Kia Rio: Brake System / Master Cylinder

Kia Rio 2017-2023 YB Service Manual / Brake System / Brake System / Master Cylinder

Components and components location

Components

1. Brake booster assembly
2. Reservoir

3. Master cylinder

Repair procedures

Removal

1.	Remove the battery and battery tray. D 1.4 U2 TCI (Refer to Engine Electrical System - "Battery") G 1.0 T-GDI (Refer to Engine Electrical System - "Battery") G 1.2 MPI (Refer to Engine Electrical System - "Battery") G 1.4 MPI (Refer to Engine Electrical System - "Battery")

2.	Remove the air cleaner assembly. D 1.4 U2 TCI (Refer to Engine Mechanical System - "Air cleaner") G 1.0 T-GDI (Refer to Engine Mechanical System - "Air cleaner") G 1.2 MPI (Refer to Engine Mechanical System - "Air cleaner") G 1.4 MPI (Refer to Engine Mechanical System - "Air cleaner")

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

Do not spill brake fluid on the vehicle as it may damage the paint. If brake fluid comes in contact with the paint, wash off immediately with water.

Disconnect the brake fluid level switch connector (A), and disconnect the brake tube (B) from the master cylinder by loosening the tube flare nut.

Tightening torque:

ABS : 13.7 - 16.7 N·m (1.4 - 1.7 kgf·m, 10.1 - 12.3 lb·ft)

ESC : 18.6 - 22.6 N·m (1.9 - 2.3 kgf·m, 13.7 - 16.6 lb·ft)

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

Tightening torque:

9.8 - 15.7 N·m (1.0 - 1.6 kgf·m, 7.2 - 11.6 lb·ft)

Installation

1.	Install in the reverse order of removal.

2.	After installation, bleed the brake system. (Refer to Brake system - "Brake System")

❮Brake Booster

Components and components location Components 1. Brake booster assembly 2. Reservoir 3. Master cylinder Repair procedures Brake Booster Operating Test For simple checking of the brake booster operation, carry out the following tests.

Brake Line❯

Components and components location Components Repair procedures Removal 1. Disconnect the brake fluid level switch connector (A) and then remove the reservoir cap.

Other information:

Kia Rio 2017-2023 YB Service Manual: Hazard Lamp Switch

Repair procedures Inspection 1. Check for continuity between terminals. If the continuity is not as specified, replace the hazard lamp switch. No. Description No.

Kia Rio 2017-2023 YB Service Manual: Smart Key Diagnostic