Hyundai Sonata: Convenient features of your vehicle / Indicator Lights

Master Warning Light

This indicator light illuminates When there is a malfunction on the low washer, Smart cruise control, and so on. To identify the details of the warning, look at the LCD display. ...

Electronic Stability Control (ESC) Indicator Light

This indicator light illuminates: Once you set the ignition switch or the Engine Start/Stop button to the ON position. - It illuminates for approximately 3 seconds and then goes off. When there ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: General Information
General Troubleshooting Information Before Troubleshooting 1. Check applicable fuses in the appropriate fuse/relay box. 2. Check the battery for damage, state of charge, and clean and tight connections. (Refer to Engine Electrical System - "Battery")     • Do not qu ...

Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Inspection 1. After disconnecting the vapor hose from the PCV valve, remove the PCV valve. 2. Reconnect the PCV valve to the vapor hose. 3. Inspect the PCV vlave operation. (1) Run the engine at idle. (2) Put a finger on the open end of the PCV valve. (3) Make sure that intake ...