I got the dreaded "DVD Disc reading error please consult your dealer." message. I have owned this 2009 TSX since new. Dealer replaced navigation once under warranty and have had no problems until now. I have seen the numerous posts about cleaning the lens but could not find anything about how to remove the unit from the trunk of a TSX to be able to disassemble it to clean the lens. Does the unit simply unbolt from the bracket or do I have to remove the bracket first in order to get the unit out of the trunk?

 

Well I plunged in and removed the four bolts from the bracket in the trunk and learned two things: (1) the bolts are useless because the drive fits so snugly in the bracket the bolts are redundant and (2) the drive cannot be removed by sliding it out after removing the bolts. To remove the drive you have to remove the rear package shelf to get to the fasteners that hold the bracket itself. Never found a good explanation of how to do this on a 2nd generation TSX. The closest posts and videos I found involved Honda Accords of the same vintage or other Acura models. Since a 2009 navigation system even with the 2020 update disc looks pretty primitive by today's standards, the work involved seemed unappealing. In a nutshell you have to remove the entire back seat, side bolsters and a few more trim pieces to get that package shelf out. Then you have to disassemble the player to try and clean it. I did not want to tackle this, especially in the winter with no garage. So I tried a Hail Mary pass. I went on Amazon and purchased "Clean Dr" laser lens cleaner for Car Audio & Video. Ran the cleaning disc through three times and then booted the navigation system up. Problem solved! The disc cost me about $11 on Amazon. I chose that product based on one review that reported success with cleaning a car navigation disc player. The navigation system has been successfully booting up for weeks now. I reinstalled the four bolts holding the player to the bracket and was delighted that I did not have to tear out the back seat as well as the player itself to restore navigation.

 

Well for this, I simply took off the 4 bolts holding the DVD unit to the mounting bracket attached in the photo here. Then I reached in the back around the wiring connections and pushed the unit slightly forward towards me. I then got into the trunk and disconnected the wires one at a time (a little tricky but it got the job done). I could then pull it out. The other option is to remove trim at the back window inside the car and undo the bolts to the mounting bracket (black). I hope this helps.

 

OP, no need for all of that and this is what I did also. I folded the back seats down and accessed the wiring harnesses that way, as they were a little tough to remove since they were in place for so many years. I took the DVD unit apart and found that the whole spinning wheel assembly had fallen apart and was toast so I do not have Navi anymore. I don't miss it that much since in today's world it's pretty useless but the part that sucks is I learned the Navi is tied into many of the head unit's basic functionality and I can no longer change the colors, update the clock (which of course has the dreaded Honda problem so keeps going from 1-2 hours off), etc.