The mode changes between ACCESSORY and ON, but it is difficult to change to OFF (LOCK) (2017 2018 2019)

Diagnostic procedure 

• Check the keyless access/TPMS control unit
• Check the gauge control module
• Check the park pin switch

Also check for 

• Gauge control module
• Keyless access/TPMS control unit
• PCM
• B-CAN communication line open/short
• F-CAN communication line open/short
• Speed signal line open
• Park pin switch
• P-PIN SW line open