Canada - Body - Highway Speeds Wind Noise
BulletinTSB2643
Issue Date
April 17, 2009
Title
CROSSWIND TURBULENCE NOISE AT HIGHWAY SPEEDS
Component
BODY
Models
'07-'10 LS460; '08-'10 LS600h
INTRODUCTION:
Some customers may experience a buffeting type turbulence noise while driving in a heavy crosswind at highway speeds. Use the repair procedure below to address this condition.
NOTE
This TSB addresses unusual interior noises that can occur during certain driving conditions, by following the instructions in this TSB these noises may be reduced. Customers should be reminded that some level of wind turbulence noise, especially in crosswind conditions is present in all vehicles. A vehicle such as the LS460, which is one of the quietest vehicles on the market today, may tend to draw attention to normal wind turbulence or rushing sounds because of the relative absence of other ambient noises.
APPLICABILITY:
WARRANTY INFORMATION:
PARTS INFORMATION:
REQUIRED TOOLS & EQUIPMENT:
REPAIR PROCEDURE:
1. Installation of outside windshield molding deflector.
A. Remove left hand (LH) roof drip side molding from base of the windshield up to first clip of roof above windshield.
B. Remove lip seal from roof drip side molding and remove residual double sided tape from molding.
C. Apply primer (3M 06396) to clean surface once double sided tape is removed.
NOTE
Do NOT apply primer to painted surface of molding.
D. Install hook at the top side of the deflector onto the roof drip side molding (see Figure 2).
E. Hook middle part of deflector onto roof drip side molding (see Figure 2).
F. Bottom of deflector should contact tab on bottom of roof drip side molding (see Figure 2).
G. Temporarily secure deflector to roof drip side molding using masking tape and install roof drip side molding back on vehicle. Do not install clips at this time, this step is for lower gap adjustment only.
H. Check gap between lower deflector at base of windshield and NEW deflector attached to roof drip side molding. Adjust NEW deflector until no gap is seen at lower deflector contact (see Figure 3).
I. Once position of deflector has been adjusted so there is no gap at bottom contact point, remove deflector and molding assembly from vehicle and pull backing paper to stick double sided tape.
NOTE
Pull backing paper from bottom to top and apply pressure to ensure good adhesion.
J. Cut out paper template and attach to bottom inside portion of the roof drip side molding.
K. Drill a 4 mm hole according to template through the roof drip side molding and inside portion of the deflector piece (see Figure 4)
NOTE
Do NOT drill completely through the deflector.
L. Using a rivet tool, attach lower portion of deflector to roof drip side molding (see Figure 5).
M. Remove lower windshield deflector from vehicle. Clean and apply primer in the cross hatch area shown in Figure 6.
N. Install NEW clips on windshield clips on vehicle.
O. Install roof drip side molding and lower deflector onto the vehicle. Once lower deflector is in position, remove backing paper from double sided tape and permanently attach lower deflector to roof drip side molding deflector.
NOTE
Apply pressure to molding contact area to ensure no gap occurs between deflectors.
2. Install LH Wiper Arm.
A. Remove the nut, wiper arm, and blade.
B. Install NEW wiper arm and tighten nut. Hold down the wiper arm hinge with your hand while tightening the nut.
Torque: 22 N-m (224 kgf-cm, 16 ft-lbf)
NOTE
Wiper arm may contact deflector during operation if revised wiper arm is not installed.
3. Repeat repair procedure for right deflector. The LH wiper arm is replaced only. RH is not applicable.
4. Road test vehicle at highway speeds and operate wipers to ensure no contact between wiper blade and deflector.
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.