2015 VOLKSWAGEN JETTA HYBRID engine

WARNING
Driving fast on icy, slippery, or wet roads can lead to a loss of control and result in serious personal injury for you and your passengers.
x Always adjust your speed and driving style to road, traffic, weather, and visibility condi-tions. Never let the additional safety that ESC, ABS, BAS, ASR, and EDL can provide tempt you into taking extra risks.
x Braking assistance systems cannot overcome the laws of physics and always prevent loss of vehicle control. Slippery and wet roads are still dangerous even with ESC and the other systems!
x Driving too fast on wet roads can cause the wheels to lose contact with the road and “hy-droplane.” A vehicle that has lost road contact cannot be braked, steered, or controlled.
x These systems cannot reduce the risk of accident, for example if you drive too fast for conditions or if you do not keep your distance from the vehicle in front of you.
x Although these systems are very effective and can help you control the vehicle in many difficult situations, always remember that your vehicle handling control is limited by tire trac-tion.
x When accelerating on a slippery surface, for example on ice and snow, depress the accel-erator carefully. Even with these systems, the wheels may start to spin, leading to a loss of vehicle control.
WARNING
The effectiveness of ESC can be significantly reduced if other components and systems that affect vehicle dynamics, including but not limited to brakes, tires, and other systems men-tioned above, are not properly maintained or functioning.
x Always remember that vehicle alterations or modifications can affect the functioning of the ABS, BAS, ASR, EDL, and ESC systems.
x Changing the vehicle suspension or using an unapproved tire/wheel combination can change the way the ABS, BAS, ASR, EDL, and ESC systems work and reduce their effective-ness.
x The effectiveness of ESC is also determined by the tires fitted ⇒  Tires and wheels.
All 4 wheels must be equipped with identical tires in order for ESC and ASR to work properly. Differences in the tread circumference of the tires can cause the system to reduce the engine power when it is not expected.
If ABS is not working, ESC, ASR, and EDL will also not work.
You may hear noises when these systems are active.

Brake fluid

Fig. 118 In the engine compartment: Brake fluid reservoir cap.

The cruise control can assist in maintaining a uniform driving style.
Moderate use of extra electrical loads
Comfort inside the vehicle is nice and important, but it is important to use them in an environmentally conscious manner.
Some devices can increase fuel consumption when activated (examples):
x Climate control system (air conditioner): If the air conditioner has to produce starkly contrasting temperatures, it requires a large amount of energy, which is generated by the engine. The temperature in the vehicle should therefore not be extremely different from that of the outside temperature. It may be helpful to ventilate the vehicle before driving and then to drive a short distance with the windows open. After that, switch on the air conditioner with the windows closed. Keep the windows closed when driving at high speeds. Open windows increase fuel consumption.
x Switch off seat heating once it has served its purpose.
x Switch off the rear window defroster as soon as the windows are free of fog and ice.
Additional factors that increase fuel consumption (examples):
x Malfunctioning engine control.
x Driving in the mountains.
NOTICE
Never let the vehicle coast or roll down a hill in Neutral (N), especially when the engine is not running. The transmission will not be lubricated and will be damaged.
See ⇒  Information on the hybrid drive system for additional tips on using your hybrid drive to help reduce fuel consumption.
Fuel-efficient driving

Fig. 119 Fuel consumption in miles per gallon (mpg) at 2 different outside air temperatures.

WARNING
When powered by the electric motor, the vehicle makes much less noise, both when idling and driving, than when it is running on the internal combustion engine. It is much harder or even impossible for the drivers of other vehicles and above all for cyclists, pedestrians, and children to hear the vehicle when it is running on electrical power.
x Pedestrians and others can be struck and seriously injured because they cannot hear the vehicle and tell that it is getting close to them, for instance when you are parking, backing up, or driving in a low-speed zone where there is likely to be pedestrian traffic.
x Always watch out for pedestrians, especially small children, cyclists, and others who may not hear the vehicle or realize that it is about to move or will cross their path of travel.
x Always be especially careful in residential areas, school zones, and other places where the speed of motor vehicles is restricted and pedestrians may be at greater risk.
x Make sure the ignition and the hybrid drive system have both been turned off before leav-ing the vehicle.
WARNING
Never leave the vehicle when READY is displayed in the Instrument cluster or when hybrid drive system indicator lights are still lit. The vehicle can move if the accelerator is depressed even though the combustion engine has been stopped. This can cause accidents and severe or fatal injuries.
x Make sure the transmission is in Park (P) before you get out of the vehicle.
WARNING
Never support the vehicle with cinder blocks, bricks, or other objects to inspect it. The vehi-cle could slip or move suddenly and cause an accident with serious personal injury.
WARNING
Never let the hybrid battery get wet. Liquids and other fluids can cause short circuits, electri-cal shock, burns, and explosions.
x Never carry large amounts of liquids or other fluids in the luggage compartment.
x Always make sure that any containers with liquids and other fluids are properly secured and tightly closed to prevent leakage during normal driving as well as hard cornering, brak-ing, and other vehicle maneuvers. Leaking liquids can get into the cover of the high-voltage battery and the high-voltage cable connections. This can damage the electrical system and the high-voltage battery.
Never drive until the fuel tank is completely empty. There may not always be enough charge in the high-voltage battery to get to the next gas station.
When outside temperatures are low, a cold high-voltage battery can affect how the combustion engine starts up and can also reduce the vehicle's range in electric drive.

