Keyless Starting - Intermittent No Crank/No Start
L-SB-0161-08Rev1
November 11, 2008
Smart Key Intermittent No Crank/No Start
Service Category
Vehicle Interior
Section
Theft Deterrent/Keyless Entry
Market
USA
Applicability
^ June 4, 2008 Rev1:
^ Applicability has been updated to include 2006-2008 IS 250 model years.
Any previous printed versions of this service bulletin should be discarded.
Introduction
Some customers may experience a no crank condition or a start and immediate stall condition when starting the engine using the "Push Start" switch. A new "Push Start" switch is now available to address this concern.
Required Tools & Equipment
Additional SSTs may be ordered by calling 1-800-933-8335.
Warranty Information
^ This repair is covered under the Lexus Comprehensive Warranty. This warranty is in effect for 48 months or 50,000 miles, whichever occurs first, from the vehicle's in-service date.
^ Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Parts Information
Production Change Information
This TSIB applies to vehicles produced BEFORE the Production Change Effective VINs shown.
Overview
Repair Procedure
NOTE
In the repair manuals the push start switch is referenced to as the "Power Switch" when installed in Hybrid vehicles and the "Engine Switch" when installed in all other vehicles.
This TSIB details the replacement of the push start switch on vehicles equipped with Smart Key with one of two specific concerns both of which are intermittent issues that can occur only while starting the engine.
^ No crank and no start concern.
^ Engine cranks starts and then immediately stalls.
NOTE
Before considering replacement of the push start switch please verify the following conditions are normal:
1. Vehicle battery is fully charged.
2. Key battery voltages are within specification.
3. No other repairs have been performed or parts replaced on the smart key system causing the system to become completely inoperative.
4. The M.I.L. (Check Engine Light) is off with the engine running. If the M.I.L. is ON, repair and clear any related codes before performing this TSIB.
Detailed removal and installation instructions of the engine / power switch including systems requiring initialization are found in the Technical Information System (TIS) applicable Repair Manual:
2008 LS 600h:
^ Engine/Hybrid System - Starting - "Rower Switch: and 2007 LS 460 & 460L:
^ Engine/Hybrid System - Starting - "Engine Switch: and 2008 LS 460 & 460L:
^ Engine/Hybrid System - Starting - "Engine Switch: and 2007 GS 350:
^ Engine/Hybrid System - Starting - "Engine Switch: and 2008 GS 350:
^ Engine/Hybrid System - Starting - "Engine Switch: and 2007 GS 450h:
^ Engine/Hybrid System - Starting - "Power Switch: and 2008 GS 450h:
^ Power Source/Network - Power Distribution - "Power Switch: and 2006 IS 250:
^ Engine/Hybrid System - Starting - "Engine Switch: and 2007 IS 250:
^ Engine/Hybrid System - Starting - "Engine Switch: and 2008 IS 250:
^ Engine/Hybrid System - Starting - "Engine Switch: and 2006 IS 350:
^ Engine/Hybrid System - Starting - "Engine Switch: and 2007 IS 350:
^ Engine/Hybrid System - Starting - "Engine Switch: and 2008 IS 350:
^ Engine/Hybrid System - Starting - "Engine Switch: and 2007 ES 350:
^ Engine/Hybrid System - Starting - "Engine Switch: and 2008 ES 350:
^ Power Source/Network - Power Distribution - "Engine Switch: and After replacing the "Push Start Switch" verify normal Smart Key operation.