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Service bulletins for the 2004 Toyota PRIUS

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

226 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Brakes are shown. Show all

Bulletins, newest first
TTT0636202022-06-21. Service bulletin. BACK OVER PREVENTION; SERVICE BRAKES, HYDRAULIC. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions
T-SB-0014-222022-04-18. Service bulletin. PARKING BRAKE. TSB: This Service Bulletin includes procedures to replace damaged or loose front carpet floor retainer(s) without replacing the carpet assembly. Follow the Repair Procedure in this bulletin to replace the loose or damaged carpet floor retainer(s).
T-TT-0636-20 Rev2021-04-19. Service bulletin. BACK OVER PREVENTION; SERVICE BRAKES. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.
T-TT-0636-202021-02-16. Service bulletin. BACK OVER PREVENTION; SERVICE BRAKES. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.
T-TT-0636-202021-02-01. Service bulletin. SERVICE BRAKES, HYDRAULIC. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.
ZG1_Toyota POL162018-07-16. Service bulletin. SERVICE BRAKES. Warranty Policy Bulletin: Toyota has received some reports where various brake system related warning lamps illuminate due to internal malfunctions of the Brake Actuator Assembly.
T-SB-0032-162018-07-02. Service bulletin. PARKING BRAKE:DRIVELINE:HYDRAULIC:ACTUATOR; SERVICE BRAKES, HYDRAULIC:FLUID; SERVICE BRAKES. TSB: REVISION NOTICE: April 18, 2017 Rev1: G458The Parts Information and Required Tools and Equipment sections have been updated. Some 2004 ? 2009 model year Prius and 2006 ? 2007 model year Highlander HV vehicles may exhibit a condition where the brake, ABS, and/or TRAC warning light(s) are ON and/or a Check VSC message is displayed. Diagnostic Trouble Code (DTC) C1391, C1252, C1253 or C1256 may be stored. This condition may be caused by a small internal brake fluid leak inside the brake actuator.
ZG1_Warranty Pol2018-04-23. Service bulletin. SERVICE BRAKES. Warranty Policy Bulletin (POL16-03): Toyota has received some reports where various brake system related warning lamps illuminate due to internal malfunctions of the Brake Actuator Assembly.
ZG1_Dealer email2018-04-23. Service bulletin. SERVICE BRAKES. Dealer email: In these vehicles, Toyota has received some reports where various brake system related warning lamps illuminate due to internal malfunctions of the Brake Actuator assembly. Although the Brake Actuator Assembly is covered by Toyota?s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers? ownership experience. Toyota is now extending the warranty coverage for repairs related to internal malfunctions of the Brake Actuator Assembly.
ZG1_Region Lette2018-04-23. Service bulletin. SERVICE BRAKES. Region Letter: In these vehicles, Toyota has received some reports where various brake system related warning lamps illuminate due to internal malfunctions of the Brake Actuator assembly. Although the Brake Actuator Assembly is covered by Toyota?s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers? ownership experience. Toyota is now extending the warranty coverage for repairs related to internal malfunctions of the Brake Actuator Assembly.
ZG1_Region email2018-04-23. Service bulletin. SERVICE BRAKES. Region email: In these vehicles, Toyota has received some reports where various brake system related warning lamps illuminate due to internal malfunctions of the Brake Actuator assembly. Although the Brake Actuator Assembly is covered by Toyota?s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers? ownership experience. Toyota is now extending the warranty coverage for repairs related to internal malfunctions of the Brake Actuator Assembly.
T-SB-0032-162018-04-23. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK. TSB: Some 2004 ? 2009 model year Prius and 2006 ? 2007 Highlander HV vehicles may exhibit a condition where the brake, ABS, and/or TRAC warning light(s) are ON and/or a Check VSC message is displayed. Diagnostic Trouble Code (DTC) C1391, C1252, C1253, or C1256 may be stored. This condition may be caused by a small internal brake fluid leak inside the brake actuator. Follow the Repair Procedure in this bulletin to address this condition.
T-SB-0174-12 Rev2018-04-02. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE. TSB: Some 2004 ? 2009 model year Prius vehicles may exhibit a MIL ?ON? and brake warning lights (ABS/VSC) illuminated in the instrument panel with Diagnostic Trouble Code (DTC) C1247 (Stroke Sensor Malfunction) stored in the ABS/VSC Electronic Control Unit (ECU). This DTC may set as a result of an overly sensitive monitoring logic without any other ABS/VSC system issue. Follow the Repair Procedure in this bulletin to properly diagnose the system and, if necessary, replace the ABS/VSC ECU with an ECU containing the updated monitoring logic.
T-SB-0141-132018-04-02. Service bulletin. EQUIPMENT; PARKING BRAKE. A new Special Service Tool (SST 09709-00002) has been introduced to aid in the inspection procedure for certain vehicles equipped with a floor pedal-type parking brake system. This bulletin references the correct method for installing the Brake Pedal Force Gauge. Refer to the appropriate Repair Manual for parking brake pedal travel inspection and adjustment specification.
ZG1_Warranty Pol2017-08-14. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE. Warranty Policy Bulletin (POL16-03): Toyota has received some reports where various brake system related warning lamps illuminate due to internal malfunctions of the Brake Actuator Assembly.
TSB-0174-122012-12-13. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE; SERVICE BRAKES, AIR:ANTILOCK; SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE; SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT. TOYOTA: INSTRUMENT PANEL ILLUMINATES WITH MALFUNCTION OF ABS/VSC, MIL ON AND BRAKE WARNING LIGHTS, RESULTING IN OVERLY SENSITIVE MONITORING LOGIC WITHOUT ANY ABS/VSC SYSTEM ISSUE. MODELS 2007-2011 CAMRY; 2004-2009 PRIUS. *PE UPDATED 8/26/14. *PE
4497C2005-07-29. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE. REPAIR MANUAL CORRECTION FOR THE SIDE CONTROL ECU ASSEMBLY (BRAKE). 00400-RM107-5U3. *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.