FixVault

DTC 199: ACC unit Programming Error

NOTE:
  • This DTC is indicated when an ACC unit update is not complete.
  • Do not press the engine start/stop button to select the OFF mode while updating the ACC unit. If you press the engine start/stop button to select the OFF mode before completion, the ACC unit will be damaged.
  1. Clear the DTCs with the HDS (see HOW TO CLEAR DTCS  ).
  2. Do the ACC unit update (see ACC UNIT UPDATE  ).
  3. Check for DTCs with the HDS (see HOW TO CLEAR DTCS  ).

    Is DTC 199 indicated? 

    YES  -Replace the ACC unit (see ADAPTIVE CRUISE CONTROL (ACC) UNIT REMOVAL/INSTALLATION  ), then recheck.

    NO  -The troubleshooting is complete.