MAINTENANCE: BRAKE FLUID (for HV Model): REPLACEMENT; 2023 MY Corolla Corolla HV [09/2022

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM10000000264DQ
Model Year Start: 2023	Model: Corolla	Prod Date Range: [09/2022 - 11/2022]
Title: MAINTENANCE: BRAKE FLUID (for HV Model): REPLACEMENT; 2023 MY Corolla Corolla HV [09/2022 - 11/2022]

REPLACEMENT

CAUTION / NOTICE / HINT

NOTICE:

Move the shift lever to P and apply the parking brake before replacing the brake fluid.
Add brake fluid to keep the level between the MIN and MAX lines of the reservoir while replacing the brake fluid.
If brake fluid leaks onto any painted surface, immediately wash it off.
Do not operate the brake pedal with 2 or more breeder plugs open.
During fluid replacement, DTCs for pressure sensor malfunctions, etc. may be stored. After fluid replacement and if instructed in the procedures, clear the DTCs.

HINT:

Can replace the brake fluid using vacuum.
If any work is performed on the brake system or if air in the brake lines is suspected, bleed the air from the brake system.

PROCEDURE

1. START DIAGNOSTIC MODE

NOTICE:

As DTCs may be stored when performing the brake fluid replacement procedure, make sure to perform Start Diagnostic Mode before starting the procedure to prevent DTCs from being sent to the service center.
Make sure to keep the ignition switch ON until the brake fluid replacement is completed as diagnostic mode is canceled when the ignition switch is turned off.

(a) Perform Start Diagnostic Mode.

AUDIO AND VISUAL SYSTEM (for Single Knob Type): Click here
AUDIO AND VISUAL SYSTEM (for Knobless Radio and Display Receiver): Click here
NAVIGATION SYSTEM: Click here

2. REMOVE CENTER COWL TOP VENTILATOR LOUVER

(a) Disengage the 2 clips (A) as shown in the illustration.

*a	Clip (A)
*b	Clip (B)
	Remove in this Direction

(b) Disengage the clip (B) and separate the hood to cowl top seal from the cowl top ventilator louver sub-assembly.

(c) Disengage the 2 claws and 2 guides to remove the center cowl top ventilator louver from the cowl top ventilator louver sub-assembly.

3. REMOVE BRAKE MASTER CYLINDER RESERVOIR FILLER CAP ASSEMBLY

(a) Remove the brake master cylinder reservoir filler cap assembly.

4. FILL RESERVOIR WITH BRAKE FLUID

(a) Add brake fluid to the reservoir until the fluid level is between the MAX and MIN lines on the brake fluid reservoir.

Brake Fluid:

SAE J1703 or FMVSS No. 116 DOT3

SAE J1704 or FMVSS No. 116 DOT4

NOTICE:

Make sure that there is sufficient brake fluid in the reservoir.
Do not remove the filter from the brake master cylinder reservoir assembly and be sure to fill the brake master cylinder reservoir assembly with new brake fluid to avoid any potential contamination of the brake system. Contamination, for example by dirt particles or mineral oil, could lead to functional brake problems.

HINT:

The brake fluid bottle can be inverted and placed on the reservoir filler opening.

5. REPLACE BRAKE FLUID

NOTICE:

Make sure to keep the ignition switch ON until the brake fluid replacement is completed as diagnostic mode is canceled when the ignition switch is turned off.

(a) Remove the bleeder plug cap.

(b) Connect a vinyl tube to the bleeder plug.

NOTICE:

Add brake fluid to keep the level between the MIN and MAX lines of the reservoir while replacing the brake fluid.
Do not operate the brake pedal with 2 or more breeder plugs open.

(d) When fluid stops coming out, tighten the bleeder plug and release the brake pedal.*2

(e) Repeat steps *1 and *2 until new brake fluid comes out.

(f) Tighten the bleeder plug completely.

Torque:

8.3 N·m {85 kgf·cm, 73 in·lbf}

(g) Install the bleeder plug cap.

(h) Repeat the above steps to replace the brake fluid of the brake lines for each wheel.

6. INSPECT FOR BRAKE FLUID LEAK

7. ADJUST BRAKE FLUID LEVEL IN RESERVOIR

Click here

8. INSTALL BRAKE MASTER CYLINDER RESERVOIR FILLER CAP ASSEMBLY

(a) Install the brake master cylinder reservoir filler cap assembly.

9. INSTALL CENTER COWL TOP VENTILATOR LOUVER

(a) Engage the 2 guides and 2 claws to install the center cowl top ventilator louver to the cowl top ventilator louver sub-assembly.

(b) Engage the clip (B) and install the hood to cowl top seal to the cowl top ventilator louver sub-assembly.

*a	Clip (A)
*b	Clip (B)
	Install in this Direction

10. INSPECT BRAKE SYSTEM WARNING LIGHT

(a) Turn the ignition switch off.

(b) Turn the ignition switch to ON.

(c) With the ignition switch ON, depress the brake pedal for 1 second or more and confirm that the brake system warning light (yellow) in the meter is not illuminated.

11. CLEAR DTC

Click here