Lexus Supports ASE CertificationPage 1 of 2Title:A/C BLOWER MOTOR MALFUNCTIONModels:’97 ES 300Technical ServiceInformation BulletinJuly 17, 1998AC002–98A Malfunction of the A/C blower motor may be caused by water intrusion into the blowerunit due to a poor seal between the windshield and the cowl top ventilation louver.EPT SealerCowl TopVentilatorLouverWater Entry & FlowDepicted by ArrowWindshieldGlassA–A’ CrossSectionAA’To prevent this, the amount of caulking sponge sealant (EPT Sealer) applied behind thecowl top ventilation louver has been increased. In addition, the shape of the louver hasbeen changed as shown in the illustrations below.EPT Sealer7 mmOld Style A–A’ CrossSectionNew Style A–A’ CrossSectionDeeperLouver10 mmLouverDepthS1997 model year ES 300s produced before JT8BF22G*W0096000 at Tsutsumi plantorbefore JT8BF22G*W5022600 at Kyushu plant.OLD PART NUMBERNEW PART NUMBERPART NAME55781–33140SameLower Cowl Top Ventilator, RH55782–33140SameLower Cowl Top Ventilator, LHHEATING & AIR CONDITIONINGIntroductionAffectedVehiclesPartsInformation
A/C BLOWER MOTOR MALFUNCTION– AC002–98July 17, 1998Page 2 of 2OP CODEDESCRIPTIONTIMEOPNT1T2EL8001R&R Blower Motor0.687103–440206683Applicable Warranty*:This repair is covered under the Lexus Basic Warranty. This warranty is in effect for48 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 complaint.If evidence of water intrusion into the blower motor housing is found such as rusting ofthe Blower Motor, perform the following operations:1.Replace the Blower Motor (Refer to the Repair Manual for procedure).2.Remove wiper arms and the hood to cowl top seal.3.Replace the cowl top ventilator louver with new part.4.Reinstall components in reverse order.WarrantyInformationRepairProcedure
Lexus Supports ASE CertificationPage 1 of 12Title:SENSOR INSPECTION FOR AIRCONDITIONING SYSTEMModels:’90 – Current All ModelsTechnical ServiceInformation BulletinDecember 16, 2004AC005-04This service bulletin contains inspection procedures to more precisely confirm properoperation of the following temperature sensors of the air conditioning system. Follow theprocedures in this service bulletin when inspecting these sensors. These contents will bereflected in future repair manuals.SRoom Temperature SensorSAmbient Temperature SensorSAir Duct SensorSEvaporator Temperature SensorSSolar SensorSRoom Humidity SensorSAll 1990 – Currentmodel year Lexusvehicles.OP CODEDESCRIPTIONTIMEOFPT1T2N/ANot Applicable to Warranty––––HEATING & AIR CONDITIONINGIntroductionApplicableVehiclesWarrantyInformation
SENSOR INSPECTION FOR AIR CONDITIONING SYSTEM– AC005-04December 16, 2004Page 2 of 121.Inspect Room Temperature Sensor.