While the precise location of the transmission varies from model to model, the gearbox of a Toyota is almost always on the underside of the vehicle below or behind the engine block. The location of other portions of the transmission varies with the drive system used by the car.
The location and design of a Toyota's transmission system depends primarily on which wheels the particular model of Toyota powers for driving. Most modern Toyotas use front-wheel drive, though some sportier models, such as the Toyota Supra, use for rear-wheel drive. Cars, such as the Toyota Celica GT-FOUR, and SUVs, such as the Toyota Highlander, use four-wheel drive systems.
Rear-wheel drive systems on front engine Toyotas are typically the simplest systems to locate and service. The gearbox of the car is located aft of the engine, with a long drive shaft running along the bottom of the vehicle to the rear wheels. The transmission is usually visible from the underside of the car as a cone that tapers to the drive shaft casing towards the rear of the Toyota. Most four-wheel drive systems are similar in appearance, though there is additional transmission hardware located between the front wheels. Front-wheel drive systems use a transaxle and differential to drive the front wheels, most of which is contained in the gearbox itself under the engine.