One problem related to differential unit has been reported for the 2004 Acura TSX. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Acura TSX based on all problems reported for the 2004 TSX.
On my way to work, I started hearing a noise in the drivetrain. I checked the car over the next morning and took it to the dealership. They're telling me the carrier bearings and differential bearings are worn out in the manual transmission -- after only 54k miles?! they're not covering it under warranty. I'm being told it is not a "warranty item.