Body - Knocking Noise From Front of Sunroof

NVH
NV001-08

Title:
KNOCKING NOISE FROM FRONT OF
SLIDING ROOF

Models:
'07 - '08 RX 350

January 23, 2008

Introduction
Some 2007 - 2008 model year RX 350 customers may complain of a knocking noise from the sliding roof (moon roof) above the driver's or passenger's head while driving. The noise is most noticeable at low vehicle speeds (approximately 5 mph [8 km/h] and up). Follow the repair procedures listed in this bulletin to address this condition.

Applicable Vehicles

^ 2007 - 2008 model year RX 350 vehicles produced BEFORE the Production Change Effective VINs shown below.





Production Change Information





Required Tools & Equipment





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 customers specific complaint.

Repair Procedure

1. Confirm that the noise is coming from the area near the front corner of the sliding roof (either left or right).

2. Record the radio station presets.





3. Remove the sliding roof housing sub-assembly.

Refer to the Technical Information System (TIS) 2007 or 2008 model year RX 350 Repair Manual Vehicle Exterior - Sliding Roof/Convertible - Sliding Roof: Sliding Roof Housing (for standard): Removal".

4. From the Interior Noise Kit cut two felt strips to the following dimensions:

Length: 300 mm (12.00 in.)

Width: 32 mm (1.25 in.)

Thickness: 0.5 mm ([0.02 in.] thinnest felt sheet material in the kit)





5. Temporarily peel back the backing paper at both ends and make a cut 2 inches (50.8 mm) away from the ends. Place the backing paper back on the felt.








6. Place the felt strip between the roof panel and the sliding roof mounting structure panel as shown in the illustrations.

NOTE:
Pull down on the moon roof mounting structure in the area of the front mounting stud to make space for the felt to slide into place.

IMPORTANT:
The felt strip is placed at an approximate 300 angle from the front edge of the sliding roof opening.

Once the felt is placed as close to the inner edge as possible peel oft the backing paper at the ends of the felt strip and stick the felt to the roof panel.

7. Perform the felt repair on both front corners of the sliding roof structure.

8. Install the sliding roof housing sub-assembly.

Refer to TIS 2007 or 2008 model year RX 350 Repair Manual Vehicle Exterior - Sliding Roof/Convertible - Sliding Roof: Sliding Roof Housing (for Standard): Installation".

NOTE:
Refer to TSB No. EL015-07 "Moon Roof Initialization Following Replacement or Adjustment" for more information.

9. Reset the radio presets and clock.

10. Test drive the vehicle to confirm the noise is gone.