Yes it seems the Elantra does not have VSS!!
The 327 by default works at 9600 bauds but can be set to 38400 bauds which is better.
I am taking a look at CAN spec but OMG it looks like more complicated :-/
I may take an ELM327 and interface it directly to the arduino (tx and rx) for the AT commands, and with a MCP2551 (The MCP2551 is a high-speed CAN transceiver, fault-tolerant device that serves as the interface between a CAN protocol controller and the physical bus) for CAN.
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2013 Hyundai Sonata Hybrid
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