Bench Testing: Brushes
WARNING: This page is about a different car, the 2001 Lexus RX 300, 2001 Lexus LS 430, 2001 Lexus IS 300, and 2001 Lexus GS 430. However, it is still accessible from the selected car via links, so may be relevant.
Check brushes for cracks and a minimum exposed length of .059" (1.5 mm). Replace complete brush holder assembly if brushes are damaged or worn.