MultiMode manual transmission: Difference between revisions

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{{short description|Type of automated manual transmission}}

'''Multimode Manual Transmission''' ('''MMT''' or '''M/M''', also ''' Multimode Transmission''')<ref>http://www.toyota.co.uk/bv/About_Toyota/glossary/MMT.html</ref> is a type of [[sequential manual transmission]] offered by [[Toyota]]. It uses a traditional manual [[gearbox]] with an electronically controlled [[clutch]]. Multimode Manual Transmission is available in the [[Aygo]], [[Yaris]] and [[Auris]] in [[Europe]], and should not be confused with Multimode Automatic Transmission, which is offered in the North American market by Toyota.

A '''MultimodeMultiMode Manualmanual Transmissiontransmission''' ('''MMT''' or '''M/M''',<ref>{{cite alsoweb '''|url=http://www.toyota.co.uk/bv/About_Toyota/glossary/MMT.html Multimode|title=MMT Transmission''')<ref>- MultiMode manual transmission |___location=UK |publisher=Toyota |archive-url=https://web.archive.org/web/20120413143105/http://www.toyota.co.uk/bv/About_Toyota/glossary/MMT.html |archive-date=2012-04-13}}</ref>) is a type of [[sequentialautomated manual transmission]] offered by [[Toyota]]. It uses a traditional manual [[gearbox]] with an electronicallya computer-controlled [[clutch]] actuated by permanent magnet motors.<ref>{{cite web|url=https://www.techtips.ie/Blue-Print/toyota-multi-mode-transmission-mmt.pdf|title=Toyota Multi-Mode Transmission|website=techtips.ie|accessdate=2022-10-11|format=PDF}}</ref> Multimode Manual Transmission is available in the [[Aygo]], [[Toyota Yaris|Yaris]], [[Toyota Corolla|Corolla]], [[Toyota Corolla Verso|Corolla Verso]], [[Toyota Mark X|Mark X]] and [[Toyota Auris|Auris]] in [[Europe]], and should not be confused with Multimode Automatic Transmission, which is offered in the North American market by Toyota.

==Operation==

The Multimode Manual Transmission has the following gears: R, N, E, M+, M-.

* '''R''': R is the reverse gear. It is similar to R in both traditional manual and in full automatic cars.

== Operation ==

The Multimode Manual Transmission has the following gears: R, N, E, M+, M-M−.

* '''R''': R is the reverse gear. It is similar to R in both traditional manual and in fullfully automatic cars.

* '''N''': N is the neutral gear. It is similar to N in both traditional manual and full automatic.

* '''E''': E ("Easy") is the functional equivalent of D in a full automatic. As the gearbox in a MMT car is a manual gearbox, instead of one with a [[torque converter]] (as in a traditional automatic), gear changes are noticeable. The [[accelerator (car)|accelerator]] should be eased off, slightly, when gear changes tooccur. produceThis facilitates a smooth ridetransition, between gears, and allows for smooth acceleration.

* '''M+''': Up-shifts a gear in sequential fashion, from M1 to M5 (M6 in 6-speed MMT cars).

* '''E''': E ("Easy") is the functional equivalent of D in a full automatic. As the gearbox in a MMT car is a manual gearbox, instead of one with a [[torque converter]] as in a traditional automatic, gear changes are noticeable. The [[accelerator]] should be eased off slightly when gear changes to produce a smooth ride.

* '''M-''' : Downshifts a gear in sequential fashion, from M5 (M6 in 6-speed MMT cars) to M1.

== Differences from an automatic car ==

* '''M+''': Up-shifts a gear in sequential fashion, from M1 to M5 (M6 in 6-speed MMT cars).

==Differences from an automatic car==

A Multimode manual car has a [[clutch]] instead of a torque converter. As such, gear changes are noticeable, and the car rolls backwards when on an up-sloping incline.

* '''Creeping''': A Multimode Manual Car creeps forward when the [[brake pedal]] is released and accelerator is not depressed, like an automatic car. This is achieved via partially engaging and slipping the clutch.

* '''Moving off from an incline''': A MMT car rolls backwards when on an up-sloping incline, unlike an automatic car. To move off from an up-sloping incline, apply handbrake before depressing the accelerator slightly. Do not hold the car on an incline by depressing the accelerator pedal, as the slipping clutch will overheat and lead to clutch damage.

