Headlights not working correctly

[99a4turbo]

So I purchased this car from auction. We already replaced the starter, engine mounts, springs, and wheels that were all damaged. The amp was keeping the mmi from coming up so I have it temporarily looped until I can get this one repaired. I'm currently trying to figure out the light issues. the drivers low beam works but not the high. passenger low and high are both out but the side marker works. Both drls do not work. One fog light works on the driver's side and one reverse light. When I swapped the headlights, they stayed the same. any ideas where I should start with getting them to work correctly? Here's the log from VCDS:

Sunday,22,January,2023,21:08:23:39596
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 11 x64
VCDS Version: 22.10.0.1 (x64) HEX-V2 CB: 0.4623.4
Data version: 20221026 DS344.0
www.Ross-Tech.com


VIN: WAURV78T79A003997 License Plate:
Mileage: 179720km-111672mi Repair Order:



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Chassis Type: 8T-AU48 (8T0)
Scan: 01 03 05 06 07 08 09 0E 0F 10 15 16 17 19 1E 36 37 3C 42 46
47 52 53 55 56 65 67 6C 77

VIN: WAURV78T79A003997 Mileage: 179720km-111672miles

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Address 08: Auto HVAC (J255) Labels:. 8Tx-820-043-3Z.clb
Part No SW: 8T1 820 043 AC HW: 8T1 820 043 AC
Component: KLIMA 3 ZONEN H06 0140
Revision: C1000000 Serial number: 0130.05.081144
Coding: 48022000
Shop #: WSC 06325 000 00000
VCID: 72BDD2D1C4A68B5BED6-8026

2 Faults Found:
00457 - Central Electronics Control Module / BCM (J519)
013 - Check DTC Memory
Freeze Frame:
Fault Status: 01101101
Fault Priority: 6
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:58:54

00256 - A/C Pressure/Temperature Sensor (G395)
008 - Implausible Signal
Freeze Frame:
Fault Status: 01101000
Fault Priority: 7
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:58:54

Freeze Frame:
Temperature: 8.0°C


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Address 09: Cent. Elect. (J519) Labels:. 8K0-907-063.clb
Part No SW: 8K0 907 063 D HW: 8K0 907 063 D
Component: BCM1 1.0 H22 0253
Revision: 05022001 Serial number: 00000000056453
Coding: 26001091063CAF010000080300003D3D0F1C13880001016100 0000
Shop #: WSC 57921 001 1048576
VCID: 303918D90A2AF94B5B2-8064

Subsystem 1 - Part No SW: 8T1 955 119 C HW: 8J1 955 119 Labels: 1KX-955-119.CLB
Component: WWS 050608 H13 0040
Serial number: SWFBIE 0000932
Coding: 00FD11

Subsystem 2 - Part No SW: 8K0 955 559 HW: 8K0 955 559 Labels: 8K0-955-559.CLB
Component: RLS H04 0003
Serial number: 10149871
Coding: 02532C

Subsystem 3 - Part No SW: 8K0 941 531 J HW: 8K0 941 531 J
Component: E1 - LDS H07 0070
Serial number: 00000000000406081544

5 Faults Found:
02897 - Supply Voltage for LED Module for DRL and Parking Light; Right
012 - Electrical Fault in Circuit
Freeze Frame:
Fault Status: 01101100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:58:00

00927 - Terminal 30 (Right)
011 - Open Circuit
Freeze Frame:
Fault Status: 01101011
Fault Priority: 2
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:58:00

01330 - Central Control Module for Central Convenience (J393)
013 - Check DTC Memory
Freeze Frame:
Fault Status: 01101101
Fault Priority: 6
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:58:00

00256 - A/C Pressure/Temperature Sensor (G395)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 3
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:58:00

02258 - Door Opener Transmitter
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 3
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:58:00

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Address 0F: Digital Radio Labels: 4E0-910-593-SIR.lbl
Part No SW: 4E0 910 593 M HW: 4E0 035 593 F
Component: SDAR SIRIUS H07 0160
Revision: 00000000 Serial number: AUZ4Z7H0346119
Coding: 0000100
Shop #: WSC 06325 000 00000
VCID: 313F1DDD0D20F04354C-8064

1 Fault Found:
02635 - Tuner Not Enabled/Activated
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 7
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:59:05


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Address 3C: Lane Change Labels: None
Part No SW: 8K0 907 566 B HW: 4L0 907 566 B
Component: J0769_SWA_MasterH01 0040
Revision: 00H01000 Serial number: 6PZ 009 014-13
Coding: 0000004
Shop #: WSC 06325 000 00000
VCID: 36352EC1E44ED77B01E-8062

Subsystem 1 - Part No: 8K0 907 568 B
Component: J0770_SWA_Slave_H01 0040

Subsystem 2 - Serial number: 6PZ 009 014-33

Subsystem 3 - Serial number: 5F17.06.0800H010003CD10258ÿ

Subsystem 4 - Serial number: D10258ÿ

2 Faults Found:
00447 - Function Limitation due to Over-Voltage
001 - Upper Limit Exceeded
Freeze Frame:
Fault Status: 01100001
Fault Priority: 6
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:58:59

00532 - Supply Voltage B+
001 - Upper Limit Exceeded
Freeze Frame:
Fault Status: 01100001
Fault Priority: 6
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:59:54


