DIY: AUDI A7/S7/RS7 LED Headlight retrofit
Ive been in the proccess of retrofitting the OEM LED Headlights on the 4G model.
My car came fitted with the Bi-xenon automatic headlights. All tho i wanted a car with LEDs, the only option out there on the marked when i bought my A7 used with this amount of equipment was with Bi-xenons. So my plan was all along to retrofit this.
Here is my DIY for this job including my coding.
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AUDI A7 BI-XENON to LED
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(Vehicle equipped with cornering lights (more parts needed))
(this guide is the same for A6 C7. But on that you need different wires for the headlights, and 2x fans for your lamps.)
I Recommend you to do a SCAN of your vehicle to determine if you have some of the parts you need.
You should already own VCDS or some other tool to do the programming at the end.
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Next these are the required components for this job:
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2x 4G0907472 or 4G0907472B
2x 4G0907472A or 4G0907472C
2x 4G0907697F or 4G0907397F (you cannot use your old xenon unit, even if etka says so...) These are however the same unit in skodas etc, so i got them pretty cheap using a swedish carparts database.
1x 4G8941033 LED Lamp LEFT.
1x 4G8941034 LED Lamp RIGHT.
Any Letter on the end is the revision. Higher letter: bug fixes or changes to hardware. I made sure to buy same revision on both of mine.
NB: THIS IS NOT THE CASE FOR THE ECUs mentioned above. Only the lamps.
I bought 4G8941033E and 4G8941034E.
Both used from two different sellers.
IF YOU HAVE CORNERING LIGHTS: Address 55, same as mine 4H_4_907357 and not a 0, then you need this too:
1x 4H0907357 any revision on the letter. i got the 4H0907357B
IF YOU HAVE CORNERING LIGHTS:
1x https://www.kufatec.com/en/audi/a7/a...number=40190-1
IF NOT:
1x https://www.kufatec.com/en/audi/a7/a...0?number=40190
IF YOU HAVE CORNERING LIGHTS:
1x https://www.kufatec.com/en/light-sig...a6-a7-4g-39885
Here is a picture of all my parts ready to go:
20200103_194932 by Kristoffer Grovan, on Flickr
20200115_171145 by Kristoffer Grovan, on Flickr--------------------------------------------------------------
This is my Address 09 scan:
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Address 09: Cent. Elect. (J519) Labels: 4H0-907-063.clb
Part No SW: 4H0 907 063 BF HW: 4H0 907 063 F
Component: BCM1 2.0 H12 0100
MY unit is a BF. Ive read on motor-talk.de that BG and BP works.
I bought a BP unit. Before replacing this take note of your long coding of your old unit, and do a Adaption map.
Restoring adaptations did not work for me as the module wasnt the same, so i had to open the adaptations map csv file in a CSV viewer application. And manually move them over.
With installing a new unit. the unit will have CP (Component Protection), this only makes headlight washer not work, dim all interior button switches etc to minimum.
And interior lights wont work either. No big deal. Just go to the dealer to make them remove CP. I paid 150$ for my removal. Insane for a 5min job.......
If you wanna wait with CP removal, that is no problem. All exterior lights will work because of safety.
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This is my Address 55 scan:
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Address 55: Xenon Range (J431) Labels: 4H4-907-357.clb
Part No SW: 4H4 907 357 A HW: 4H4 907 357 A
Component: ....AFS13.... H01 0012
Component is AFS. That is the Cornering lights and automatic xenon control as my car can auto low/highbeam.
What you need is a aLWR (german word for aHLS) module for address 55. Partnumber: 4H0907357B.
a aLWR module does not work with xenons. I have tested by trying to code my aLWR with xenon headlamps and xenon functions onto the aLWR before convertion.
Remember to copy your code from the old AFS module, and insert these parts from the long coding, into your new module. (Not all coding will be accepted. Just the parts with your suspension type and stuff.)
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2. WIRING and INSTALLATION:
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Run the wires according to the kufatec manual you get when buying the cables.
My route was through the fender.
1. Remove inside footwell cover:
cabling-3 by Kristoffer Grovan, on Flickr2. Remove wheel and then the wheelwell liner.
3. Remove the bolts wires and washerfluid pipes as shown:
cabling-1 by Kristoffer Grovan, on Flickr4. Prepare a ziptie to hang your tank from so you dont have to disconnect any pumps. Follow the steps in the picture:
cabling-4 by Kristoffer Grovan, on FlickrBreak picture :)
20200104_135955 by Kristoffer Grovan, on Flickr5. Use a pullthrough wire, its a really tight fit.
cabling-5 by Kristoffer Grovan, on FlickrI spent literally 30mins on this part. Even though being an electrician.
cabling-6-2 by Kristoffer Grovan, on Flickr
cabling-6 by Kristoffer Grovan, on Flickr6. Prepare the wires for a pull through using lube.
