I have had a problem with the amber adaptive headlight warning flashing on my dashboard. I had a garage go through testing the system according to the Topix instructions (all the wiring etc), and the end result was the following three fault codes: B1D6587, B108783, and B1D64. Unfortunately I did not take a note if what they stand for, although I think B1D6587 is to do with the swivel motor.

The fault finding conclusion on Topix is that both headlights need to be replaced, but a couple of other garages I spoke to are skeptical about that.

Has anyone else experienced this? Anything else I should check before splashing out on headlights?

Thanks

 

B1087-83 is LIN Bus "A" - Value of signal protection calculation incorrect
Possible causes: Checksum error
Action: Clear the DTC and re-test. If the DTC remains install a new Headlamp Control Module.

B1D64 has a couple of sub codes:
B1D64-01 is Left Headlamp Swivelling Motor - General electrical failure.
Possible Causes: General electrical failure - Left headlamp swivelling motor error.
Action: Check the headlamp connections, clear the DTC and re-test. If the DTC remains install a new headlamp

B1D64-04 is Left Headlamp Swivelling Motor - System internal failures.
Possible Causes: System internal failures - Left headlamp swivelling motor error
Action: Check the headlamp connections, clear the DTC, switch off the ignition and allow sufficient time for the module to power down and re-test. If the DTC persists, install a new headlamp

B1D64-87 is Left Headlamp Swivelling Motor - Missing message.
Possible Causes: Missing message.
Action: Check the headlamp connections. Check power and ground supplies to headlamps AFS modules. Clear DTC and re-test. If DTC remains install a new headlamp.

B1D65 has the same sub codes as B1D64 above, but is for the right swivelling motor instead of the left.

In the presence of both B1D64/65 codes I would first suspect a common cause rather than two independently faulty headlamps. There is a single headlamp control module in the passenger footwell (UK car). It doesn't have a fused supply as it is switched on directly by the central junction box/fuse box behind the rear seats using its main battery supply, however the motors themselves are fused with F23 5A in that same fuse box. When I was testing out the options for retrofitting the LED headlamps to my 2010 I managed to blow that fuse. Also check F49 and F50 (both 5A) as well. They are clearly numbered, but you do need to remove the rear seat cushion, back and cut open the soundproof lining behind it where it is perforated in the middle to access the fuse box.

Failing the fuses I'd check the wiring between the module and the lamps then look at replacing the module before the lamps themselves. The LIN bus used for controlling the AFS motors is spliced between both lamps so with B1087-83 being stored as well the common module might be shot, but it may be the checksum error is simply because one or both of the motors is not responding because the power supply is off.

 

That's very helpful.

I checked these fuses, which gave me another opportunity to wonder if Jaguar could have chosen a more inconvenient location. I decided it was time for a modification involving the use of a Stanley knife to be followed by some glue or Velcro to allow quicker access to these fuses. In any case, I checked these three fuses and all are fine.

The garage did tell me that when they went to the headlamp control module it was disconnected, so someone had been investigating this before I had the car. There were 11 fault codes at first, but these 3 remained. They also said they checked all wiring according to the Topix instructions.

It sounds as if trying a module first would be more sensible. I see it's fairly easy to find one on eBay. Do you know if it will need coded or is it plug and play?

Thank you.

 

I can see why it was placed where it was as it was clear from the owners manual that it was intended that the rear of the armrest lining was to contain a hatch for access, but for whatever reason it was dropped from production.

I hear that on the replacement they are considering placing the main fuse box on the underside of the transmission tunnel so you need to drop the rear axle and drive shaft to change a fuse. *
*I may have made that up...

As the wiring has been checked and the module was disconnected it seems a good choice to replace it. Parts are:
VIN to V00476 - C2D2774 - £117.96 (same as the original XF/X250 from R47154 to R71186)
VIN from V00477 to V90865 - C2D15355 - £149.11 (same as the X250 from R71187 to S20752)
(I'm assuming you have a pre-2014 vehicle else it should be covered under the UK factory warranty.)

If you are searching for parts by the WERS number then the modules are YMOD-13K031-REV. I'm not that familiar with the X250 but believe the MOD is X23 (W93 for the XJ).

*W93-13K031-* returns no matches so I think the part fitted to the X351 may be the same release as that fitted to the X250.
*X23-13K031-* returns a few matches, and it looks like *H52-13K031-* was fitted to some earlier XFs which is the MOD from one of the LR vehicles.

