Hyundai Sonata: Brake System / Master Cylinder Repair procedures

Removal

1.	Turn ignition switch OFF and disconnect the negative (-) battery cable.

2.	Remove the air cleaner assembly (A).

3.	Disconnect the brake fluid level switch connector (A).

Remove the brake fluid from the master cylinder reservoir with a syringe.

•	Do not spill brake fluid on the vehicle, it may damage the paint; if brake fluid does contact the paint, wash it off immediately with water.

Disconnect the brake tube (A) from the master cylinder by loosening the tube flare nut.

Tightening torque:

18.6 ~ 22.6N.m (1.9 ~ 2.3kgf.m, 13.7 ~ 16.6lb-ft)

Remove the master cylinder (B) from the brake booster after loosening the mounting nuts (A).

Tightening torque:

9.8 ~ 15.6N.m (1.0 ~ 1.6kgf.m, 7.2 ~ 11.6lb-ft)

7.	Loosen the screw and then remove the reservior.

Installation

1.	Installation is the reverse of removal.

2.	After installation, bleed the brake system. (Refer to Brake System Bleeding - "Brake Sysem Bleeding") (Refer to ESP (Electronic Stability Program System) - "ESP System Bleeding")

Components 1. Reservoir cap2. Reservoir3. Pin4. Master cylinder ...

Components ...

Hyundai Sonata LF 2014-2019 Service Manual: Engine Coolant Temperature Sensor (ECTS) Description and Operation
Description Engine Coolant Temperature Sensor (ECTS) is located in the engine coolant passage of the cylinder head for detecting the engine coolant temperature. The ECTS uses a thermistor that changes resistance with the temperature. The electrical resistance of the ECTS decreases as the ...