Audi A4 B9 Coding List -

| Module | Name | Common tweaks | |--------|------|----------------| | 01 | Engine | Start-stop off, soundaktor off | | 03 | ABS/ESP | Brake assist sensitivity (not recommended for street) | | 09 | Central Elec. | Lights, wipers, coming home, folding mirrors | | 13 | Adaptive Cruise | Lane assist early/late reaction | | 17 | Instruments | Needle sweep, lap timer, seatbelt chime | | 42/52 | Door modules | Mirror folding, window comfort | | 44 | Steering | Steering weight adjustment | | 5F | MMI | Video in motion, menu activation | | 6D | Trunk | Power trunk close from key fob |

Access: [46] → Coding

| Function | Byte-Bit Change | Effect | |----------|----------------|--------| | Auto unlock when key removed | Byte 2, Bit 2 = 1 | Doors unlock automatically upon ignition off + key pull | | Locking confirmation beep (unlock) | Byte 4, Bit 3 = 1 | Audible chirp on unlock (not just lock) | | Window roll-down via remote (global open) | Byte 3, Bit 0 = 1 | Enables European-style remote window drop | audi a4 b9 coding list

Hold the lock button on the fob to roll up windows and close the sunroof.

Module 53 (Parking Brake) → Adaptations: (4)-Automatic release without seat belt → Change to Active. By default, the electric parking brake only releases if your seatbelt is on. This defeats that logic. | Module | Name | Common tweaks |

Proceed at your own risk. Incorrect coding can cause vehicle malfunctions or leave control units in a "bricked" state. Always back up your original coding (create a "VCDS Map" or save the trace file) before making changes.

Even with the right list, things go wrong. Here’s how to fix it. Access: [46] → Coding | Function | Byte-Bit

Access: [17] → Coding

| Function | Byte-Bit Change | Effect | |----------|----------------|--------| | Lap Timer / Oil Temperature Display | Byte 1, Bit 3 = 1 | Adds performance menu (lap time, boost, oil temp) | | Gear Display (P/R/N/D/S) in non-Virtual Cockpit | Byte 1, Bit 0 = 1 | Shows current gear next to PRNDS | | Seatbelt Warning Disable (Track use only) | Byte 4, Bit 0 = 0 | Suppresses chime (illegal in many regions) |

Unlock hidden settings for deeper system tweaks.