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| D3 - Lights Headlights, xenons, foglights. Everything outside the car that glows |
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Thread Tools | Display Modes |
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#1
21st May 2015, 03:32 PM
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Is J519 control unit responsible for bulb warnings?
If so, could the firmware be modified so lower wattage lights can be used without issuing a bulb warning?
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Matt 2004 A8 3.7q, 1998 A4 2.8q, 1994 Coupe 2.8q SORN, Last edited by mattylondon; 21st May 2015 at 03:54 PM. 
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#2
21st May 2015, 04:03 PM
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Is guess your probably right but how would you know where to start with something like that?
would it not be protected or compiled to prevent people like you messing with it 
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Del 
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#3
22nd May 2015, 09:11 AM
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You're probably correct Del. But I've gone ahead and bought a replacement unit to hack about with. I'm sure there are some STMicroelectronics eeproms on the board as I saw a modded Q7 J519 (see below pic). Hopefully the A8 will have similar and I can read them in my eeprom programmer.
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Matt 2004 A8 3.7q, 1998 A4 2.8q, 1994 Coupe 2.8q SORN,
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#5
22nd May 2015, 10:57 AM
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On that Q7 unit they added some bridging wires because the owner was retrofitting V12 LED DRLS.
http://ludocar.free.fr/Audimodif/Aud..._partie_2.html
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Matt 2004 A8 3.7q, 1998 A4 2.8q, 1994 Coupe 2.8q SORN,
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#6
22nd May 2015, 12:17 PM
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So have you done any eeprom hacking before?
I would love to know the inner workings of some of these ecu's in the cars. Been thinking of sniffing can data for a wee project
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Del
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