Hyundai Sonata LF 2014-2019 Service Manual: Mode Control Actuator Components and Components Location
Components Location
1. Mode control actuator
...
Hyundai Sonata LF 2014-2019 Service Manual: Brake Booster Repair procedures
Brake Booster Operating Test
For simple checking of the brake booster operation, carry out the following tests.
1.
Run the engine for one or two minutes, and then stop it. If
the pedal depresses fully the first time but gradually becomes higher
when depressed succeeding times, the booster ...