One problem related to transmission slip out of gear has been reported for the 2003 Acura CL. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Acura CL based on all problems reported for the 2003 CL.
I bought a used Acura and on the way home on the highway the car suddenly down shifted violently several times causing the car to skid sideways . I pulled over and the car would not shift out of 3rd gear. Eventully I got it to reset and it drove fine for 35 minutes until once again it locked up doing 65mph.