Some 204-2009 Mazda3 and Mazdaspeed3 vehicles with VINs lower than JM1BK****9*209750 (produced before August 7, 2008) may experience a chattering noise heard from the cowl grill when passing over a bump or driving on a rough road. The cause is a stick-slip occurring between the cowl grill and the windshield.
- Verify the concern.
- Remove the cowl panel. Refer to MS3 online or workshop manual section 09-10 COWL PANEL REMOVAL/INSTALLATION.
- Install or replace the pads on the hooks on the back of the cowl grill in 8 locations, with the service pads folding in and attaching to the hook.
- Install the cowl panel and verify the repair.
The new replacement pads are available under P/N L206-50-794 (pack of 8).