and have had no problems. I bought the exact same ones this round and both of them work in the right head light. Once the headlight bulbs are clipped in place, there is an adaptor piece that screws onto the back. I've done this change once before several years ago so I am familiar with lining up the contacts. Once the adaptor was screwed onto the back of the lightbulb, I made sure that the adaptor piece itself was plugged in to the power supply.
4) F34 fuse is intact.
5) Turn signals work. Forgot to test the high beams.
6) I now have an informative video on how to remove the front bumper and change the low beam headlight. I plan on uploading this to youtube later.


R10 Relay from engine compartment. I realized I misunderstood the manual and thought this was R10 in the luggage/trunk fuse box.

F34 - left hand dipped beam

 

Yes, that is definitely a relay. While waiting for the new one to arrive, try swapping in another known-good relay for troubleshooting. Make sure the front fog lamps work properly, and then R11 (under the hood) would be a good donor.

 

- R10 and R11 swapped places. Result: fog lights still work and the left headlight (low-beam dipped) is still off.
- Next step is to remove the headlights again and change some wiring?

 

Did you ever figure out the issue? The driver side HID won't come on for me. I am willing to tap a wire from left to right if that will work.. Only the HID doesn't work everything else does. I replaced ballast and all (does it use an igniter?)

Surely more people have experienced this. Could it be the wiring inside the headlight assembly?

 

Hey Mhooper1125, I have not figured it out yet. It's probably something super simple but learning that repair process is what takes times.

 

Do you have power at the plug? Swap the headlights from side to side? Do they work now?
.
.
.

 

Hi guys, it turned out that I just need to replace the ballast. The ballast is this rectangle like box, about the size of cellphone, that is attached to the back of the headlight assembly. To access this you will need to remove the front bumper and take out the headlight assembly. See the 5 second mark on the video attached below to see where the ballast is. I fixed this a few months ago and wanted to post the update for everyone. The ballast was maybe $100 dollars on rockauto?

Overall diagnostics:
- Swapped headlights. Bulb definitely worked.
- Swapped relays. No change, as it wasn't the relays.
- Checked fuses. No issues.
- Contemplated replacing the power supply cable (the thing that screws directly onto the back of the bulb). Fortunately this wasn't the problem.
- Contemplated learning the electric maps and using a volt meter to check if one of the wires was bad. Fortunately this wasn't the problem.
- Swapped ballast and the headlight came back on.
- Thank you everyone for posting on this forum and helping me figure this out!

Once the headlight assembly is removed, about 3 screws need to be removed to take off the ballast. The replacement part fits in with little to no effort. I think I ended up replacing the ballast on the other headlight as well. Attached below is a link to a youtube video detailing my toil on the headlight. At the 5 second mark you can see this rectangular box which is ballast. For clarity it is the device in the video with two stickers one of which says "147" on it. You could probably remove the ballast without taking off the front bumper but I think you would need a special tool to access one of the screws that is keeping it secured. The original quote to replace the light bulbs was about $650 not including the actual bulbs themselves. Of course I did not accept that quote. This repair can be done, by someone who knows what they are doing, in about 30-60 minutes with the ballast costing around $100 dollars. For more information I recommend www.alldatadiy.com as this website provides an anatomy of your car with descriptions on diagnostics and repairs. Part catalogs are also available so that you get the right equipment the first time. It is a helpful supplement to the jaguar forums and is worth the subscription. Thanks again everyone!

 

Good repair and good troubleshooting. Nice to see you close the thread with what worked.
The front bumper is very easy to remove but so many just won't do it. The first time you do it is amazing how much room you have to work on things!
.
.
.

 

May not be true in places plagued by rust and when the car has headlight washers.

 

You can check the video on my last post and it shows how to remove the bumper.

Things to consider
- Need a 10mm socket wrench head. Get the actual wrench, an extender and a magnetic pick up tool. Hardest 2 bolts to remove at the ones you have to reach at the front wheel wells. If you have a big hand it will be hard to remove. Overall it is about 24 bolts you have to remove to finally get the headlight assembly and bumper free.
- Headlight washers are easy to remove. The mishap comes with reattaching them. Test them before driving away by washing your windows (button near turn signal) - otherwise if they are not securely attached, they will fall off while driving (happened to my left side and now I'm trying to find a replacement).
- Ideally you should be able to get under the car and remove the splash guard to free it from the bumper. I didn't have this knowledge or expertise so I used cardboard to support the bumper. I essentially removed all the bolts and then moved the bumper forward 1-2 inches so I could get the headlight bolts and continue with the work. If you don't support the bumper correctly, you could damage the splash guard.