Service bulletin T-SB-0049-16

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	10140637
Published by NHTSA	2018-06-11
Manufacturer's number	T-SB-0049-16
Manufacturer's date	2016-05-26
NHTSA component	ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; LANE DEPARTURE: BLIND SPOT DETECTION

NHTSA's summary

TSB: Some 2015 ? 2016 model year Avalon, Camry, Sienna, and Tundra vehicles equipped with Blind Spot Monitor may exhibit a Blind Spot Monitor Warning message with Diagnostic Trouble Code (DTC) C1AB2 Short to Ground in Outer Mirror Indicator (Master) or C1AB3 Short to Ground in Outer Mirror Indicator (Slave) stored. Follow the Repair Procedure in this bulletin to address this condition.

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

Driver assistance, Electrical system, Equipment and accessories, Labels and manuals, Blind spot detection

Trouble codes named

C1AB2, C1AB3

Vehicles listed
TOYOTA AVALON	2015, 2016
TOYOTA CAMRY	2015, 2016
TOYOTA CAMRY HYBRID	2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA SIENNA	2015, 2016
TOYOTA TUNDRA	2015, 2016

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-TT-0503-18	2018-12-03. Service bulletin. TT: When used in conjunction with the Repair Manual, these Blind Spot Monitor, Forward Recognition Camera, and Front Millimeter Wave Radar tips leverage SSTs and readily available tools to support target placement in varying shop environments.
T-TT-0503-18	2018-11-26. Service bulletin. TT: When used in conjunction with the Repair Manual, these Blind Spot Monitor, Forward Recognition Camera, and Front Millimeter Wave Radar tips leverage SSTs and readily available tools to support target placement in varying shop environments.