* '''Moving off from an inclineParking''': AUnlike an automatic car, the P gear is absent in a MMT car. rollsThe backwardscar whenshould be parked in the following fashion. onIn an up-sloping incline, unlikeput anthe automaticgear car.to ToM1, moveor E, apply handbrake, and switch off fromthe anengine. upIn a down-sloppingsloping incline, put the gear to R, apply handbrake, beforeand depressingswitch off the accelerator slightlyengine. DoOn notlevel holdground, put the cargear onto anR, inclineapply byhandbrake, depressingand theswitch acceleratoroff pedal,the asengine. theR slippingor clutchE/M1 willsubstitute overheatthe andP leadfunction toin clutcha damagefull automatic.

* '''Parking''': Unlike an automatic car, the P gear is absent in a MMT car. The car should be parked in the following fashion. In an up-slopping incline, put the gear to M1, or E, apply handbrake, and switch off the engine. In a down-slopping incline, put the gear to R, apply handbrake, and switch off the engine. On level ground, put the gear to R, apply handbrake, and switch off the engine. R or E/M1 substitute the P function in a full automatic.

* '''Moving off from Park''': The engine can only be started with the gear in N. To start, switch on the car to ON position (this releases the gear lock), depress brake pedal, put the gear to N (from either R or E/M1), and switch on the engine.

* '''L/1 and 2 gears in a full automatic''': The MMT does not provide L/1 and 2 gears as in a full automatic. One action of the MMT system is that it detects the gradient of the slope that the car is situated in. On a down-sloppingsloping incline and if the brake pedal is depressed, it automatically selects a lower gear to produce engine brake, which has the equivalent effect of L and 2 gears in a full automatic. L and 2 can also be substituted with E1 and E2 (not available in [[Aygo]]) or M1 and M2 gears in a MMT car. To select E1 or E2, put the gear to E, and use + and - pedal flaps on the steering wheel to override the computer selection. E will change to E1/E2/E3/E4/E5/E6, depending on the gear selected. Downshift to E1 or E2 as appropriate to simulate L and 2 gears in a full automatic. To select M1 or M2, put the gear to M, and use M-M− gear to downshift the gear to M1 or M2.

* '''Kick-down''': In E mode, the [[Automatic_transmissionAutomatic transmission#Manually_controlled_automatic_transmissionsManually controlled automatic transmissions|kick-down function]] in a full automatic can be similarly activated in an MMT car. Additionally, the kick-down function can be manually activated using the - pedal flap on the [[steering wheel]] in E mode. This overrides the computer setting and E changes to E1/E2/E3/E4/E5/E6. To stop the [[manual override]] under E mode, pull and hold the + flap on the steering wheel, until the E1/E2/E3/E4/E5/E6 changes back to E. Alternatively, wait for the next computer activated gear change.

* '''L/1 and 2 gears in a full automatic''': The MMT does not provide L/1 and 2 gears as in a full automatic. One action of the MMT system is that it detects the gradient of the slope that the car is situated in. On a down-slopping incline and if the brake pedal is depressed, it automatically selects a lower gear to produce engine brake, which has the equivalent effect of L and 2 gears in a full automatic. L and 2 can also be substituted with E1 and E2 (not available in [[Aygo]]) or M1 and M2 gears in a MMT car. To select E1 or E2, put the gear to E, and use + and - pedal flaps on the steering wheel to override the computer selection. E will change to E1/E2/E3/E4/E5/E6, depending on the gear selected. Downshift to E1 or E2 as appropriate to simulate L and 2 gears in a full automatic. To select M1 or M2, put the gear to M, and use M- gear to downshift the gear to M1 or M2.

* '''Reverse''': The car reverses as in an automatic car. To reverse, depress brake pedal, and change the gear to R. Gradually lift off the brake pedal to allow the car to creep backwards. On a down-sloppingsloping incline, the creep function, simulated using the slipping clutch, is not sufficient to prevent the car from rolling forward. In this case, the car must not be held still using the accelerator pedal, as the excessive clutch slipping will lead to clutch damage. Handbrake should be instead applied, and the accelerator pedal should be depressdepressed slightly.

* '''Kick-down''': In E mode, the [[Automatic_transmission#Manually_controlled_automatic_transmissions|kick-down function]] in a full automatic can be similarly activated in an MMT car. Additionally, the kick-down function can be manually activated using the - pedal flap on the [[steering wheel]] in E mode. This overrides the computer setting and E changes to E1/E2/E3/E4/E5/E6. To stop the [[manual override]] under E mode, pull and hold the + flap on the steering wheel, until the E1/E2/E3/E4/E5/E6 changes back to E. Alternatively, wait for the next computer activated gear change.

* '''Reverse''': The car reverses as in an automatic car. To reverse, depress brake pedal, and change the gear to R. Gradually lift off the brake pedal to allow the car to creep backwards. On a down-slopping incline, the creep function, simulated using the slipping clutch, is not sufficient to prevent the car from rolling forward. In this case, the car must not be held still using the accelerator pedal, as the excessive clutch slipping will lead to clutch damage. Handbrake should be instead applied, and the accelerator pedal should be depress slightly.

