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Service bulletin ZG1_Warranty Pol

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10111629
Published by NHTSA2017-08-14
Manufacturer's numberZG1_Warranty Pol
Manufacturer's date2016-08-23
NHTSA componentSERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE

NHTSA's summary

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.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes, Anti-lock brakes

Vehicles listed
TOYOTA HIGHLANDER2006, 2007
TOYOTA PRIUS2004, 2005, 2006, 2007, 2008, 2009

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
T-SB-0032-162018-04-23. Service bulletin. 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. 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.
TSB-0174-122012-12-13. Service bulletin. 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
4500C2005-07-29. Service bulletin. REPAIR MANUAL CORRECTION FOR THE SKID CONTROL ECU ASSEMBLY (BRAKE). 00400-RM113-0U3. *TT
4497C2005-07-29. Service bulletin. REPAIR MANUAL CORRECTION FOR THE SIDE CONTROL ECU ASSEMBLY (BRAKE). 00400-RM107-5U3. *TT