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Thread: Lights behaving oddly

  1. #1
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    Lights behaving oddly

    2007 B7 A4 Avant (Canadian) bought used a year ago and still in Canada but planned to be imported to the USA. The headlights are xenon and look like they are the correct type for that model year per my Bentley - i.e. a high/low xenon plus a running light. However, the running lights do not come on with the switch in the running light position and when the headlights are switched to high-beam, the running lights come on (and low beam xenon stays on). In other words they behave as if the control unit is expecting them to be the halogen variant, with separate high and low reflectors. The car is a fully loaded hi-line trim model so I expected it to have xenon but in Canada maybe they were banned and this is someone's upgrade from the halogen standard. My first question is "is there a way to tell from the VIN or elsewhere what the car "should" have?

    The other abnormal behavior is that there is an audible hum from behind the dash when the lights are turned on. I suspect monkey business by a PO since when i bought the car (was a dealer trade-in) it had an exhaust without a resonator (since put back to standard). It also has an aftermarket nav system.

    The central electrics module has an unusual comment about the USA (below). Anyone know what that means?

    Chassis Type: 8E (8E - Audi A4/S4/RS4 B6/B7 (2001 > 2008))
    Scan: 01 02 03 08 09 0F 11 15 16 17 18 25 36 37 45 46 55 56 57 65
    67 69 75 76 77

    VIN: WAUKF78E07A112234 Mileage: 169370km-105241miles

    -------------------

    Address 09: Cent. Elect. Labels: 8E0-907-279-8EC.lbl
    Part No: 8E0 907 279 N
    Component: int. Lastmodul USA 0907
    Coding: 00003
    Shop #: WSC 06325
    VCID: 3D27C4E32466A4DFB50-4B00

    1 Fault Found:
    00979 - Lamp for Low Beam; Right (M31)
    29-00 - Short to Ground

    Address 55: Headlight Range Labels: 4F0-910-357.lbl
    Part No SW: 4F0 910 357 F HW: 4F0 907 357 F
    Component: AFS 1 H01 0020
    Revision: 00000001 Serial number:
    Coding: 0000019
    Shop #: WSC 06335 000 00000
    VCID: 290F00B3C5FE287FE98-807C

    Subsystem 1 - Part No: 8E0 941 329 A
    Component: AFS-Modul links H03 0020

    Subsystem 2 - Part No: 8E0 941 329 A
    Component: AFS-Modul rechtsH03 0020

    No fault code found.

    Fault 00979 is new since my last scan a month ago and there has been no change in the functionality of the lights, so whatever circuit it is monitoring is not connected to a bulb. My question is not about this fault but how i decide whether I can/should get the lights functioning correctly: by replacing a non-standard controller or by replacing non-standard headlight units?

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  3. #2
    Benevolent Dictator Uwe's Avatar
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    09: Cent. Elect. coding looks wrong to me.

    The second to last digit in the coding should be a non-zero number:
    xxx?x: Headlights
    0 = Halogen Headlights w/o Daytime Running Lights (PR-8Q0/8Q1+8K0/8K7)
    1 = Halogen Headlights with Daytime Running Lights (PR-8Q0/8Q1+8K1/8K3/9C6/9C7)
    2 = Bi-Xenon Headlights with Daytime Running Lights (PR-8Q3/8Q5+8K9/8K4)
    3 = Bi-Xenon Headlights w/o Daytime Running Lights (PR-8Q3/8Q5+8K0/8K7)
    4 = Bi-Xenon Headlights with Daytime Running/Tail/License Plate Lights (PR-8Q3/8Q5+8K1/8K3)

    Can you find the PR-Codes Sticker for this car?

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

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  5. #3
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    I found the codes in the original maintenance record book but don't have a way to put the pic in the cloud.
    However, i suspect the codes you need are:
    8EH = Bi-functional headlight with gas discharge lamp for driving on the right(US design)
    8Q5 = Headlight-range adjustment automatic/ dynamic with dynamic bending light (AFS 1)

    There are no 8Kn codes on my sticker.

    I checked the meaning of all the other codes and no others appeared to be related to lights.
    Thx
    Bob

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    FoRT jyoung8607's Avatar
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    Quote Originally Posted by BobFisher View Post
    In other words they behave as if the control unit is expecting them to be the halogen variant, with separate high and low reflectors.
    An astute observation...

