When you move the shift lever to the R (Reverse) position, the side view mirror(s) will rotate downwards to aid with driving in reverse. The position of the side view mirror switch (1) determines whether or not the mirrors will move:
Left/Right : When either the L (Left) or R (Right) switch is selected, both side view mirrors will move.
Neutral : When neither switch is selected, the side view mirrors will not move.
The side view mirrors will automatically revert to their original positions if any of the following occur:
Hyundai Sonata LF 2014-2019 Service Manual: ESP Control Unit Repair procedures
Removal
1.
Turn the ignition switch OFF.
2.
Pull up the lock of the HECU connector , then disconnect the connector.
3.
Disconnect the brake tubes from the HECU by unlocking the nuts counterclockwise with a spanner.
Tightening torque :
ABS : 13.7 ~ 16.7 N.m (1.4 ~ 1.7 kgf.m, 10.1 ~ 12 ...
Hyundai Sonata LF 2014-2019 Service Manual: Muffler Components and Components Location
Components
1. Front muffler2. Center muffler3. Main muffler4. Gas ket5. Hanger
...