Removal & Installation

WARNING: This page is about a different car, the 2003 Toyota Prius and 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before starting work, ensure ignition switch is OFF and depress brake pedal more than 40 times.

Draw out brake fluid with syringe. Remove outer front cowl top panel. Remove reservoir, brake actuator hose, brake reservoir hose No. 1 & No. 2, and reservoir bracket. See Fig 1.
Disconnect fluid level warning switch connector from the reservoir. Remove 2 bolts from reservoir. Disconnect 3 hoses from the reservoir and remove. Disconnect 3 hoses from the reservoir bracket clamp. Remove 4 bolts and reservoir bracket.
Disconnect liquid and suction tubes. Remove the nut and release liquid and suction tubes. See Fig 2. Using tool (09023-00100) and spanner, disconnect the right front brake line from the flexible hose and 2 way. See Fig 3. Using same tool, disconnect the brake line from the HBB assembly. See Fig 4.
Disconnect 2 connectors. To remove HBB assembly, remove the clamp, clamp bracket and 3 bolts. See Fig 5. Release the wire harness to remove the HBB assembly. See Fig 6.
Remove the 3 installation bolts and nut. Remove HBB assembly. Remove 2 bolts and sub-bracket. See Fig 7.

Fig 1: Removing & Installing Hydraulic Brake Booster (Prius)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Disconnecting Liquid & Suction Tubes (Prius)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Removing Right Front Brake Line (Prius)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Disconnecting Brake Line From Hydraulic Brake Booster Assembly (Prius)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 5: Removing Clamps From Hydraulic Brake Booster Assembly (Prius)

Fig 6: Releasing Wire Harness To Hydraulic Brake Booster Assembly (Prius)

Fig 7: Removing Hydraulic Brake Booster Assembly (Prius)