MPS6

Overview

Note! Since the illustrations in this service information are used for different model years and/or model versions, some variation may occur. However, the essential information is always correct.




This Design and Function describes the transmission's mechanical parts.
The transmission is a 6-speed electronically controlled transmission, so-called Powershift. It has the same function as an automatic transmission but is more similar to a manual transmission.
The transmission is of a design with three shafts and two clutches (wet double clutch) but no clutch pedal. Electronics and hydraulics control the clutches just like in a conventional automatic transmission.
The transmission features a split (divided) input shaft with a clutch each. The clutches work independently of each other.
The transmission has 4 gearshift forks which are controlled by the Transmission control module (TCM) via solenoids. Electronics and hydraulics control the clutches via the Transmission control module (TCM) or via manual shifting in the same way as in a conventional automatic transmission. In case of manual shifting, the driver handles gearshifting.
The gears are pre-selected, that is, one clutch makes sure that the current gear ends up in the correct position at the same time as the other clutch prepares the next gear. This set-up means that the power transfer from the engine to the transmission is not interrupted when shifting.
Shifting takes place under load, thus a permanent power transfer can be maintained, which is the meaning of Powershift.
The gearshift lever is of the same type as for conventional automatic transmissions and has positions P, R, N, D, and M.
The transmission fluid is a high-quality synthetic oil which is unique for this type of transmission. For transmission oil change interval, see Service program.
The transmission is intended to be a part of a transverse drivetrain with front-wheel drive. The transmission weighs 91 kg with oil and has a maximum torque of 450 Nm.
The Transmission control module (TCM), solenoids, and sensors are integrated in the transmission. For more information on Transmission control module (TCM), its function and associated sensors, see Design and Function, Transmission control module (TCM).