* '''Gear change''': The gear change in MMT is noticeable, unlike in a full automatic car. Under E gear, the car will automatically change the gear depending on speed and [[gradient]] information. It is recommended that the accelerator pedal should be momentarily lifted off during gear change. A constant throttle can also be maintained on the accelerator, and gear change can still occur, although the car will feel noticeably more jerky during gear change than in a full automatic.

== Operation under E mode ==

The E mode functions as the "D" gearposition in a fullconventional automatic car. Via the on boardonboard computer and electronic clutch, the car automatically selects the appropriate gear based on speed and gradient information. An MMT car limits the highest gear selectable, if the gradient is steep.

* '''L and 2 gear in a full automatic''': The L and 2 gear in automatic can be simulated in an MMT car by either using E1/E2 or M1/M2.

* '''Es mode''': Es mode allows more dynamic and sporty driving with faster gear changes, at the expense of greater [[fuel consumption]]. Es mode is available in the [[Toyota Yaris|Yaris]] and [[Toyota Auris|Auris]] (in Europe). Es mode is similar to the S mode in [[Direct-Shift Gearbox]].

== Operation under M mode ==

* '''L and 2 gear in a full automatic''': The L and 2 gear in automatic can simulated in an MMT car by either using E1/E2 or M1/M2.

Under M mode, sequential gear shifts can be made by changing the gear to M+ and M-M−. Under M mode, the gear selected will be displayed as one of M1/M2/M3/M4/M5/M6 on the [[dashboard]]. Under M mode, the gear will not change even if the engine revolutionRPM reaches the red-zoneredline, which will probably lead to engine damage. However, the user is prevented from excessively downshifting to a gear that exceeds the maximum revolution possible for the engine, or excessively up-shiftingupshifting to a gear that may lead the engine to stall. When the car is braked to a complete stop, the M1 gear is automatically selected.

== Competitors ==

* '''Es mode''': Es mode allows more dynamic and sporty driving with faster gear changes, at the expense of greater [[fuel consumption]]. Es mode is available in the [[Yaris]] and [[Auris]] (in Europe). Es mode is similar to the S mode in [[Direct-Shift Gearbox]].

Operationally similar systems are the [[Direct-Shift Gearbox]] offered by [[Volkswagen AG]], and[[Selespeed]] offered by [[Alfa Romeo]], [[Honda I-SHIFT|I-SHIFT]] offered by [[Honda]], Auto Gear Shift offered by [[Suzuki]], ESCOT by [[UD Trucks]], and [[Dacia Easy-R]] by Renault Group's [[Automobile Dacia|Dacia]]. Other technologies that produce automatic transmissions are the conventional [[automatic transmission]] and [[continuously variable transmission]]. For example, [[continuously variable transmission]] is implemented as the MultiDrive S in [[Toyota iQ]].

==Operation underSee Malso mode==

* [[AutomaticAutomated manual transmission]]

Under M mode, sequential gear shifts can be made by changing the gear to M+ and M-. Under M mode, the gear selected will be displayed as one of M1/M2/M3/M4/M5/M6 on the [[dashboard]]. Under M mode, the gear will not change even if the engine revolution reaches the red-zone, which will lead to engine damage. However, the user is prevented from excessively downshifting to a gear that exceeds the maximum revolution possible for the engine, or excessively up-shifting to a gear that may lead the engine to stall. When the car is braked to a complete stop, the M1 gear is automatically selected.

* [[Honda I-SHIFT]]

* [[Direct-Shift Gearbox]]

* [[Automatic transmission]]

* [[Tiptronic]]

==Competitors References ==

Operationally similar systems are the [[Direct-Shift Gearbox]] offered by [[Volkswagen AG]] and [[Honda I-SHIFT|I-SHIFT]] offered by [[Honda]]. Other technologies that produce automatic transmissions are the conventional [[automatic transmission]] and [[continuously variable transmission]]. For example, [[continuously variable transmission]] is implemented as the MultiDrive S in [[Toyota iQ]].

==References==

{{reflist}}

Toyota Europe Yaris user manual

==External links==

A picture of the multi-mode transmission on left-hand drive vehicle. [http://www.hatauto.ee/bw_client_files/hatauto/public/img/Image/toyota%20english/Yaris/yaris16.jpg] [http://www.hatauto.ee/?id=2038]

==See also==

*[[Honda I-SHIFT]]

*[[Direct-Shift Gearbox]]

*[[Automatic transmission]]

*[[Tiptronic]]

{{DEFAULTSORT:Multimode Manual Transmission}}