Problem with A5 B8 Headlight Bulb

[NameInterest]

Greetings, I have just acquired a pre-owned A5 B8 and I am very content with it, with the exception of a single issue with the headlight bulb. The driver side primary headlight bulb seems to be illuminated, but with less intensity compared to the passenger side. I first speculated that the light conversion option in the MMI would be the cause, but, toggling it on and off does not provide any noticeable effects, to be frank. When crouching in front of the driver's headlight, it seems that the light is shining as effectively as the passenger's headlight. I am considering the possibility that the bulb may not be correctly aligned. Is it feasible that this is the case? I have come across tutorials on bulb replacement and headlight adjustment. I am seeking guidance from you all, since some of you may have had this problem before. Expressing gratitude!

[bellox]

Perform a thorough scan of the automobile using a suitable diagnostic tool specifically designed for VAG vehicles, such as VCDS, OBDeleven, Carista, ODIS, and others. The BCM/J519 module regulates the operation of the exterior lighting system in B8 models. In the event of a malfunction, an error code may be generated to indicate this issue. It should be noted that HID headlights use a sliding shutter to regulate the dipped and high beam configurations. You failed to indicate whether or not you conducted a comparison between the two HID beams when they were in the high-beam setting.

[NameInterest]

Greetings, I appreciate your timely response. A few days ago, I used Carista EVO to activate some specific features on my vehicle that were not initially enabled. After conducting a thorough scan of the car, I found two faults. The first fault is related to the front passenger's side mirror turn signal bulb, which I plan to replace soon. I need to determine whether the issue lies in the electrical circuit. The second fault pertains to the heating element in the right front seat, and it is unrelated to any external lighting problems. I will do a comparison of the beams at the high beam setting after work today and provide you with a response. Thank you!

[NameInterest]

In addition, I would want to provide extra assistance in order to perhaps contribute to finding a solution. By seeing the driver's headlight from a lower angle compared to the passenger's side, I am able to get a similar level of light output. This suggests that the issue may be related to the headlamp's alignment rather than an electrical problem. However, I am open to any recommendations.

[Cassole]

Based on my little expertise, it seems that this issue is more likely related to a misalignment problem. If the light is functioning properly, it is unlikely that there is an electrical issue.

[NameInterest]

I too share the belief that the issue may be resolved by attaching the spoiler and removing the headlight unit during a break in the wet weather. This will allow me to replace the bulb and hopefully resolve the problem. I am considering adjusting the headlights using the two screws located under the bonnet. However, it seems that just one bulb is misaligned, rather than the complete set. I am grateful for your response.

[bellox]

HID headlamp units should be equipped with two adjusting screws: one for vertical adjustment (-1-) and another for horizontal adjustment (left/right).

[bellox]

According to the service handbook, it is possible that -2- may have a securing plug. Therefore, it is important to be cautious and aware of this possibility.

[NameInterest]

Indeed, I first assumed that the adjusting screws would pertain to the complete headlight assembly, rather than only the HID component. However, I will thoroughly investigate this matter after my work hours today and provide you with a subsequent update. I really appreciate your effort in consulting the manual on my behalf. Thank you.