2014 BMW I8 fuel pressure

high-voltage battery is charged at the same
time.
The hybrid system always starts the combus‐
tion engine automatically.
Energy recovery: CHARGE The high-voltage battery is charged while driv‐
ing through energy recovery.
The electric motor acts as a generator and
converts the kinetic energy of the vehicle into
electric current.
Charging can take place in various situations
while the vehicle is in motion:▷When the vehicle is rolling if the accelera‐
tor pedal is not pressed.▷During vehicle braking.
When exerting gentle pressure on the brakes,
the vehicle is only braked by the electric motor.
When the brake pedal is depressed further, the
brake system is activated additionally. This is
why only part of the brake energy is used to
charge the high-voltage battery when exerting
firm pressure on the brake.
The mark in the instrument cluster is located
within the CHARGE range.
Sensible driving and early speed reduction are
important to make full use of the energy recov‐
ery feature.
Display The eDRIVE displays, refer to page 72, pro‐
vide information about the current state of the
drive and visualize the system's use in a dia‐
gram.
Energy-saving driving To save energy while driving, read the follow‐
ing information:
Before driving eDRIVE allows using the air conditioner even
before driving off. The stationary climate con‐
trol, refer to page 123, provides more range
than full air conditioning while driving.
Parked car ventilation during the charging
process can provide maximum range when
driving off.
During driving▷General driving tips, refer to page 140, for
increasing the range.▷Use the eDRIVE system efficiently, refer to
page 134, for an optimized driving style.▷ECO PRO mode, refer to page 141, for in‐
creasing the range.▷Display of hybrid system utilization, refer to
page 75▷Hints for saving fuel, refer to page 140, for
reduction of the fuel consumption.
After the trip
▷Charge vehicle, refer to page 146, and
plan next trip.▷Prepare for long downtimes, refer to
page 183.
BMW i Remote app
A special BMW i Remote App allows to control
and display certain vehicle functions using a
smartphone.
Safety information Read the information on safe handling of the
high-voltage system, refer to page 178.
Long-term Follow the instructions for vehicle storage and
for longer idle periods, refer to page 183.
Seite 32At a glanceBMW eDRIVE32
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System limits
The system does not function properly if a re‐
set has not been carried out, e.g., a flat tire is
reported though tire inflation pressures are
correct.
The tire inflation pressure depends on the
tire's temperature. Driving or exposure to the
sun will increase the tire's temperature, thus
increasing the tire inflation pressure. The tire
inflation pressure is reduced when the tire
temperature falls again. These circumstances
may cause a warning when temperatures fall
very sharply.
Malfunction The yellow warning lamp flashes and
then lights up continuously. A Check
Control message is displayed. No flat
tire or loss of tire inflation pressure can be de‐
tected.
Display in the following situations:▷A wheel without TPM electronics is fitted:
have the service center check it if needed.▷Malfunction: have the system checked by
your service center.▷TPM was unable to complete the reset.
Reset the system again.▷Interference through systems or devices
with the same radio frequency: after leav‐
ing the area of the interference, the system
automatically becomes active again.
Declaration according to NHTSA/
FMVSS 138 Tire Pressure Monitoring
System
Each tire, including the spare (if provided)
should be checked monthly when cold and in‐
flated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If your
vehicle has tires of a different size than the size
indicated on the vehicle placard or tire inflation
pressure label, you should determine the
proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has
been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire pres‐
sure telltale when one or more of your tires is
significantly under-inflated. Accordingly, when
the low tire pressure telltale illuminates, you
should stop and check your tires as soon as
possible, and inflate them to the proper pres‐
sure. Driving on a significantly under-inflated
tire causes the tire to overheat and can lead to
tire failure. Under-inflation also reduces fuel ef‐
ficiency and tire tread life, and may affect the
vehicle's handling and stopping ability. Please
note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's
responsibility to maintain correct tire pressure,
even if under-inflation has not reached the
level to trigger illumination of the TPMS low
tire pressure telltale. Your vehicle has also
been equipped with a TPMS malfunction indi‐
cator to indicate when the system is not oper‐
ating properly. The TPMS malfunction indica‐
tor is combined with the low tire pressure
telltale. When the system detects a malfunc‐
tion, the telltale will flash for approximately one
minute and then remain continuously illumi‐
nated. This sequence will continue upon sub‐
sequent vehicle start-ups as long as the mal‐
function exists. When the malfunction indicator
is illuminated, the system may not be able to
detect or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of
reasons, including the installation of replace‐
ment or alternate tires or wheels on the vehicle
that prevent the TPMS from functioning prop‐
erly. Always check the TPMS malfunction tell‐
tale after replacing one or more tires or wheels
on your vehicle to ensure that the replacement
or alternate tires and wheels allow the TPMS
to continue to function properly.Seite 98ControlsSafety98
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Increase rangeGeneral informationThe vehicle contains comprehensive technolo‐
gies for reducing the energy consumption and
for maximizing the range.