    Code:
    Address 09: Cent. Elect.        Labels: 8E0-907-279-8EC.lbl
       Part No: 8E0 907 279 N
       Component: int. Lastmodul  USA 0907  
       Coding: 000 0 3
       Shop #: WSC 06325  
       VCID: 3D27C4E32466A4DFB50-4B00
    And according to Uwe, that means:

    Code:
    0 = Halogen Headlights w/o Daytime Running Lights (PR-8Q0/8Q1+8K0/8K7)
    Quote Originally Posted by BobFisher View Post
    I found the codes in the original maintenance record book but don't have a way to put the pic in the cloud.
    I looked you up in PL24 by VIN. You have 8Q5 Dynamic headlight range control, with cornering light (AFS 1) and 8K9 Daytime headlights with automatic headlight control and coming home function. So that means you probably want:

    Code:
    2 = Bi-Xenon Headlights with Daytime Running Lights (PR-8Q3/8Q5+8K9/8K4)
    Here's the complete list. If you want, PM me your email address and I'll send you a more readable PDF copy for your archives.

    Code:
    Vehicle Identification No.	WAUKF78E07A112234
    Model	audi a4 av. qu. 2,0
    A4
    Date of production	16.10.2006
    Year	2007
    Sales type	8ED5EL
    Engine Code	BWT
    Transmission Code	HYH
    Axle drive	6A
    Equipment	NR
    Roof color	8A
    Carpet color code	 
    Exterior color / Paint Code	8A / Z5A
    Seat combination no.	 
    Number of Z-Orders
    Code:
    Special editions	E0A	Without special action equipment
    Lockable wheel bolts	1PA	Standard wheel bolts
    Vehicle class differentiation
    units/platform components	0CS	Vehicle class differentiation -8E0-
    tail pipe	0P0	Rear exhaust tailpipe (standard)
    Emission standard	7GB	Emission standard ULEV 2
    Trailer hitch	1D0	without trailer towing
    airbag	4UB	Airbag for NAR
    Label for central electric	0W2	Label for central electric system
    English-speaking countries
    Tray areas package	QE1	Storage compartment package 1
    Applications	GS0	Without applications
    Exterior mirror setting	6XL	Exterior mirrors with memory feature,
    auto-dimming, power-folding/adjustable/
    heated
    Left exterior mirror	5SG	Left exterior mirror, flat
    Right exterior mirror	5RW	Right exterior mirror, convex (US)
    large viewing field
    Drive type	1X1	Four-wheel drive
    Equipment levels	A8U	Executive US equipment
    Brake type in rear	1KW	Disc brakes in rear
    batteries	J0R	Battery 380 A (80 Ah)
    Brake type, front	1LA	Disc brakes in front
    Components with special surface	6FA	Components without special surface
    Component part sets with
    country-specific design requirements	B0A	build parts set without county specific documentatio
    Owner's manuals	0VM	Information kit in American English
    CD ROM/DVD/SD card	7QA	Without CD/DVD for navigation
    CD changer/CD player	7A0	Without CD changer/CD player
    General operating permit, alterations	C20	Operating permit, alteration
    Shock absorption/suspension, chassis	1BA	Federung/Daempfung, standard
    Roof rails/roof load rack	3S1	Bright roof rails
    Double DIN/dual-view display	2T1	Double-sized standard (DIN)
    Roof insert/convertible top	3FE	Tilting and sliding glass sunroof with
    sunbshade
    Load-through hatch/ski bag	3X0	without load through system
    Insert for the filling up of unleaded
    fuel/fuel type	2G1	Insert for the filling up of unleaded
    fuel
    Theft protection system	7AN	Anti-theft alarm system, backup horn and
    towing protection
    Inserts	7TC	Decorative inserts, beige birch vein
    Scuff plates	7M1	Scuff plates in door apertures with
    metal inserts
    Park distance control	7X0	Without park distance control
    Electric interface for external use
    UF0	Without electric interface
    Manufacturing sequence differentiation	0FA	Standard manufacturing sequence
    window regulator	4R4	Power windows with comfort operation and
    circuit breaker
    Hood and trunk stay	5NF	Interstop gas prop for tailgate
    Headlight activation	8K9	Daytime headlights with automatic headlight control
    and coming home function
    Fresh air intake for passenger
    compartment (with particulate filter)	2V1	dust-pollen filter
    Antifreeze	1C4	Antifreeze up to -40 degree Celsius
    Front spoiler	5L0	no front spoiler
    Vehicle specifications	F0A	No special purpose vehicle, standard
    equipment
    Alternators	8GR	Alternator 150 A
    Transmission types/gearshift mechanisms	0G7	tiptronic
    Transmission shafts, rear axle	1YF	Transmission shafts for rear axle,
    diameter 75.5
    Transmission shafts	1WH	Transmission shafts 75.5 mm in diameter
    Weight category rear axle	0YN	Weight range 13
    installation control only, no
    requirement forecast
    Weight category front axle	0JL	Weight category front axle
    weight range 11
    Base engine	T61	4-cyl. petrol engine 2.0 l assembly 06D.1
    Tie down straps/net/pocket	6M4	Load protection system
    cruise control system	8T1	Cruise control system (CCS)
    Garage door opener	VC1	Garage door opener
    Transmission specifications	G0R	6-speed automatic transmission for
    four-wheel drive
    Cruise control system and speed limiter	6Y9	without cruise control system
    Rear trim panel	6V2	Rear trim panel
    Rear spoiler	5J0	Without rear spoiler
    Molded headliner	6NJ	Standard molded headlining
    Rear seats	3NZ	Rear bench seat, not split, split backrest, folding
    Heating and air-conditioning system	9AK	Climatronic with impact pressure
    control, CFC-free
