![2011 Audi A4 with fault codes on the picture. Replaced the a/c pressure switch but still a/c not working. We have proper 2011 Audi A4 with fault codes on the picture. Replaced the a/c pressure switch but still a/c not working. We have proper](https://f01.justanswer.com/AudiDoc/b10932d8-cbc3-451c-a0d6-628541770b0d_B8A4_J519.png)
2011 Audi A4 with fault codes on the picture. Replaced the a/c pressure switch but still a/c not working. We have proper
![Audi Workshop Manuals > A4 Mk2 > Vehicle electrics > Electrical system > Wiring > Relay carriers, fuse carriers > Removing and installing onboard supply control unit J519 Audi Workshop Manuals > A4 Mk2 > Vehicle electrics > Electrical system > Wiring > Relay carriers, fuse carriers > Removing and installing onboard supply control unit J519](https://workshop-manuals.com/audi/a4_mk2/images/a4-20373.png)
Audi Workshop Manuals > A4 Mk2 > Vehicle electrics > Electrical system > Wiring > Relay carriers, fuse carriers > Removing and installing onboard supply control unit J519
J519 ECU Bonnetswitch/oil level fix turn into - no signal light and no horn and no connection to VCDS (vw t5 1.9 2007) | VW T4 Forum - VW T5 Forum
I have a 2005 Audi A4, the J519 module burned up and I have several wires to a crisp. I need a wiring diagram to figure
![J519 Bcm Gateway Computer Control Module 1k0 937 087 Q 1k0937087q - Coils, Modules & Pick-ups - AliExpress J519 Bcm Gateway Computer Control Module 1k0 937 087 Q 1k0937087q - Coils, Modules & Pick-ups - AliExpress](https://ae01.alicdn.com/kf/HTB1_YcTeoWF3KVjSZPhq6xclXXa8/J519-BCM-Gateway-Computer-Control-Module-1K0-937-087-Q-1K0937087Q.jpg_Q90.jpg_.webp)
J519 Bcm Gateway Computer Control Module 1k0 937 087 Q 1k0937087q - Coils, Modules & Pick-ups - AliExpress
![Audi Workshop Manuals > A4 Mk3 > Heating, ventilation, air conditioning system > Air conditioning > Air conditioner > Components for control and regulation of air conditioner located in passenger compartment > Audi Workshop Manuals > A4 Mk3 > Heating, ventilation, air conditioning system > Air conditioning > Air conditioner > Components for control and regulation of air conditioner located in passenger compartment >](https://workshop-manuals.com/audi/a4_mk3/images/a4-16135.png)