CAN messages to control Easylink system I found:

47F Byte 2 = brightness instruments 00 to FA
B6 Byte 4 und 5 = gas throttle
A6 Byte 7 Bit 2 = throttle pressed
206 Byte 6 und 7 = break pedal strength
5C2 Byte 3 first hex is speed of blower fan (0 to 8)
5C2 Byte 0 und 1 = heating setpoint
46C Byte 3 = number of PTC active
69F = VIN = Anti Theft
53B clock from easylink to CAN bus


Easylink Wakeup - bare minimum frames
0x418 0x30 0x07 0x00 0x03 0x28 0x28 0xF8 0xA0
0x46B 0x01 0x00 0xA3 00 0x01 0x00 0x00 0xC0
0x47C 0x64 0x7D 0x42 0x01 0x91 0x00 0x70 0x04
0x47D 0x04 0xC1 0x77 0x95 0x60 0x01 0x20 0xC4

Control light behavior
0x47F 0x34 0x0C 0x96 0x00 0xEA 0x72 0x44 0x00

Engaged reversing camera window
0x25B 0x04 0x46 0x00 0xFF 0xFF 0xC0 = Normal
0x25B 0x08 0x46 0x00 0xFF 0xFF 0xC0 = Ein


46b Byte 1 01 Easylink active, 00 Standby
47d Byte 1 C4 Break, C1 no break
47d Byte 2 77 BT active, 00 BT disconnect/MUTE
47f byte 4 EA = Volume slider available, EE = Volume slider locker, lowered volume (for reversing) 
47f byte 1 8c=night 0c=day