Antitheft System - False Alarm Activation

T-SB-0171-11

October 28, 2011

Security Alarm False Activation

Service Category
Vehicle Interior

Section
Theft Deterrent/Keyless Entry

Market
USA





Applicability

Introduction

Some 2011 Siennas equipped with a factory theft deterrent system may exhibit a condition where the security horn is inappropriately triggered when the vehicle has not been disturbed. A revised hood latch assembly (with internal component switch) has been made available to address this condition.

Production Change Information





This TSB applies to all 2011 Sienna vehicles produced BEFORE the Production Change Effective VINs shown.





Parts Information





Warranty Information

Repair Procedure

1. Remove hood lock cable assembly.

NOTE

For all vehicles follow repair procedure for removal of the hood lock assembly "with Engine Hood Courtesy Switch".

2. Disconnect cable from the latch assembly but do NOT remove control cable from vehicle. Refer to the Technical Information System (TIS) applicable model and model year Repair Manual:

^ 2011 Sienna:
Vehicle Exterior - Door/Hatch - "Engine Hood/Door: Hood Lock Control Cable Assembly: Removal"

3. Install NEW hood lock assembly. Refer to TIS applicable model and model year Repair Manual:

^ 2011 Sienna:

Vehicle Exterior - Door/Hatch - "Engine Hood/Door: Hood Lock Control Cable Assembly: Installation"

NOTE

For complete diagnostic information regarding the Theft Deterrent System refer to TIS, applicable model and model year Repair Manual:

^ 2011 Sienna:
Vehicle Exterior - Theft Deterrent System/Keyless Entry - "Theft Deterrent: Theft Deterrent System (w/ Smart Key System): How to Proceed with Troubleshooting"

4. Confirm proper operation of security system.