Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 447

2.3

Safety Precautions when Tow Starting

and Towing

Caution

Danger of causing damage to the transmission.

♦ When towing the vehicle, the selector lever must be in “N”

and the vehicle must not be towed further than 50 km (31

miles) and not faster than 50 km/h (31 mph).

Note

The engine cannot be tow started, for example, if the battery is

too weak or if the starter is not working.

2.4

Safety Precautions during Road Test

with Testing Equipment

If Testers and Measuring Equipment Must Be Used during a Test

Drive, Follow the Points Below:

WARNING

There is a risk of an accident due to distractions and improperly

secured testing equipment.
The front passenger airbag poses a risk if it deploys during an

accident.

• Operating testing equipment while driving is a distraction.
• Testing equipment that is not secured properly increases

the risk of personal injury.

♦ Always secure testing equipment on the rear seat using a

strap and have a second person in the rear seat operate

it.

3

Repair Information

⇒ “3.1 General Information”, page 5

 .

⇒ “3.2 Clean Working Conditions”, page 5

 .

⇒ “3.3 General Repair Information”, page 6

 .

⇒ “3.4 Seals, Sealing Rings”, page 7

 .

⇒ “3.5 Bolts and Nuts”, page 8

 .

3.1

General Information

Transmission
♦ The flywheel transfers the engine torque to the double clutch.

The flywheel and the dual clutch are connected via splines.

Together they assume the function of the dual-mass flywheel.

♦ The transmission is built like a 6-gear manual transmission.

The alternating hydraulic actuation of the double clutch per‐

mits operation similar to that of an automatic transmission.

This means the gears are automatically or manually shifted via

the Tiptronic mode. Clutch pedal is not available.

Selector Mechanism
In contrast to the automatic transmission, the selector lever po‐

sition is no longer transmitted mechanically to the transmission

via the selector lever cable and Multi-Function Transmission

Range (drive position sensor). Selector lever positions and shifts

are transmitted via a separate control module in the selector

mechanism to the transmission control module via the CAN-Bus.

The shift occurs without a cable. The selector lever cable is me‐

chanically brought into the park brake in the selector lever position

“P”.
Shift Point Changes on Inclines and Declines
An additional gear change map automatically selects the gear

changes for gradients dependent upon accelerator pedal position

and driving speed.
• The gear change map for extreme uphill stretches is matched

to engine output

• The gear change map for extreme downhill stretches is match‐

ed to the braking effect of the engine.

• Direct gear selection by way of the Tiptronic function permits

utilization of engine braking action with a specific gear engag‐

ed, for example, on a downhill gradient with a trailer.

3.2

Clean Working Conditions

♦ Always clean the connection points and the area around them

first, and then loosen them.

♦ Seal all open lines and connections immediately with clean

plugs or caps from the Engine Bung Set - VAS6122- .

♦ Place removed parts on a clean surface and cover them so

that they do not get dirty. Use foil and paper. Use a lint-free

cloth.

♦ Always make sure that no dirt enters an “open” transmission.
♦ Only install clean components. Install replacement parts im‐

mediately after removing them from their packaging.

♦ Cover all opened components carefully if it necessary to per‐

form a repair.

♦ Protect the disconnected connectors from dirt and moisture

and only connect when they are dry.

3.3

General Repair Information

Carefulness, cleanliness and the correct tools are required for

transmission repairs to be successful. The usual basic safety pre‐

cautions also, naturally apply when carrying out vehicle repairs.
A number of generally applicable instructions for individual repair

operations, which are otherwise mentioned at various points in

the Workshop Manual, are summarized here. They apply to this

repair manual.
Guided Fault Finding, On Board Diagnostics (OBD) and Test In‐

struments
♦ Before starting any repairs on the transmission, determine the

cause of the damage as accurately as possible. Refer to Ve‐

hicle Diagnostic Tester , 

Guided Fault Finding

, 

OBD

 or

Test Instruments

.

Special Tools and Equipment
For a complete list of special tools used in the Repair Manual.

Refer to Equipment and Special Tools.
Transmission
Always make sure that no dirt or contaminants enter an »open«

transmission. Any dirt that enters can cause transmission failure,

especially if the DSG Transmission Mechatronic - J743- and/or

the transmission fluid pump are »open«.
♦ Do not run the engine and do not tow the vehicle if the trans‐

mission cover is removed or if there is no transmission fluid

inside the transmission.

♦ Always clean the connection points and the area around them

first, and then loosen them.

♦ When installing transmission, make sure centering sleeves

are correctly seated between engine and transmission.

Circlips
♦ Do not overstretch the circlips.
♦ Replace damaged or stretched circlips.
♦ The circlips must fit completely inside the groove.
Transmission Fluid, Environmental and Disposal Regulations.
The quality of transmission fluid is crucial to transmission function.
♦ Shake the fluid containers before opening.
♦ Do not mix any additives in the oil. Do not fill with a different

transmission fluid.

♦ The drained transmission fluid must not be used again.
♦ Dispose of drained transmission fluid correctly.
♦ Follow the legal environmental and disposal regulations.
♦ Observe the information on oil the packaging.

Fluid Drain and Check Plug
A plastic overflow tube is located behind this screw -arrow- (with

8 mm hex socket head). Its length determines the oil level in the

transmission.

Electrical Components
Due to an electrostatic charge to the human body, a person can

receive an electrostatic shock when metal objects are touched.
This charge can damage the electrical/electronic components on

the transmission and the selector mechanism.
– Touch a grounded object, such as, a water pipe or a vehicle

hoist, before working on electrical/electronic components. Do

not touch connector or »open« electronic components directly.

3.4

Seals, Sealing Rings

♦ Replace the O-rings, seals and gaskets.
♦ After removing seal rings and seals, always inspect the con‐

tact surfaces at housing or shaft for burrs resulting from re‐

moval, or for other signs of damage.

♦ Before installing the seal rings, lightly oil the outer circumfer‐

ence and fill the space between the sealing lips -arrow- half‐

way with Grease - G 052 128 A1- .

♦ The open side of the seals point toward the fluid to be sealed

in.

♦ Use DSG

®

 transmission fluid only. Other lubricants cause

malfunctions.

♦ Coat the O-rings with DSG

®

 transmission fluid before inserting

to prevent crushing rings during installation.

♦ After replacing the seals, O-rings and sealing rings, check the

transmission fluid level and fill if necessary. Refer to

⇒ “9.1 Transmission Fluid Level, Checking”, page 113

 .