E46 CAN Bus

The CAN Bus on BMWs E46 chassis operates at a speed of 500kb/s

DME4 0x545

• Byte 0 - Bitfield: Dash Lights
  • Bit 0 - Unused
  • Bit 1 - CEL
  • Bit 2 - Unused
  • Bit 3 - CRU_MAIN_SWI
  • Bit 4 - EML
  • Bit 5 - Unused
  • Bit 6 - check gas tank cap
  • Bit 7 - Unused
• Byte 1 - Fuel Consumption LSB
• Byte 2 - Fuel Consumption MSB
• Byte 3 - Bitfield - Oil And Cooling Lights
  • Bit 0 - Oil Level Error LED M5 Cluster
  • Bit 1 - Oil Level Warning LED Every Other Cluster
  • Bit 2 - Oil Level Error LED M5 Cluster
  • Bit 3 - Coolant Overheating Light
  • Bit 4 - M-Cluster Warm-Up LEDs
  • Bit 5 - M-Cluster Warm-Up LEDs
  • Bit 6 - M-Cluster Warm-Up LEDs
  • Bit 7 - Unused
• Byte 4 - Oil Temperature
• Byte 5 - unused on MS42 |
• Byte 6 - unused except in MSS54HP: oil level
• Byte 7 - unused