Canada - A/C - Excessive Dust From A/C Vents
BulletinTSB2577R
Issue Date
June 11, 2008
Title
EXCESSIVE DUST FROM HVAC VENTS
Component
HEAT AND AIR CONDITIONING
Models
'7-'8 ES350; '7-'9 RX350; '6-'8 RX400h
TSB REVISION NOTICE
- December 2, 2010: The introduction section has been updated.
- The OP Codes, labor times and OFP in the Warranty Information table have been updated.
Any previous printed versions of this service bulletin should be discarded.
INTRODUCTION:
Some customers may express concern about excessive dust or powder from the HVAC vents. A newly designed evaporator is available to help reduce this concern. Follow the procedures listed below to remove and replace the evaporator with a new service part.
APPLICABILITY:
WARRANTY INFORMATION:
PRODUCTION CHANGE INFORMATION:
This TSB applies to RX350 and RX400h vehicles produced BEFORE the Production Change Effective VINs shown below and to ALL 2007 - 2008 model year ES350 vehicles.
PARTS INFORMATION:
REQUIRED TOOLS & EQUIPMENT:
REPAIR PROCEDURE:
1. Confirm the condition.
Check for excessive white dust or powder on the top of the instrument panel and interior surfaces.
- If white dust or debris IS present, check the cabin air filter for damage and for other external sources of debris. Proceed to step 2 for replacement of the evaporator if all checks are OK.
- If white dust or debris is NOT present, there is no need to replace the evaporator.
2. Remove the evaporator.
Refer to the Repair Manual within E-TAS / TIS library:
- Division: Lexus
- Model: Applicable Model
- Year: Applicable Year
- Service Category: Vehicle Interior
- Section: Heating/Air Conditioning
- Keyword: Air Conditioning: Air Conditioning Unit: Removal and Disassembly
3. Clean the air conditioning, blower unit, HVAC vents, face ducts, and defroster nozzle.
A. Use a warm soap and water solution to properly clean out the air conditioning unit.
B. After cleaning, use compressed air to blow out all debris from the blower unit, HVAC vents, face ducts, and defroster nozzle.
NOTE
Be sure to clean all HVAC vents and passages BEFORE installing the new service part.
4. Install the NEW evaporator.
Refer to the Repair Manual within E-TAS / TIS library:
- Division: Lexus
- Model: Applicable Model
- Year: Applicable Year
- Service Category: Vehicle Interior
- Section: Heating/Air Conditioning
- Keyword: Air Conditioning: Air Conditioning Unit: Reassembly and Installation
5. After repair, confirm proper operation of the HVAC controls, and cooling and heater functions.
NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.