Toyota Avalon rear sunshade hangs during operation, replaced sunshade on Toyota Avalon

Some Toyota Avalon owners report experiencing issues with the rear sunshade assembly, particularly in models from 2005 to 2014, where the sunshade may become stuck in the 'up' position, obstructing rear visibility, especially at night. Relay failures, as noted in TSB-0157-14, are also common, causing the sunshade to rise without any switch input. Additionally, some owners have reported grinding noises and operational problems due to broken teeth on the small transfer gear of the sunshade motor assembly. Repairing or replacing the rear sunshade can be costly, leading some owners to opt out of using it altogether. Concerns about disassembling and reassembling the sunshade, with fears of damaging surrounding parts, have also been mentioned. While some users have found temporary solutions, such as manually pushing the sunshade down on hot days, others have successfully troubleshot the motor assembly to identify and repair specific issues. Consulting with a professional mechanic familiar with these problems may be beneficial for effective resolution.