The range depends on a number of different
factors.
The implementation of certain measures, driv‐
ing style and regular maintenance can increase
range and thereby also reduce the environ‐
mental impact.
Remove unnecessary cargo
Additional weight increases fuel consumption.
Remove attached parts
following use
Attached parts on the vehicle impair the aero‐
dynamics and increase the energy consump‐
tion.
Closing the windows
Open windows increase air resistance and
therefore lead to greater fuel consumption.
Tires General information Tires can affect energy consumption in various
ways, for instance energy consumption can be
influenced by tire size.Check the tire inflation pressure
regularly
Check and, if needed, correct the tire inflationpressure at least twice a month and before
starting on a long trip.
Low tire inflation pressure increases rolling re‐
sistance and thus raises energy consumption
and tire wear.
Standing air conditioning Run advance climate control, refer to
page 123, in the vehicle during charging if pos‐
sible before driving off.
Heating and cooling operations are very en‐
ergy intensive and substantially reduce the
electric range.
Look well ahead when
driving
Avoid unnecessary acceleration and braking.
By maintaining a suitable distance to the vehi‐
cle driving ahead of you.
Driving smoothly and proactively reduces fuel
consumption.
Longer braking procedures result in more effi‐
cient charging of the high-voltage battery via
energy recovery from braking.
Use coasting
When approaching a red light, take your foot
off the accelerator and let the vehicle coast to
a halt.Seite 140Driving tipsIncrease range140
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RefuelingVehicle features and options
This chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems.
Hints Refuel promptly
Refuel no later than at a range of
30 miles/50 km or engine operation might fail
and damage might occur.◀
Do not refuel unless the engine is at a
standstill and the selector lever is in posi‐
tion P/N
Do not refuel unless the engine is at a standstill
and the selector lever is in position P/N, other‐
wise the buildup of pressure may cause the
fuel nozzle to shut off prematurely.◀
Tank ventThe concept
The vehicle is equipped with a special fuel
tank. It is designed for special requirements
that arise with the hybrid operation of the vehi‐
cle, e.g., alternating drive with combustion en‐
gine or electric motor.
General information
In the fuel tank, excess pressure can build up
due to gasoline vapors which are dissipated
before the tank lid is opened.At a glance
The button is located on the driver's side on
the door armrest.
Tank venting1.Switch off drive readiness.2.
Press button to start the pressure
equalization.
The status of the tank venting is displayed
in the instrument cluster. In rare cases, the
tank venting can last several seconds.
If the tank venting has been completed, a
message is displayed in the instrument
cluster. The tank lid is released for open‐
ing.
3.Open the fuel filler flap.
If the fuel filler flap is not opened within 10
minutes after the fuel filler flap was re‐
leased, the fuel filler flap relocks. Press
button again.
Fuel lid
Opening
Before opening , vent the tank, refer to
page 154.
1.Briefly press the rear edge of the fuel filler
flap.Seite 154MobilityRefueling154
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2.Turn the tank lid counterclockwise.3.Place the tank lid in the bracket attached to
the fuel filler flap.
Closing
1.Fit the lid and turn it clockwise until you
clearly hear a click.2.Close the fuel filler flap.
Do not pinch the retaining strap
Do not pinch the retaining strap attached
to the lid; otherwise, the lid cannot be closed
properly and fuel vapors can escape.◀
Manually unlocking fuel filler flap In the event of an electrical malfunction, e.g.
