Volkswagen 01M transmission
Encyclopedia
The Volkswagen 01M transmission is a hydraulic four-speed automatic transmission
, developed in-house by Volkswagen, and deployed in Cabrio, Jetta
, Golf
, GTI
, New Beetle
, and transverse engine Passat
cars
manufactured between 1995 and 2002.
It is an electronically controlled based transmission with a lockup torque converter
. It does not have provision for a dipstick
. VW determined that the dipstick and fill might invite owners to introduce wrong or inferior fluid. Some areas of failure on this transmission include damage to plastic internals due to fluid over-temperature conditions, internal fluid pressure leaks from torn piston diaphragms, worn bores for solenoids in valve body, and the resulting worn clutches and bands. This transmission has a separate oil for the differential than for the transmission, so there are two fluid levels to check.
The shifting of this transmission is controlled by the transmission control computer. This computer is located under the back seat on Volkswagen Golf Mk3
/Jetta models, under the right side dashboard cover on Volkswagen New Beetle
models, and in the wiper area plenum on other Volkswagen Golf Mk4
/Jetta models. After about 10 years, the resistance in the wires and/or connectors grows. The additional resistance prevents the computer from reading the faint pulses from the transmission speed sensors. This causes the transmission to go to "fail safe" mode. This mode keeps the transmission in second gear and the gear indicator in the instrument panel indicates all gears are selected simultaneously.
It has since been replaced by an Aisin
designed 5-speed automatic (09A) Tiptronic, and later 6-speed automatic transmission in New Beetle Convertibles, as well as a Direct-Shift Gearbox
(DSG) based dual clutch transmission
in recent models of the above cars. The DSG does not have a torque converter, and is more akin to a manual transmission
.
Automatic transmission
An automatic transmission is one type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually...
, developed in-house by Volkswagen, and deployed in Cabrio, Jetta
Volkswagen Jetta
Although the Golf had reached considerable success, in the North American markets, Volkswagen observed that the hatchback body style lacked some of the appeal to those who preferred the traditional three-box configuration...
, Golf
Volkswagen Golf
The Volkswagen Golf is a small family car manufactured by Volkswagen since 1974 and marketed worldwide across six generations, in various body configurations and under various nameplates – as the Volkswagen Rabbit in the United States and Canada , and as the Volkswagen Caribe in Mexico .The...
, GTI
Volkswagen Golf
The Volkswagen Golf is a small family car manufactured by Volkswagen since 1974 and marketed worldwide across six generations, in various body configurations and under various nameplates – as the Volkswagen Rabbit in the United States and Canada , and as the Volkswagen Caribe in Mexico .The...
, New Beetle
Volkswagen New Beetle
-Specifications:*Dimension:**Length: **Width: **Height: **Wheelbase: **Curb weight: *Max speed: 177–210 km/h *Acceleration : 6.5-13.2 sec-Body styles:-Engine choices:-Safety:...
, and transverse engine Passat
Volkswagen Passat
The Volkswagen Passat is a large family car marketed by Volkswagen Passenger Cars through six design generations since 1973. Between the Volkswagen Golf / Volkswagen Jetta and the Volkswagen Phaeton in the current Volkswagen line-up, the Passat and its derivatives have been badged variously as...
cars
Automobile
An automobile, autocar, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor...
manufactured between 1995 and 2002.
It is an electronically controlled based transmission with a lockup torque converter
Torque converter
In modern usage, a torque converter is generally a type of hydrodynamic fluid coupling that is used to transfer rotating power from a prime mover, such as an internal combustion engine or electric motor, to a rotating driven load...
. It does not have provision for a dipstick
Dipstick
A dipstick is one of several measurement devices.Some dipsticks are dipped into a liquid to perform a chemical test or to provide a measure of quantity of the liquid....
. VW determined that the dipstick and fill might invite owners to introduce wrong or inferior fluid. Some areas of failure on this transmission include damage to plastic internals due to fluid over-temperature conditions, internal fluid pressure leaks from torn piston diaphragms, worn bores for solenoids in valve body, and the resulting worn clutches and bands. This transmission has a separate oil for the differential than for the transmission, so there are two fluid levels to check.
The shifting of this transmission is controlled by the transmission control computer. This computer is located under the back seat on Volkswagen Golf Mk3
Volkswagen Golf Mk3
The third-generation Volkswagen Golf Mk3 was a car launched in Europe in November 1991 , and in North America in the spring of 1993. The delay in North America was due to Volkswagen's decision to supply U.S. and Canadian dealerships with Mk3 Golfs from the VW plant in Puebla, Mexico...
/Jetta models, under the right side dashboard cover on Volkswagen New Beetle
Volkswagen New Beetle
-Specifications:*Dimension:**Length: **Width: **Height: **Wheelbase: **Curb weight: *Max speed: 177–210 km/h *Acceleration : 6.5-13.2 sec-Body styles:-Engine choices:-Safety:...
models, and in the wiper area plenum on other Volkswagen Golf Mk4
Volkswagen Golf Mk4
Launched in 1999, the Volkswagen Golf Mk4 was the best selling car in Europe in 2001 . The Mk4 was a deliberate attempt to take the Volkswagen Golf series further upmarket, with a high-quality interior and higher equipment levels...
/Jetta models. After about 10 years, the resistance in the wires and/or connectors grows. The additional resistance prevents the computer from reading the faint pulses from the transmission speed sensors. This causes the transmission to go to "fail safe" mode. This mode keeps the transmission in second gear and the gear indicator in the instrument panel indicates all gears are selected simultaneously.
It has since been replaced by an Aisin
Aisin Seiki Co.
, also known as Aisin , is a Japanese corporation which develops and produces components and systems for the automotive industry. Aisin is a Fortune Global 500 company, ranked 347 on the 2007 rankings....
designed 5-speed automatic (09A) Tiptronic, and later 6-speed automatic transmission in New Beetle Convertibles, as well as a Direct-Shift Gearbox
Direct-Shift Gearbox
The Direct-Shift Gearbox , commonly abbreviated to DSG, is an electronically controlled dual clutch multiple-shaft manual gearbox, in a transaxle design - without a conventional clutch pedal, and with full automatic, or semi-manual control...
(DSG) based dual clutch transmission
Dual clutch transmission
A dual clutch transmission, commonly abbreviated to DCT , is a differing type of semi-automatic or automated manual automotive transmission. It utilises two separate clutches for odd and even gear sets...
in recent models of the above cars. The DSG does not have a torque converter, and is more akin to a manual transmission
Manual transmission
A manual transmission, also known as a manual gearbox or standard transmission is a type of transmission used in motor vehicle applications...
.