Always switch the ignition off, remove the key, and take it with you when leaving the vehicle ⇒ . As a reminder to do so, the combustion engine may start automatically under the following conditions:
x The ignition is switched ON.
x AND: Electrical drive is functional (Ready).
x AND: The transmission is in Park (P) or Neutral (N).
x AND: The driver safety belt is not fastened OR The driver door is open.
The message in the instrument cluster display also reminds you to switch the ignition off. In addition, always be sure to apply the parking brake, remove the key, and take it with you when leaving the vehicle.
WARNING
A parked vehicle that is not properly parked can roll away and cause accidents or severe injuries. When leaving the vehicle, always move the selector lever into Park (P) and engage the parking brake.
WARNING
Failure to heed warning lights and instrument cluster text messages can cause the vehicle to break down in traffic and result in a collision and serious personal injury.
x Never ignore warning lights or text WARNINGS.
x Always stop the vehicle as soon as it is safe to do so.
NOTICE
Failure to heed warning lights or text WARNINGS can result in vehicle damage.
Special considerations for hybrid vehicles

Fig. 121 High-voltage warning labels: Typical examples of labels found on every high-voltage component.

Fig. 122 General warning label for high-voltage.

Driving situa-
tions
Requirements and
conditions Vehicle behavior
Constant driving
and
gliding without
engine on (sail-
ing).
– Think ahead when
driving, with careful
acceleration.
The kinetic energy of the vehi-
cle is used optimally for its
motion ahead. No energy is
lost through excessive accel-
eration or braking.
– Reduce speed early
or completely in case
of obstacles or speed
limits.
By easing off the accelerator
completely, the combustion
engine is automatically
switched off and disconnected.
The vehicle glides (sails) with-
out engine power, and friction
losses are minimized.
Full acceleration
(Boost).
– Selector lever in
position D.
Accelerator fully de-
pressed or kick-down
acceleration activat-
ed.
The electric motor assists the
combustion engine in accelera-
tion. The maximum overall
output is used briefly
– Selector lever in
position S or
Tiptronic:
accelerator is de-
pressed to 80%.
Braking energy
regeneration
(Recuperation).
– Early and even
braking with short
brake pedal travel.
The vehicle is braked by the
electric motor. Most of the
kinetic energy is then won
back and can be stored in the
form of electrical energy in the
high-voltage battery
Driving in city
traffic.
– Select a moderate
speed.
Driving in fully electric mode at
this level is possible with a
constant speed of up to about
37 mph (60 km/h) on a flat
road surface.

Driving situa-
tions
Requirements and
conditions Vehicle behavior
– Avoid full accelera-
tion.
The fuel consumption is re-
duced with moderate accelera-
tion due to higher efficiency of
the combustion engine and
driving in fully electric mode is
possible.
– Careful use of the
%

Driving situa-
tions
Requirements and
conditions Vehicle behavior
Driving in cold
months.
– Do not warm up the
combustion engine by
running it with the
vehicle stationary.
The temperature of the com-
bustion engine increases very
slowly, but fuel consumption
increases considerably.
– Careful use of heat-
ing for the rear win-
dow, outside mirror,
and front seats.
This prevents energy loss and
saves energy for the electric
motor.
– Leave the vehicle in
a garage overnight.
This prevents the high-voltage
battery and the vehicle interior
from cooling down too much.
The optimal temperature of the
high-voltage battery is reached
quicker at the beginning of the
journey and the combustion
engine can be switched off
quicker when the vehicle inte-
rior is sufficiently heated.

Hybrid functions and modes

Fig. 123 In the lower center console: %