I think C2D2774 is 9X23-13K031-AB and C2D15355 is 9X23-13K031-AD. The last letter suffix means a different revision (in this case different software, but the hardware has the same engineering number stamped on the photos I've found online). Revision AC might be either from the dates. (The manufacture date is stamped on the module - ADs where made 2009 through to at least 2012 which fits with the VIN range for C2D15355.)

Most of the used prices on eBay are not far off the new cost. (If you want new but can't get the prices shown above PM me as I may be able to get a discounted one to you in the UK.) They are shown as programmable parts, which suggests they may need programming to the vehicle but I have never replaced one so don't know if you need to. I suspect they pick up the CCF from the other modules and self-configure for the vehicle options.

 

Thanks again for all this information.

I have created the fuse compartment hatch that they should have made in the first place. It does look as if someone just forgot to add the flap during the design process.

My car is 2010 and would be C2D2774 according to your list. The headlamp control module shows 9X23-13K031-AC. The Hella part is 5DF 009 041-75/AC. It's £108.02 + VAT from Jaguar and according to them it does need coding. I've bought one which has the same number except with AD on the end. It is from a 2014 Portfolio which will have had adaptive headlights, so hopefully the coding will already be correct. I can return it within 14 days at my cost if it is wrong or not needed.

 

xdave I am sure glad you are on this forum!

I can't even find a complete service manual for the XJ outside of TOPIX and you seem to have all the service information.

Do you work for Jaguar?
Because they sure could use a couple of dozen guys like you!
.
.
.

 

I got the new module today. Fitting it was the easy, but alas I caused myself a load of hassle by disconnecting the battery and shutting the boot. What an idiot.

Anyway, the new module made no difference; I still have the adaptive headlight warning flashing. Having had the battery disconnected for several hours while I tried to get back into my boot, I imagine fault codes have cleared so a diagnostic reset is not the issue.

Could it need coded? I doubt that because it was in Portfolio and I expect that even if it was coded for non-adaptive headlights that would get ride of the warning because the car would no longer check for adaptive headlights.

What are my options now? New headlights might be the next step, but I'm not keen to spend four figures just so that I can see an extra yard round corners.

If I had adaptive headlights coded out, so that the car is just set for standard headlights, am I correct that that would remove the adaptive headlight fault warning? And if it removes that warning, would it allow the headlights to do the auto leveling movement necessary for an MOT?

Thanks

 

Been there once myself - now I place a screwdriver through the latch hoop to stop it engaging when the battery is disconnected.

That is a shame.

Reprogramming it may help, but I'd lean towards it probably making no difference.

I know you have had someone check the wiring, but it might be work rechecking yourself just to rule it out. Test for continuity/low resistance between:

a) Central junction box C3BP01D/40 YE-OG to LH lamp pin 14
b) CJB C3BP01D/30 BVT-GY to RH lamp pin 14.
c) CJB C3BP01D/19 to both headlamps pin 5.
d) C3BP01G/16 BU to headlamp module pin 10.
e) Headlamp module pin 7 to both headlamps pin 13.
f) Headlamp module pin 17 to both headlamps pin 7.
g) Check grounds - Headlamp module pin 1, and both headlamps pins 6, 15 and 16.

C3BP01D is the large green connector bottom right.
C3BP01G is on the rear of the fuse box. See attached diagram for the position.

Also check for ~12V on (a) and (b) straight after unlocking the car (it may only be for a few seconds as the CJB may shut down the circuits in a fault condition). You can lock the car with the bonnet open by unplugging the bonnet catch switch and temporarily shorting it out with a paper clip.

I suspect the instrument cluster is programmed to activate or disable the warning legend. It may be through the vehicle's CCF rather than specific module programming.

Where in the UK are you? I'm in Devon and would be happy to test with a set of AFS lamps if you could get the car to me.

Maybe. From the codes the logged fault is with the AFS motors not the levelling ones, so you should be fine with them disabled through configuration. I've never tried that though, so I'm only able to base that on the way other features like ACC are configured and the fact the AFS lamps have a clear config setting in the CCF. (Adaptive front lighting system - Fitted/Not Fitted)

 

Thank you for that comprehensive response.

Unfortunately, I could hardly be further away from you, but given the potential cost of getting this wrong a detour to Devon when I am next in England might make sense.

I went back to the garage today to see if he could code out the AFS lights, but he could not see a way to do that using his Autologic software and the three fault codes were still stored (one for each swivel motor, and also a third code for the data bus between the headlights).

He did not check the wiring from the CJB behind the seat because Topix did not recommend that for the chassis number.

He said just swapping the module from another car would not work even if the car was the same as the module would need to be programmed, which can be done with his Autologic system. He's happy to try that for me if I get another one, so perhaps I should give that a go.