A loud rattle type noise may be noted from the engine after a cold start. This can be caused by a faulty valve timing control actuator. Replacing the failed actuator will commonly correct this noise issue.
Car problem reports
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Most reported 2012 Acura TSX problems
A faulty tire pressure sensor may cause illumination of the low tire warning light even if tire pressure are correct. If this condition occurs the affected sensor(s) should be replaced.
The fuel door may not open correctly at times. This may be caused by a lack of clearance between the fuel door and the release latch. The common repair is to slightly trim the top of the fuel door lock tap.