    Headlamps	8EH	Bi-functional headlamps with gas
    discharge lamp, for driving on the right
    (US design)
    Customized installation	FC0	Without individual installation
    Instrument clusters	U1A	Instrument cluster with km/h
    speedometer, clock, tachometer and trip
    odometer
    Instrument panel	4N0	Standard dashboard (Leather trimmed minor gauges
    + Ipod drawer)
    Breakaway interior rearview mirror	4L7	Breakaway interior rearview mirror,
    auto-dimming, with compass
    Body style	K8D	Wagon/Avant
    Luggage compartment floor covering	6SS	Luggage compartment floor covering
    Cassette and CD storage unit	4W0	without cassette / CD tray
    coolbox	1W0	Without refrigerator/glove compartment
    cooling system
    Fuel quantity for initial filling	1Z6	Increase in initial standard fuel
    filling
    Fuel systems	0F2	Fuel system for SI engine
    Body measures	5C1	Body measures for increased safety
    requirements
    Front license plate bracket	6W9	Front license plate bracket
    Paint preservative/transit coating	5K4	with no paint conversation
    Light package (lighting)	QQ1	With additional lights (interior
    lighting)
    Steering system arrangement	L0L	Left-hand drive
    steering	1N3	Speed-related variable steering assist
    (Servotronic)
    Lumbar support	7P1	Power adjustable lumbar support in front
    seats
    steering wheels	2ZQ	Leather-wrapped multi-function steering
    wheel for airbag system
    Speaker installation	8RY	loudspeaker with BOSE-sound
    Headlight range control	8Q5	Dynamic headlight range control,
    with cornering light (AFS 1)
    Center armrest	6E3	Front center armrest
    Versions	FM0	Basic equipment variant
    Multi-function display/trip computer	9Q2	Multi-function display/trip computer
    with check control
    center console	3D2	center console
    Engine cooling	8Z6	Hot country
    Engine specifications	D2L	4-cylinder petrol engine 2.0 L/147 KW (16 V)
    Turbo FSI, homogeneous
    Basic engine is: T59/T61/TQ2/TU2/TD6/TN6
    Navigation device	7Q0	without navigation system
    Upgrading measures	GP1	Vehicles with special upgrade measures
    Rear of platform module base	4P2	Rear floor panel module, type 3
    Audi Sport/ Quattro GmbH	FQ0	Series wheels
    Quality class	AQ0	Standard-production quality
    Wheels	C8F	Cast alloy wheels 7.5J x 17
    Radios	8YN	Radio "symphony" for USA
    Tire pressure monitoring system	7K0	Without tyre pressure monitor
    tire	HG6	All-weather tires 235/45 R 17 93H (NAR)
    Tire suppliers	V0A	Tires without specification of tire
    brand
    Spare wheel/breakdown kit	1G3	Alloy spare wheel with original
    equipment tires
     	PBS	audio package symphony
     	PPY	convenience package for Canada
     	WPX	premium package
    Side airbag	4X3	Side airbag in front, with curtain
    airbag
    Gearshift knob/handle	7F9	Gearshift knob/handle in plastic/leather
    Self-collection / special control	A05	Special control, identification number
    Special labels/plates	0SS	Labels in English and French
    Locking mechanism for boot lid/cover
    rear	4E2	Tailgate/trunk lid release
    from inside (electrically)
    Bumper systems	2K2	bumper reinforced
    Seat belt check	9P3	Seat belt reminder, electric contact in
    buckle
    seat covers	N1F	Seat trim covers in leather, G-grain
    pattern/leatherette, B-grain pattern
    Seat adjustment	3L4	Electric seat adjustment for both front
    seats, driver's seat with memory system
    seat heater	4A3	seat heating for front seats separat controlable
    Safety certificate	0LC	With special labels
    safety certificates for Canada
    Audio-response system/voice control	QH0	without voice control
    Side and rear windows	4KC	Side and rear windows in heat-insulating
    glass
    Sunroof roller blind for rear/side windows	3Y0	without roller blind
    power outlet	7B2	12 volt socket in luggage compartment
    Handling production and pre-production	FA0	Control of standard production
    Headlamp washer system	8X0	Without headlamp washer system
    Door and lid locking system	4K8	Central locking w/ radio remote contr.,
    interior controls in fr./rr. and sep.
    trunk release, two-stage unlocking
    Type approval countries/countries with
    special requirements	B35	Legal requirements Canada
    Carrier frequency for remote control	5D2	Carrier frequency 315 MHz
    Transit coating	NT1	Transit coating (type 2)
    TV reception/digital radio reception	QV4	Satellite radio reception USA
    Assembly parts for engine (drive bearing)	1VG	Assembly part for 4-cyl. engine
    Front underbody guard	1SA	Without additional front underbody guard
    Identification plates	1EP	Special identification label (USA)
    Type sign	2Z1	Type sign at rear
    and "Quattro" nameplates respectively
    First aid kit / warning triangle	1T1	First aid kit
    Front seats	Q1A	Standard seats in front
    Telephone / telematics	9W0	Without car phone preparation/
    installation
    Windshield Glass	4GP	Windshield in heat-insulating glass with
    sunshield and viewing window for vehicle
    identification number
    Additional tires (snow tires)	2WA	without spare tyre
    floor mats	0TD	Front and rear floor mats
    Decorative trims	4ZB	Bright decorative trims
    Additional child seat anchors	3B7	Child seat anchors as per Canadian
    requirements a. ISOFIX child seat system
    Auxiliary heating system	9M0	Without auxiliary heater/parking heater
    Silence gives consent.