cabling-7 by Kristoffer Grovan, on Flickr
cabling-8 by Kristoffer Grovan, on Flickr
cabling-9 by Kristoffer Grovan, on Flickr
cabling-10 by Kristoffer Grovan, on Flickr7. Start ziptying the wires in the route indicated
cabling-11 by Kristoffer Grovan, on Flickr
cabling-12 by Kristoffer Grovan, on Flickr
cabling-13 by Kristoffer Grovan, on Flickr
cabling-2 by Kristoffer Grovan, on FlickrBCM WIRING NEXT:
8. Inside the vehicle remove the beige 16pin plug and connect the wires indicated in the manual
cabling-14 by Kristoffer Grovan, on Flickr9. Remove the other beige plug and insert the wires indicated in the manual
cabling-15 by Kristoffer Grovan, on Flickr10. Remove the red plug and insert the wires indicated in the manual
cabling-16 by Kristoffer Grovan, on Flickr11. Wiring ready on BCM module:
cabling-17 by Kristoffer Grovan, on Flickr
cabling-18-overview by Kristoffer Grovan, on Flickr12.BCM replacement. AGAIN YOU NEED TO SAVE YOUR LONG CODING AND ADAPTATIONS WITH A ADAPTATIONS MAP!!!!!!
cabling-19 by Kristoffer Grovan, on Flickr
cabling-20 by Kristoffer Grovan, on Flickr
cabling-22 by Kristoffer Grovan, on FlickrRestore your coding and adaptations.
At this point i buttoned everything up and decided to continue later, meanwhile going to the dealer to remove CP.
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3. HEADLIGHT INSTALLATION:
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1. Remove the blue AFS housing. (only for bi-xenon)
cabling-25 by Kristoffer Grovan, on FlickrInstall new aLWR module. (address 55)
cabling-26 by Kristoffer Grovan, on Flickr2. Remove Bumper by removing the indication bolts and stuff:
cabling-27 by Kristoffer Grovan, on Flickr
cabling-28 by Kristoffer Grovan, on Flickr(on both sides)
cabling-29 by Kristoffer Grovan, on Flickr
cabling-30 by Kristoffer Grovan, on Flickr(on both sides)
cabling-38 by Kristoffer Grovan, on Flickr(on both sides)
cabling-31 by Kristoffer Grovan, on Flickr
cabling-32 by Kristoffer Grovan, on Flickr
cabling-33 by Kristoffer Grovan, on Flickr3. Disconnect wires for ACC, Sensors, washerfluid hose and camera, remove bumper.
4. Remove headlights by loosen these bolts (DONT REMOVE):
prepping headlights4 by Kristoffer Grovan, on Flickr5. Pull wiring to the right side as indicated in the manual:
cabling-35 by Kristoffer Grovan, on Flickr6. Move hardware from each headlight over to the new headlights:
prepping headlights3 by Kristoffer Grovan, on Flickr
prepping headlights1 by Kristoffer Grovan, on Flickr
prepping headlights2 by Kristoffer Grovan, on Flickr7. Install Headlights. Remember to move the hose for the headlight indicated in blue:
cabling-36 by Kristoffer Grovan, on Flickr
cabling-37 by Kristoffer Grovan, on Flickr
cabling-40 by Kristoffer Grovan, on Flickr8. Reinstall the bumper following the other steps:
IMG_0191 by Kristoffer Grovan, on Flickr---------------------------
4. Coding:
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Coding is the same for with or without cornering lights.
Audi A7 4G
Adresse 55
Plain text coding or selection: (Byte 03 – HEX 60):
Headlight Variant -> LED-Headlight
THEN MAKE BASIC SETTING!
THEN CONTINUE HERE:::::
Adresse 09:
Byte 00 - HEX 0D
Byte 01 - HEX 07
Byte 04 - HEX 09
Byte 05 - Bit 1
Byte 09 - Bit 7 on 0 (If errors in aLWR boksen)
Byte 14 - HEX 18
Byte 15 - HEX 00
Byte 21 - Bit 0 på 0
Byte 25 - HEX 01
Byte 27 - Bit 0, 2
Byte 28 - Bit 0, 1, 2, 3
Adresse 20 (If Available):
Byte 0 - HEX 04
Adresse 85 (If Available):
Byte 0 - Bit 2 on 0
Sub-bus participant LED Modul (under Address 09): (NOT AVAILABLE IN MY VEHICLE)
Byte 00 - HEX 11
Adjustment in Address 09:
Channel 3 - on 26
Security Code 20103
I also had to the following not indicating anywhere:
Byte 5, set Bit 7 to 0. (disable AFS)
Final shots:
20200219_193223 by Kristoffer Grovan, on Flickr
20200219_194429 by Kristoffer Grovan, on Flickr
20200219_194537 by Kristoffer Grovan, on Flickr
20200219_203031 by Kristoffer Grovan, on Flickr
20200219_203022 by Kristoffer Grovan, on FlickrThese lights are another level.
Getting them adjusted by a shop tho!
ALSO::: I had to repair the left side, came in broken twise from two different sellers on ebay, so if anyone need help in repairing, ship the light to me, and ill fix it for a little something...
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