Two problems related to battery have been reported for the 2005 Acura TL. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Acura TL based on all problems reported for the 2005 TL.
The hands free link (hfl) modules have been failing resulting in a 200ma current drain. This results in the module shorting out and may subsequently result in a fire. I discovered this as a result of the battery draining to 5 volts overnight as well as a much high than normal temperature of the plastic cover under the hfl module. I removed the module according to Acura service bulletin 05-020 dated September 23, 2005.
2005 Acura Tl. . Battery needed replaced twice and vehicle only has 60k miles.