Emulate BMW CAN to allow for functional powered/heated seats
This all began with a friend wanting to install BMW E90 seats in his 3rd Gen 4Runner...
Utilizes an Arduino Uno with a CAN-BUS Shield V2 (https://www.seeedstudio.com/CAN-BUS-Shield-V2.html).
Need to install the Seeed-Studio CAN_BUS_Shield library from here: https://github.com/Seeed-Studio/CAN_BUS_Shield/archive/master.zip
Seats are part of a the BMW K-CAN network which includes all of the body control modules (A/C, infotainment, instrument cluster, seats, car access system, etc.)
NOTE: This information is currently valid for the E-series chassis in and around the year 2011-ish. I'll try to write down some more specific information on this in the future.
With regards to the CAN-BUS shield, I utilized the DB9 connector with the following pin-out:
- Pin 2 - Signal Ground (Optional)
- Pin 3 - CAN High
- Pin 5 - CAN Low
I power the Arduino utilizing a barrel connector connected to a DC 12V to 9V buck converter good for 2A (more than enough).
This is a work in progress
