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Audi A8 D3 Rear Door Issues

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Old Jan 16, 2026 | 08:46 AM
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Default Audi A8 D3 Rear Door Issues

Hi All.
Happy New Year!
It has been a while since I posted on here.
I could really do with some support.
Today I replaced my rear door on my Audi A8 d3 as the one that was fitted had several dents which was to much money to get repaired. The donor car is from year 2005 and mine is a 2003 and the new door came with everything fitted, handle, lock, window motor and Bose speaker. I fitted the door and then started the car but the window would not work and the door will not lock. I scanned the car and got an error code 01333 issue with rear left door control module (J388). Does anyone know if I need to code the door to my car? If I do does anyone know how to do this? Thank you so much.
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Old Jan 16, 2026 | 07:48 PM
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Originally Posted by Balsapal
Hi All.
Happy New Year!
It has been a while since I posted on here.
I could really do with some support.
Today I replaced my rear door on my Audi A8 d3 as the one that was fitted had several dents which was to much money to get repaired. The donor car is from year 2005 and mine is a 2003 and the new door came with everything fitted, handle, lock, window motor and Bose speaker. I fitted the door and then started the car but the window would not work and the door will not lock. I scanned the car and got an error code 01333 issue with rear left door control module (J388). Does anyone know if I need to code the door to my car? If I do does anyone know how to do this? Thank you so much.
Swap the door module over from your old door, job done.
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Old Jan 17, 2026 | 02:40 AM
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Hi dvs dave.
Thank you for your reply.
I have swapped over the window motor this morning which I believe also has the door module integrated into it and it did not work.
Do you think the lock actuator also needs to be swapped over?
Thanks.
Balsapal.
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Old Jan 17, 2026 | 06:17 AM
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Possibly. Before doing a full swap, just try plugging the modules in, see if they work. The door module may need to be reset or coded to suit whatever features the replacement door has
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Old Jan 17, 2026 | 10:05 AM
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Thank you for your advice, I will try this tomorrow.
Thanks again.
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Old Jan 17, 2026 | 04:12 PM
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I have retrofitted door handle light few years ago and bought a door wiring loom from a 2006 donor car . My car is 2003 A8 and once I have swapped the wiring loom nothing works. The reason is the loom wiring is totally different . If you look at the old wiring loom and the new one you have fitted from the donor car the pins location is totally different. What you need to do is take your door wiring loom from the 2003 door and fitted to the new door. The wiring loom is the one fitted to the B pillar not the door card loom.
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Old Jan 22, 2026 | 01:48 PM
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Hi FergusA8.
Thank you for your message.
I have swapped the wiring loom from the old door to the new door and everything thing works. The only issue is that the door keyless door handle won’t lock but it will open. It must be a broken button on the handle.
Thank you to you all for your support.
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Old Jan 22, 2026 | 08:40 PM
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Keyless door handle is a pain. If they are faulty the car wont go to sleep and drain the battery. After you have locked your car make sure the red warning triangle hazard light above the center console switch off in about 30 seconds if not you have to replace the handle.
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Old Jan 23, 2026 | 12:18 PM
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Thank you FergusA8 I am planning to swap over the handle in the next couple of days.
I will let you know how it goes. Thanks
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Old Yesterday | 04:58 AM
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Hi, I have swapped over the handle and it seems all good know. Thank you for your help.
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