S3 8P Sportback xenon light / bulb issue

Hi, I have got a Sportback 09 reg S3 (8P) and have had an issue with my xenon passenger side light. It came up on my dash that the main dipped beam was out. As it's not working, I bought a pair of new bulbs from Ebay and followed the guide on how to change them. Ive done everything but it's still not working. Just incase the bulb was faulty, I changed it again for the other and changed the driver side too. Still no luck. I have also noticed that there is a little moisture inside the light. I put this down to it not being in use for a while though. Any help would be appreciated!

FYI, these are the bulbs that I bought. They are both working on the driver side just not the passenger:
(2x Genuine Philips D3S d3s 35W Xenon Bulb Gas Discharge Lamp New 4300k | eBay)

Thanks.

Any idea which fuse it would be? I will check it in the morning.

I've just checked both the fuse boxes and also the instruction manual but it doesn't reference the headlights at all.

After a little more research (and checking fuses), I think it may be the ballast. I'm going to scan it with VCDS later to see what that throws up. Could anyone confirm if the ballast is easy to fit and if the part number is 8K0 941 597 for a 2009 car with DRL.

I've now been able to do a scan and it shows the following:

Address 09: Cent. Elect. Labels: 8P0-907-279-30-H.lbl
Part No SW: 8P0 907 279 N HW: 8P0 907 279 N
Component: Bordnetz-SG H54 2801
Revision: 00H54000 Serial number: 00000008717869
Coding: 898E0F81B0141380EF00000A0000000000084E0564060403642000000000
Shop #: WSC 06314 123 08192
VCID: 489B5ED13BFD9C5E1C3-801D

Subsystem 1 - Part No: 8P2 955 119 F Labels: 1KX-955-119.CLB
Component: Wischer AU350 H10 0040
Coding: 00056595
Shop #: WSC 06314

1 Fault Found:
00978 - Lamp for Low Beam; Left (M29)
010 - Open or Short to Plus
Freeze Frame:
Fault Status: 01101010
Fault Priority: 1
Fault Frequency: 1
Reset counter: 166
Mileage: 78118 km
Time Indication: 0
Date: 2014.01.27
Time: 20:58:00

Freeze Frame:
OFF
Voltage: 12.50 V
OFF
OFF
OFF
OFF
OFF


Any help on this would be really appreciated.

One last bump on this. Anyone with any ideas on the above?

Thanks guys. I've ordered a ballast so will try that over the weekend to see if it works.

If not, in to Audi it goes :-(

Changed the Ballast and it's working again now. I was able to get in to it through the arch liner in the end so not a massive job Thanks for your help!