Friday, 27 May 2022 11:06

MQB-sniffer for Volkswagen Golf MK7

CAN-BUS sniffing for Volkswagen Golf MK7 (and most likely other MQB platform cars). Currently this is more a work log for future reference.
Example data sniffed from OBDeleven-Car communication

Starting and maintaining communication with instrument cluster

714 8 02 10 03 55 55 55 55 55 - Accessing instrument cluster
77E 8 06 50 03 00 32 00 C8 AA - Cluster reply

714 8 03 19 02 AE 55 55 55 55
77E 8 03 59 02 19 AA AA AA AA

714 8 02 3E 00 55 55 55 55 55 - I'm here, don't sleep
77E 8 02 7E 00 AA AA AA AA AA - not sleeping!

714 8 02 3E 00 55 55 55 55 55
77E 8 02 7E 00 AA AA AA AA AA
...

RPM from instrument cluster

714 8 03 22 22 D1 55 55 55 55 - request
77E 8 05 62 22 D1 1F 98 AA AA - reply (0x1F98 = 8088 DEC; 8808 / 4 = 2022RPM)

Phototransistor instrument cluster (ambient light sensor)

714 8 03 22 22 4D 55 55 55 55 - request
77E 8 04 62 22 4D FA AA AA AA - reply (0xFA = 250 DEC; 250 out of 0-255 range; higher=brighter)

Enagaged gear from DSG

7E1 8 03 22 38 16 55 55 55 55 - request
7E9 8 04 62 38 16 00 AA AA AA - gear not engaged
7E9 8 04 62 38 16 0C AA AA AA - reverse
7E9 8 04 62 38 16 02 AA AA AA - 1st

Gearbox mode from DSG

7E1 8 03 22 38 15 55 55 55 55 - request
7E9 8 04 62 38 15 00 AA AA AA - P
7E9 8 04 62 38 15 01 AA AA AA - R
7E9 8 04 62 38 15 02 AA AA AA - N
7E9 8 04 62 38 15 03 AA AA AA - D
7E9 8 04 62 38 15 04 AA AA AA - S
7E9 8 04 62 38 15 05 AA AA AA - M

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