Canada - Body - Moonroof, Knocking Noise

Bulletin
2406

Issue Date
May 21, 2007

Title
KNOCKING NOISE FROM FRONT OF MOON ROOF

Component
BODY COMPONENT

Models
'07 ES 350

TSB REVISION NOTICE:
- August 15, 2007: The OFP in the Warranty Information table has been updated.
Previous versions of this TSB should be discarded.

INTRODUCTION:

Some 2007 model year ES350 customers may complain of a knocking noise from the roof above the driver or passenger's head while driving. The noise is noticeable at low vehicle speeds (approximately 8 kph and up).This complaint only affects vehicles equipped with the standard moon roof (NOT the panorama roof).

The condition may be present or worse when the weather is cold and may not be present once the interior of the vehicle warms up.

Use the repair procedure below to improve this condition.

APPLICABLE VEHICLES:
- 2007 model year ES 350 vehicles produced BEFORE the Production Change Effective VINs shown below.






PRODUCTION CHANGE INFORMATION:






WARRANTY INFORMATION:

REPAIR PROCEDURE:

1. Confirm that the noise is coming from the area near the front corner of the moon roof (either left or right).
2. Record the radio station presets.






3. Remove the sliding roof housing sub-assembly.

Refer to the Repair Manual within E-TAS / TIS library:
- Division: Lexus
- Model: ES350
- Year: 2007
- Service Category: Vehicle Exterior
- Section: Sliding Roof/Convertible
- Keyword: Sliding Roof: Sliding Roof Housing (for Standard): Removal

4. From the Interior Noise Kit, make 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 moon roof mounting structure panel as shown in the picture below.

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 30° angle from the front edge of the moon roof opening.






Once the felt is placed as close to the inner edge as possible, peel off 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 moon roof structure.
8. Install the sliding roof housing sub-assembly.

Refer to the Repair Manual within E-TAS / TIS library:
- Division: Lexus
- Model: ES350
- Year: 2007
- Service Category: Vehicle Exterior
- Section: Sliding Roof/Convertible
- Keyword: Sliding Roof: Sliding Roof Housing (for Standard): Installation

9. Reset the radio presets and clock.
10. Test drive vehicle to confirm noise is gone.

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.