Volkswagen Passat Specifications download pdf (Page 39)

Glossary.

4MOTION

An all-wheel-drive system that provides the best possible traction

at all road speeds, in all weather and road conditions. An electronic

Haldex clutch responds to traction losses at the front and rear axles

and directs torque to the axle with the best traction.

Adaptive chassis control

The electrically controlled dampers of adaptive chassis control

constantly adjust to the road conditions, the driving situation

and driver’s requirements. Using a button located on the centre

console, the driver selects between three damper settings –

NORMAL, COMFORT and SPORT.

Starting from the normal setting, the driver can change the basic

character of the car towards sporty or more comfort-oriented

driving. In SPORT and COMFORT settings, the corresponding

name is illuminated in the button. In NORMAL setting, only the

shock absorber symbol is illuminated. In all settings, the adaptive

chassis control adjusts the damping to the particular driving

situation (up till one thousand times per second) which means it

offers an optimum level of driving comfort and enjoyment at all

times. In addition, in the SPORT setting the steering feel is also

adapted. Particularly on windy roads and poor surfaces, using

adaptive chassis control offers sporty and yet comfortable driving.

Adaptive Cruise Control (ACC)

Adaptive Cruise Control (ACC) is an extension of the conventional

cruise control system with advanced capabilities based on a radar

sensor. When ACC is activated, the vehicle automatically brakes and

accelerates in a speed range set by the driver.

If the Passat approaches a slower vehicle, the ACC brakes the car

to the same speed and maintains the pre-selected distance. Even

when a vehicle pulls into the same lane in front of you or slows, your

vehicle is automatically decelerated to the pre-selected distance. If

the vehicle ahead moves out of your lane, the Passat then accelerates

up to the preset desired speed.

Deceleration of the vehicle may take place via intervention in the

engine management system. If deceleration via engine torque is not

sufﬁ cient, brake intervention takes place, braking the vehicle to a

standstill if the trafﬁ c situation necessitates. ACC can be reactivated

automatically by tapping the accelerator pedal.

Adaptive Cruise Control (ACC) cannot replace the driver’s assertiveness. The driver

is still legally responsible for the vehicle and must monitor the speed and distance

in relation to other vehicles. The ACC system should not be used on winding roads

or in adverse weather conditions such as heavy rain.

Anti-lock Braking System (ABS)

When braking, wheel speed sensors measure the road wheel

speed and should one or more wheels start to lock the ABS system

reduces brake pressure to that wheel. This prevents the wheels

from locking during heavy or emergency braking, enabling the

vehicle to remain steerable.

Anti-Slip Regulation (ASR)

ASR improves driving and steering characteristics by preventing

the driven wheels from spinning under acceleration. When a

difference in driving wheel speed is detected (i.e. when one wheel

starts to spin due to differences in road surfaces, e.g. due to water

or dirt) the system automatically reduces engine torque. ASR is a

switchable traction control system.

Auto Hold function

As soon as the vehicle comes to a complete stop, the ABS hydraulic

unit stores the vehicles ﬁ nal braking pressure. So even when

you take your foot off the brake pedal, all four wheels brakes

remain applied, providing increased comfort in stationary trafﬁ c.

This function is released automatically when you drive off again.

Brake Assist

During emergency braking, Brake Assist aids the driver by

increasing the brake pressure automatically to a level exceeding the

locking limit. The ABS is thus quickly brought into the operating

range, which enables maximum vehicle deceleration to be achieved.

Coasting Function

As soon as the driver’s foot is no longer on the accelerator pedal,

the momentum of the vehicle is used to save fuel with a foresighted

driving style. The engine is declutched and no longer brakes the

vehicle, therefore allowing the vehicle to roll out over a longer

distance. When the brake, accelerator pedal or the gear selector

lever is operated, the clutch is re-engaged and engine braking

takes effect. Coasting Function can be selected or deselected

via the multifunction display settings. The gear selector lever is

required to be in the D position to be functional.

Direct Shift Gearbox (DSG).

DSG is a manual gearbox in which the gearshifts are controlled

electronically. What makes the DSG unique is that it has 2 separate

gear sets operated by 2 clutches. The beneﬁ t of 2 gear sets and

2 clutches is that one gear set and clutch is engaged driving the

vehicle with the second clutch having already pre-selected the

next gear awaiting for power to be transferred. As the next gear

has already been pre-selected prior to power being applied, the

gear change only takes 3-4 100ths of a second. There is virtually no

interruption to power, traction or acceleration. The DSG also offers

Tiptronic gear selection and sports mode.

Electronic Brake-pressure Distribution (EBD)

Electronic, more sophisticated means of regulating the ratio

of front/rear brake pressure. Settings are varied according to

driving and load conditions to ensure each wheel is braked to the

optimum extent.

Electronic Diﬀ erential Lock (EDL)

EDL improves driving and steering characteristics when

accelerating on road surfaces where each wheel has a different

degree of traction. The system operates automatically and is

combined with the ABS system. Using the ABS wheel sensors,

EDL monitors the speed of the individual driving wheels. When a

difference in driving wheel speed is detected (i.e. when one wheel

starts to spin due to differences in road surfaces, e.g. due to water

or dirt) the system brakes the spinning wheel, transferring engine

power to the wheel with the best traction.

Glossary 39

Optional Equipment.

Only available on selected models.

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Volkswagen Passat Specifications Page 39

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