The location of a vehicle's transmission dipstick varies from model to model, and some vehicles do not even have a dipstick. AGCO Automotive Corporation recommends checking the vehicle's owners manual to determine the procedure to check the transmission fluid.
If the owners manual is not available, check the engine bay for a dipstick. Most manufacturers label or color-code the engine oil and transmission dipsticks for easy identification. If only one dipstick is present, it is possible the vehicle does not have a second one for the transmission. AGCO Automotive Corporation lists many newer, automatic transmissions from GM, Ford and Toyota as not having a dipstick. AutoMD also states that most manual transmissions do not have a dipstick, and fluid levels are checked through the fill hole on the transmission itself.