Service bulletin ZG1_Toyota POL16

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)
Type	Service bulletin
NHTSA id	10142888
Published by NHTSA	2018-07-16
Manufacturer's number	ZG1_Toyota POL16
Manufacturer's date	2018-06-20
NHTSA component	SERVICE BRAKES

NHTSA's summary

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.

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

Vehicles listed
TOYOTA HIGHLANDER	2006, 2007
TOYOTA PRIUS	2004, 2005, 2006, 2007, 2008, 2009

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

Recalls for the same vehicles and component
2010361	2010-10-21. Brakes
10V499000	2010-10-21. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
TTT063620	2022-06-21. Service bulletin. 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-0014-22	2022-04-18. Service bulletin. 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 Rev	2021-04-19. Service bulletin. 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-0636-20	2021-02-16. Service bulletin. 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-0636-20	2021-02-01. Service bulletin. 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-0032-16	2018-07-02. Service bulletin. 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 Pol	2018-04-23. Service bulletin. 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 email	2018-04-23. Service bulletin. 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 Lette	2018-04-23. Service bulletin. 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 email	2018-04-23. Service bulletin. 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.