Please check with your car manufacturer to ensure your car supports CAN or K-line. JBL DRG only works with CAN and K-line to get the engine data for engine sound simulation. If your car does support CAN or K-line, please launch the JBL DRG app and check the engine sound volume bar (the right column with button marked with “E”) in the “Sound Mode” section to make sure it is not turned off.