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Address 46: Central Conv. (J393) Labels:. 8K0-907-064-46.clb
Part No SW: 8K0 907 064 AG HW: 8K0 907 064 AG
Component: BCM2 1.1 H71 0134
Revision: 00002001 Serial number: 0112213318
Coding: 0106029A007A444500B000
Shop #: WSC 57921 001 1048576
VCID: 75B7E9CDB5C89C63C84-8020

Subsystem 1 - Part No: 1K0 951 605 C
Component: LIN BACKUP HO H03 1301

Subsystem 2 - Part No SW: 8R0 959 591 HW: 8R0 959 591
Component: J245EE16SKB10 H01 0180
Serial number: 0123456789ABCDEFGHIJ

3 Faults Found:
02901 - Lamp for Brake / Blink / Parking 2; Left (M72)
012 - Electrical Fault in Circuit - MIL ON
Freeze Frame:
Fault Status: 11101100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:58:55

03233 - Controls for Garage Door Opener (E284)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:58:58

01134 - Alarm Horn (H12)
014 - Defective
Freeze Frame:
Fault Status: 01101110
Fault Priority: 2
Fault Frequency: 1
Reset counter: 135
Mileage: 179729 km
Time Indication: 0
Date: 2008.02.08
Time: 08:58:58

[Smac770]

No communication to either the J530 HomeLink transmitter by the J519 central electrics, nor to the E284 HomeLink controls by the J393 central convenience. Do you actually have HomeLink controls in the interior overhead unit? They are powered by the same fuse, driver's end of dash, black column, fuse 3. Have you validated every fuse in the car? Ends of dash, black column are term 15 (ignition on), brown column and red column are term 30 (always on), except the top 4 brown on the driver's end, those are engine managed.

G395, refrigerant pressure sensor on the radiator left end. Could be the sensor, not uncommon, could be the wiring back to the J519, known to develop corruption such there's a TSB for it.

H12, could be the unit. Could be no power to it (another fuse in the driver's end of the dash). Could be grounding. Could be LIN line to it from the J393. It's only got 3 wires to it.

J519 term 30, again, fuses, driver's end of dash. Or the wiring from it to the J519. Or the J519 is just trash.

As for the tail lights and head lights, just too much unverified wiring integrity. What headlamps do you have? Halogen or HID (bi-xenon)? Halogen have 10-pin plug. HID have 14-pin plug. Fog light, this the front fog lights or the rear fog lights.

[99a4turbo]

Thank you for the reply. I do have home link in the overhead console. It’s honestly the least of my worries.

I believe we have been through each and every fuse visually and with test lamp. I should have stated this earlier.

As for the headlights, they are bi-xenon. Fog lights are the front. I was leaning towards the J519 being the issue here due to the shear number of issues coming from its components. I’ve visually inspected quite a bit of the wire and it looks to be in good shape but my next step was continuity.

[Smac770]

Yeah, J519 might not be in the best of sorts.

Left headlamp. You say the HID bulb comes on for low beam, but goes off for high beam? Because the bulb is on the same for both, high beam just moves a shutter to focus the light beam higher down the road. youtu.be/3ar9bGLYLmI

You swapped the HID bulbs, but did you swap the HID ballasts? The J519 sends power to the HID ballast to power the HID bulb. Could be wiring inside the headlamps as well. Or wiring from the J519 to the headlamps.

You should measure 12v from pin 16 (term 30) to pin 17 (ground) on the brown and red 17 pin harness plugs.
You should also measure 12v from pin 15 and pin 16 on the black 17 pin harness plug to either pin 17 (ground) on the brown or red plugs.
16 on the brown plug probably powers the left headlamp
16 on the red plug probably powers the right headlamp
15 on the black plug is probably general J519 operations
16 on the black plug is probably the windshield wiper motor
17 on the black plug is not a ground

6-pin green plug is heated seats stuff; 12v from fuse on pin 3, lines to the seats on pin 1 and 6.

Communications is on the 16-pin plug, CAN bus on 14/15, which seems to be fine since VCDS can talk to it. LIN bus 1 to the wiper motor is on pin 2, LIN bus 2 to the J530 and G395 and such is on pin 4. If the J530 is there in its bracket on the backside of the radiator, pull the plug and check for 12v from pin 4 to pin 3, and check for continuity from pin 2 to the pin 4 on the J519 16-pin. For the G395 on the radiator, 12v from pin 3 to pin 1, and pin 2 is the LIN bus pin, same as the J530's (so you could test for J530 pin 2 to G395 pin 2, etc).

Should also find 12v on pin 16 of the T32B plug (black), but only with ignition on; it's "term 15".

left front fog light runs off 17-pin brown, pin 8. right front fog light runs off 17-pin red, pin 8.

[99a4turbo]

Thank you! I’ll begin checking the wiring and go from there. I didn’t just switch the HID from side to side I swapped the whole headlight assembly. When swapped they stayed the same, left just had low beams and right just had marker no matter which light was plugged in. I may be incorrect but I figured this was the best sure fire way to rule out all components of a single headlight assembly at once.

[burnthe]

I have both OEM headlights from my 2012 S5 (drl And afs) Taken off at 40 K miles comes with everything including the bulbs. Let me know if you’re interested and if so what your offer is?