Lost DRL on offside LED headlight

[mrharrod]

Hello Peeps!

The DLR leds do not come on but low/high beams work fine on passenger side.
Driver side is fine (both DLR and beams are good.
No dash warnings.

I get this error on ODB scan (OBDEleven)

Engine: CXEB 150 kW (204 hp) 2.0l
    Mileage: 15580 km

---------------------------------------------------------------
09 Central Electrics
        System description: BCM PQ25 Max4
        Software number: 7E0937090C
        Software version: 0752
        Hardware number: 7E0937090C
        Hardware version: H82
      
        Faults:
                02745 - Left daytime running lamp bulb
                static
                    priority -  3
                frequencyCounter - 19
                drivingCycle - 204
                km-Mileage - 15589 km

On the headlight, I see two ballasts/modules.
Top one is Part number 7PP941571AE. Does that control the DLR lights too? or at least provide power?
No idea what the bottom module is for? (would have to remove the bumper to get to it I feel

Thanks,
Chris.

 

[Sackmycook]

H4's or H7's or LED oem or aftermarket?

 

[mrharrod]

H4's or H7's or LED oem or aftermarket?

Hey Sackmycook, LED OEM for sure and car out of warranty

 

[Robert]

On the headlight, I see two ballasts/modules.
Top one is Part number 7PP941571AE. Does that control the DLR lights too? or at least provide power?

7PP941571AE is for low/high beam only.
The other power module (4G0907697G) is for side/DRL lights.
You need to verify if your problem is faulty power module or the actual set of LEDs.
I would suggest to swap 4G0907697G from the other side and then you know 100% what has failed.
Front bumper off is a must.

 

[mrharrod]

Ah perfect! Now I know need to remove bumper for sure and will test like you suggest. Thanks very much. Will do this when sun and heat come together one day

 

[Greybeard]

Ah perfect! Now I know need to remove bumper for sure and will test like you suggest. Thanks very much. Will do this when sun and heat come together one day

Hi @mrharrod
Hoping the sun and heat have subsequently aligned.
Did you find a resolution to this?
I have just discovered the same issue.
Thanks
Andy

 

[mrharrod]

Hello mate, Yes I followed the bumper removal guide

(

)

Swapped the DLR ballast from headlight unit (There are two, one is for headlight and the other is DLR) with the Drivers side DLR ballast to confirm bad passenger side DLR ballast first.

This was the part I needed to replace the faulty DLR ballast (4G0.907.697.G Delphi 28548011 DLR light module).
check the label for your ballast to confirm that same or not).

Ordered replacement DLR module ballast from https://www.hids-direct.co.uk/
Installed new ballast and it worked!
Reinstalled bumper. Happy days. No ECU reset or anything like that needed (for me anyway).

 

[mrharrod]

The ballasts are attached to each headlight unit (hence bumper has to come off to remove headlight unit and access to DLR ballast).

 

[Greybeard]

Hello mate, Yes I followed the bumper removal guide

(

)

Swapped the DLR ballast from headlight unit (There are two, one is for headlight and the other is DLR) with the Drivers side DLR ballast to confirm bad passenger side DLR ballast first.

This was the part I needed to replace the faulty DLR ballast (4G0.907.697.G Delphi 28548011 DLR light module).

check the label for your ballast to confirm that same or not).

Ordered replacement DLR module ballast from https://www.hids-direct.co.uk/
Installed new ballast and it worked!
Reinstalled bumper. Happy days. No ECU reset or anything like that needed (for me anyway).

View attachment 229482View attachment 229483

Wow @mrharrod . Thank you so much for your prompt, informative replies to an old post.
Very much appreciated by an old member!
Andy