The release is located in the cargo area.1.Open the cover on the right side trim.2.Pull the green knob with the fuel pump
symbol. This releases the fuel filler flap.3.Open the fuel filler flap.4.Carefully open the fuel filler flap. Excess
pressure can build up in the fuel tank from
gasoline vapor.5.Fuel the vehicle as usual. This may be diffi‐
cult due to the residue pressure in the
tank, caused by frequent stopping of the
fuel pump nozzle, e.g.Seite 155RefuelingMobility155
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Retreaded tires
Possibly substantial variations in the de‐
sign and age of the tire casing structures can
limit service life and have a negative impact on
road safety.◀
Winter tires
Winter tires are recommended for operating on
winter roads.
Although so-called all-season M+S tires pro‐
vide better winter traction than summer tires, they do not provide the same level of perform‐
ance as winter tires.
Maximum speed of winter tires If the maximum speed of the vehicle is higher
than the permissible speed for the winter tires,
then a respective symbol is displayed in your
field of vision. You can obtain this sign from the
tire specialist or from your service center.
Maximum speed for winter tires
Do not exceed the maximum speed for
the respective winter tires; otherwise, tire dam‐
age and accidents can occur.◀
Rotating wheels between axles Different wear patterns can occur on the front
and rear axles depending on individual driving
conditions. The tires can be rotated between
the axles to achieve even wear. Your service
center will be glad to advise you. After rotating,
check the tire pressure and correct if needed.
Rotating the tires is not permissible on vehi‐
cles with different tire sizes on the front and
rear axles, i.e. when using different types of
tires.
Storage Store wheels and tires in a cool, dry place with
as little exposure to light as possible.
Always protect tires against all contact with oil,
grease and fuels.Do not exceed the maximum tire inflation pres‐
sure indicated on the side wall of the tire.
Snow chains
Fine-link snow chains
Only certain types of fine-link snow chains
have been tested by the manufacturer of the
vehicle, classified as road-safe and approved.
Information about the approved snow chains
are available from the service center.
Use
Use only in pairs on the rear wheels, equipped
with the tires of the following size:▷215/45 R 20
Follow the snow chain manufacturer's instruc‐
tions.
Make sure that the snow chains are always
sufficiently tight. Retighten as needed accord‐
ing to the chain manufacturer's instructions.
Do not initialize the Tire Pressure Monitor after
mounting snow chains, as doing so may result
in incorrect readings.
When driving with snow chains, activate the
Sport program with the selector lever. This en‐
sures that the rear wheels are being powered.
When driving with snow chains, briefly activate
Dynamic Traction Control if needed.
Maximum speed with snow chains Do not exceed a speed of 30 mph/50 km/hwhen using snow chains.
Seite 164MobilityWheels and tires164
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Everything from A to Z
IndexA ABS, Antilock Brake Sys‐ tem 105
Acceleration Assistant, refer to Launch Control 70
Acoustic pedestrian protec‐ tion 62
AC quick charging cable, see Level 2 charging cable 147
Activated-charcoal filter 123
Activate drive readiness 60
Adapting to the course of the road, hybrid system 76
Adaptive brake lights, refer to Brake force display 104
Additives, oil 167
Adjustments, seats/head re‐ straints 48
Adjustments, steering wheel 53
After washing vehicle 181
Airbags 93
Airbags, indicator/warning light 94
Air circulation, refer to Recir‐ culated-air mode 121
Air, dehumidifying, refer to Cooling function 121
Air distribution, manual 122
Air flow, automatic climate control 122
Air pressure, tires 159
Air vents, refer to Ventila‐ tion 123
Alarm system 45
Alarm, unintentional 46
All around the center con‐ sole 16
All around the roofliner 17 All around the steering
wheel 14
All-season tires, refer to Win‐ ter tires 164
Alternating-code hand-held transmitter 126
Alternative oil types 168
Antifreeze, washer fluid 67
Antilock Brake System, ABS 105
