BusComparison

Signals and Busses

Popular Model 3/Y CAN messages and signals, and which bus they are on, to help choose which CANserver harness option you prefer.

In general, the Vehicle bus (with 3rd party OBDII adapter) has data from the battery and motors, and the Chassis bus (under the seat) has UI and autopilot data.

Updated with firmware 2020.24 - Tesla can and does change signals with each firmware update!

V C ID  signals
X X 00C UI audio display
  X 04F GPS loc
  X 101 RCM pitch roll yaw
X X 108 Rear Tourqe -diff?
  X 111 RCM lat lon vert accel
X X 118 pedal gear
X   126 Rear V A
X X 129 Steering angle
X   132 BMS V A
  X 185 Brake Torque
X   1D8 Rear Torque -diff?
  X 219 TPMS press temps
X X 229 Gear lever
  X 238 UI speedlimit
X X 249 left stalk
X   252 BMX discharge regen heat
X X 257 speedometer
X   261 12v batt V A AH
X   264 charger V A W
X   266 Rear power heat
X   268 system power regen heat
X   287 PTC
X   292 BMS SOCs packenergy
X X 2B4 PCS V A
X   2D2 minmax V A
X   312 BMS temps
X X 318 date time
  X 31F TPMS press temps
X   332 BMS brick minmax V T
X   336 power regen rating
X   33A UI range SOC
X   352 BMS energy remaining full
X X 399 DAS BSD speedlimit
X   3A1 VCfront driverpresent
X   3D8 elevation
  X 3D9 GPS heading speed limit
X X 3FE brake T
X X 7FF GTW config