R110 use UART, it uses serialRead() and serialWrite(), for the 10400 baud. (For the 5 baud it still uses bit banging, I don't know if the UART works at 5 baud?)
The answer should be 55 08 08 for ISO9141, maybe your car talks ISO14230?
Anyway as you receive 88, you should send ~88 as the answer, try it?
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2013 Hyundai Sonata Hybrid
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