Here is the TSB issued in 07 for the Cabin Filter Change...enjoy

yeah, always make sure that the door is UP. Do not force it to open in the slightest.

Also, this is the issue that p!ssed me off. Lexus techs broke/off tracked the door.

If you break that flapper when changing the HVAC filter, its a $1200 job to replace it.

Curious as to why this TSB was issued. Anybody know why?? Other TSB's give a brief explanation for the bulletin.

Judging by the note on the first page:

NOTE:
Improper installation of the air conditioning filter may cause damage to the HVAC
blower unit.

I can only guess that there must have been technicians and dealerships installing the filter incorrectly.

TSB's are not just directed at the owner, they are introduced when there is any change in a procedure in the service bay.
If the dealership runs their service areas like I have to run my laboratory, any procedure change is documented. In addition to the change, everyone that is qualified to perform said procedure is required to sign off that they have read and understood the procedural change.

steviej