Locate the cruise control switch on your Acura TL. This is usually located on the steering wheel or the dashboard.
Check the cruise control switch for any damage or wear. If the switch is damaged, you will need to replace it.
Inspect the cruise control cables for any damage or disconnections. If the cables are damaged, you will need to replace them.
Check the cruise control fuse. The fuse for the cruise control system is located in the fuse box in your Acura TL. Check to make sure the fuse is not blown.
Check the battery. If your battery is low, the cruise control system will not work.
Start the engine and turn on the ignition.
Press the "ON" button or switch for the cruise control system. The cruise control indicator should light up on your dashboard.
Test the cruise control system by driving at a steady speed. The cruise control should maintain your set speed.
If the cruise control system does not work, you may need to take your Acura TL to a qualified mechanic for further diagnostics.