Anti-slip control, refer to DSC 105
Approved axle load 187
Approved engine oils 167
Arrival time 84
Artificial engine noise 62
Assistance for the combus‐ tion engine 62
Assistance, Roadside Assis‐ tance 176
Assistance when driving off 108
ASSIST, Hybrid system 62
Assist system, refer to Intelli‐ gent Safety 99
AUTO intensity 122
Automatic car wash 180
Automatic climate con‐ trol 120
Automatic Curb Monitor 51
Automatic deactivation, front- seat passenger airbags 95
Automatic deactivation of the high-voltage system 178
Automatic headlight con‐ trol 90
Automatic locking 45
Automatic recirculated-air control 121 Automatic transmission, see
Steptronic Sport transmis‐
sion 67
AUTO program, automatic cli‐ mate control 122
AUTO program, intensity 122
Average fuel consumption 84
Average speed 84
Axle loads, weights 187
B Backup charging 152
Band-aids, refer to First aid kit 176
Battery, 12 volt 173
Battery replacement, vehicle battery 173
Battery replacement, vehicle remote control 36
Battery state indicator 74
Battery, vehicle 173
Belts, safety belts 50
Beverage holder, cu‐ pholder 131
BMW Assist 6
BMW eDRIVE 31
BMW maintenance sys‐ tem 170
Body work, see Working on the vehicle 178
Bottle holder, refer to Cu‐ pholders 131
Brake assistant 105
Brake discs, break-in 134
Brake force display 104
Brake lights, adaptive 104
Brake lights, brake force dis‐ play 104
Brake pads, break-in 134
Braking, hints 136 Seite 190ReferenceEverything from A to Z190
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F
Failure message, see Check Control 76
False alarm, refer to Uninten‐ tional alarm 46
Fan, refer to Air flow 122
Filler neck for engine oil 167
First aid kit 176
Fitting for towing, see tow fit‐ ting 177
Flat tire, changing wheels 173
Flat tire, Tire Pressure Moni‐ tor TPM 96
Flat tire, warning lamp 97
Flooding 136
Floor carpet, care 182
Floor mats, care 182
Fold-out position, wiper 66
Foot brake 136
Front airbags 93
Front-end collision warning with City Braking func‐
tion 99
front-seat passenger airbags, automatic deactivation 95
Front-seat passenger airbags, indicator lamp 95
Fuel 157
Fuel consumption, current 84
Fuel consumption, refer to Average fuel consump‐
tion 84
Fuel filler flap 154
Fuel gauge 79
Fuel lid 154
Fuel quality 157
Fuel recommendation 157
Fuel, tank lidacity 187
Fuse 174 G
Garage door opener, refer to Universal Integrated Remote
Control 125
Gasoline 157
Gear change, Steptronic Sport transmission 68
Gear shift indicator 81
Gearshift, see Steptronic Sport transmission 67
General driving notes 135
Glare shield 127
Glove compartment 130
GPS location, vehicle posi‐ tion 87
Gross vehicle weight, ap‐ proved 187
H
Handbrake, refer to parking brake 63
Hand-held transmitter, alter‐ nating code 126
Hazard warning flashers 175
Head airbags 93
Headlight control, auto‐ matic 90
Headlight courtesy delay fea‐ ture 89
Headlight courtesy delay fea‐ ture, remote control 45
Headlight courtesy delay fea‐ ture via remote control 40
Headlight flasher 65
Headlight glass 172
Headlights, care 181
Head restraints 48
Head restraints, front 51
Head-up Display 87
Head-up Display, care 183
Heavy cargo, stowing 139
Height, vehicle 186
High-beam Assistant 91
High beams 65 High beams/low beams, refer
to High-beam Assistant 91
High-voltage battery, charg‐ ing state indicator 74
High-voltage battery, dis‐ charge 135
High-voltage system, auto‐ matic deactivation 178
High-voltage system, contact with water 178
High-voltage system, safety 178
Hills 137
Hill start assistant, refer to Drive-off assistant 108
Hints 6
Holder for beverages 131
Hood 42
Horn 14
Hot exhaust system 136
HUD Head-up Display 87
Hybrid system, adapting to the course of the road 76
Hybrid system, displays 74
Hydroplaning 136
I
Ice warning, see External temperature warning 80
Icy roads, see External tem‐ perature warning 80
Identification marks, tires 160
Identification number, see ve‐ hicle identification num‐
ber 10
iDrive 18
Ignition key, refer to Remote control 36
Increase range 140
Indication of a flat tire 97
Indicator and alarm lamps, see Check Control 76
Indicator lamp, see Check Control 76
Individual air distribution 122 Seite 193Everything from A to ZReference193
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