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  9. #5
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    jyoung8607, thank you! I'll confirm everything works after i have changed the code, hopefully tonight. This will be my first "use in anger" of VCSD. I had no idea the car had the steerable headlights, so if the module hasn't been damaged from operating under duress, this will be going from famine to feast.

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  11. #6
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    Very happy camper here: everything is now working perfectly, including main beam and the "auto" position on the light switch. I re-coded all 5 digits of the Module 9 code and the whole process took maybe 15 minutes including looking up the codes (thanks for the VIN-specific report of my PR codes jyoung8607 !)

    Uwe - user-friendly software with the coding choices in the pop-up balloon.

    Hum is still there with the lights on and is coming from what looks like a sealed transformer covered with heatsink fins in the RH panel in the trunk (Avant) but that may just be age. I suspect it is the power supply for the Xenon bulbs. I'll see if it is still there in daylight tomorrow when it should light the running lights instead of the headlights in the auto position,

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  13. #7
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    Quote Originally Posted by BobFisher View Post
    I suspect it is the power supply for the Xenon bulbs. I'll see if it is still there in daylight tomorrow when it should light the running lights instead of the headlights in the auto position,
    What you're describing is the amplifier for the Bose sound system you have. Power supply (or rather ballasts) for the xenon bulbs are usually fixed under the headlights themselves.

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