Hyundai Sonata: Illuminated engine start/stop button

Whenever the front door is opened, the engine start/stop button will illuminate for your convenience. The light will go off after about 30 seconds when the door is closed.
Engine start/stop button position
OFF
To turn off the engine, press the engine start/stop button with the engine start/stop
button in the ON position and the shift lever in P(Park). When you press the engine
start/stop button wit ...
See also:
Engine Coolant Temperature Sensor (ECTS). Specifications
Specification
Temperature
Resistance (kΩ)
°C
°F
-40
-40
48.14
-20
-4
...
Repair procedures
On-vehicle Inspection
Spark Test
1.
Disconnect the ignition coil connectors (A).
2.
Remove the ignition coils (A).
...
Description and Operation
Description
Ignition timing is controlled by the electronic control ignition timing
system. The standard reference ignition timing data for the engine operating
conditions are preprogrammed ...

