A/C - Excessive Dust Or Powder From Vents

L-SB-0032-08

June 5, 2008

Excessive Dust from HVAC Vents

Service Category
Vehicle Interior

Section
Heating/Air Conditioning

Market
USA





Applicability

Introduction
Some customers may complain of excessive dust or powder from the HVAC vents. The evaporator coating has been improved to help reduce this concern. Follow the procedures listed below to remove and replace the evaporator with a new service part.





Warranty Information

APPLICABLE WARRANTY

^ 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.

Production Change Information





This TSIB applies to RX 350 and RX 400h vehicles produced BEFORE the Production Change Effective VINs shown below and to ALL 2007 - 2008 model year ES 350 vehicles.





Parts Information





Required Tools & Equipment

Additional refrigerant service equipment may be ordered by calling Lexus Approved Dealer 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 Technical Information System (TIS) applicable model and model year Repair Manual:

3. Clean the air conditioning unit 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 the air conditioning unit 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 TIS applicable model and model year Repair Manual:

5. After repair confirm proper operation of the HVAC controls and cooling and heater functions.