Driving
situations Requirements and conditions Vehicle behavior
– CAReful use of E-MODE button
⇒ fig. 251.
The high-voltage battery discharges quickly
with the E-MODE button switched on. This
can increase fuel consumption since driving
in electric mode is preferred in this case,
even though the combustion engine would
be more efficient.
Driving on
country roads
and highways.
– Conscious easing off of the
accelerator, to enable longer sailing
distance.
By easing off the accelerator, the
combustion engine is automatically
switched off and de-clutched. The vehicle
glides without engine power.
- Reducing speed by easing off the
accelerator early and not by
braking.
Sailing possible. Reduction of speed this
way is more fuel-efficient than through
braking.
- Avoid speeds of over about 160
km/h (99 mph).
Efficient sailing is possible with a speed of
about 160 km/h (99 mph) .
- CAReful selection of gear (S).
Sporty driving style with activated sport
programme increases fuel consumption.
Efficient sailing in sport programme with
combustion engine automatically switched
off is possible with a speed of about 70
km/h (43 mph).
Driving in cold
months.
- Do not warm up the combustion
engine by running it with the
vehicle stationary.
The temperature of the combustion engine
increases very slowly, but fuel consumption
increases considerably.
– CAReful use of heating for
windshield and the rear window,
outside mirror, seat and steering
wheel.
This prevents energy from being lost and
saves energy for the electric motor.
- Never leave the vehicle in a
garage over night.
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 interior is
sufficiently heated.
In order to: You must ⇒fig.134Result:
Reduce set speed (while
cruise control is actively
controlling vehicle
speed).
Push the lever briefly to the
3 0 % % $ – position (–) to reduce
speed in increments of 5 mph
(10 km/h) and store.
Cruise control will slow the vehicle
down without braking by reducing the
flow of fuel to the engine until the new
lower speed is reached and saves the
new lower speed in the memory. Push and hold the lever in the
3 0 % % $ – position (–) to reduce the
set speed until the lower desired
speed is reached and the button
is released.
Switch off cruise control. Move the lever to the / & &position
(B).
System is switched off. The set speed
is deleted.
Driving downhill with cruise control
If cruise control cannot maintain constant speed while driving downhill, slow the vehicle with the foot
brake and downshift if necessary.
Automatic deactivation
Cruise control speed regulation is automatically deactivated or temporarily interrupted:
x If the system detects an error that could affect the function of the cruise control.
x If the vehicle has accelerated and goes faster than the stored speed for a longer time.
x If the brake or clutch pedal is depressed.
x If the vehicle shifts gear (manual transmission).
x If an airbag deploys.
