If required, have an authorized dealer check and change the transmission fluid at the correct service interval.   See   Scheduled Maintenance
The automatic transmission does not have a transmission fluid dipstick. Your transmission does not consume fluid.
An authorized dealer should check the fluid:
  • If the transmission is not working properly.
  • If you notice signs of fluid leakage.
Do not use supplemental transmission fluid additives, treatments or cleaning agents. The use of these materials may affect transmission operation and result in damage to internal transmission components.