Page 66 of 250

Controls overview
64
Coolant temperature
A warning lamp will come on if the coolant, and 
therefore the engine, becomes too hot.
In addition, a message will appear on the Con-
trol Display.
Check coolant level, refer to page202.
Engine oil temperature*
When the engine is at normal operating temper-
ature, the engine oil temperature is between 
approx. 2107/1006 and approx. 3007/
1506.
If the engine oil temperature is too high, a mes-
sage appears on the Control Display.
Fuel gauge
Fuel tank capacity: approx. 14 US gallons/
53 liters.
You can find information on refueling on 
page188.
If the tilt of the vehicle varies for a longer period, 
when you are driving in mountainous areas, for 
example, the indicator may fluctuate slightly.
Fuel display 135i: in speedometer.
Reserve
Once the fuel level has fallen to the reserve 
zone, a message briefly appears on the Control 
Display and the cruising range for the remaining 
amount of fuel is displayed on the computer. 
Under a cruising range of approx. 30 miles/
50 km, the message remains in the Control Dis-
play.
Refuel as soon as possible once your 
cruising range falls below 30 miles/
50 km; otherwise, engine functions are not 
ensured and damage can occur.<
Computer
Displays in the instrument cluster
Calling up information
Press the button in the turn indicator lever.
The following items of information are dis-
played in the order listed:
>Cruising range
>Average speed
>Average fuel consumption
>Current fuel consumption
>No information 
     
        
        Page 190 of 250

Refueling
188
Refueling
Always switch off the engine before refu-
eling; otherwise, fuel cannot be added to 
the tank and a message will be displayed.<
Take all precautionary measures and 
observe all applicable regulations when 
handling fuel. Do not carry any spare fuel con-
tainers in your vehicle. They can develop a leak 
and cause an explosion or cause a fire in the 
event of an accident.<
Fuel filler flap
Opening
1.Open the fuel filler flap. To do so, lightly 
press the rear edge.
2.Turn the gas cap counterclockwise.
3.Place the gas cap in the bracket attached to 
the fuel filler flap.
Closing
Fit the cap and turn it clockwise until you clearly 
hear a click.
Do not pinch the band attached to the 
cap; otherwise, the cap cannot be closed 
properly and fuel vapors can escape. A mes-
sage will be displayed if the gas cap is loose or 
missing.<
Manually releasing the fuel filler flap
In the event of a malfunction, you can release 
the fuel filler flap manually:1.Remove the cover from the right-hand side-
wall of the cargo area.
2.Pull the button with the fuel pump symbol 
down.
The fuel filler flap is released.
Observe the following when refueling
When handling fuels, follow the safety 
instructions provided at filling stations; 
otherwise, there is a risk of personal injury or 
property damage.<
When refueling, insert the filler nozzle com-
pletely into the filler pipe. Avoid lifting the filler 
nozzle while filling the tank, as that would lead 
to
>premature pump shutoff
>reduced efficiency of the fuel-vapor recov-
ery system.
The fuel tank is full when the filler nozzle clicks 
off the first time.
Fuel tank capacity
Approx. 14 US gallons/53 liters, including the 
reserve capacity of 2.1 US gallons/8 liters.
Refuel as soon as possible once your 
cruising range falls below 30 miles/
50 km; otherwise, engine functions are not 
ensured and damage can occur.<
Fuel specifications
Do not fill the tank with leaded fuel, as this 
would cause permanent damage to the  
     
        
        Page 228 of 250
Technical data
226
Capacities
Notes
Fuel tank:  US gal/liters approx. 14.0/53 Fuel grade: page189
including reserve of US gal/liters approx. 2.1/8.0
Window washer system For more details: page61
including headlamp washers US qt/liters approx. 6.3/6.0 
     
        
        Page 243 of 250

Reference 241
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Remote control26
– battery renewal34
– Comfort Access33
– garage door opener96
– malfunctions29,34
– removing from the ignition 
lock55
– service data203
– trunk lid28
Remote control key, refer to 
Integrated key/remote 
control26
Replacement fuses, refer to 
Fuses213
Replacement remote 
control26
Replacing bulbs, refer to 
Lamps and bulbs209
Replacing tires, refer to New 
wheels and tires196
Reporting safety defects7
Reserve warning, refer to Fuel 
gauge64
Reservoir for washer 
systems61
Reset, refer to Resetting tone 
settings138
Restraint systems, refer to 
Safety belts49
Restraint systems for 
children52
Retreaded tires196
Reverse
– CD changer149
– CD player149
Reverse gear
– automatic transmission with 
Steptronic58
– manual transmission57
Road map128
Roadside 
Assistance181,215
Roadside parking lamps88
– replacing bulbs210
Roadworthiness test, refer to 
Service requirements67
Rollover protection system, 
Convertible84
– resetting85Roof load capacity225
Roof-mounted luggage 
rack112
Rope, refer to Tow-starting, 
towing away218
Rotary/pushbutton control, 
refer to Controller16
Route126,127
– bypassing sections127
– changing
126,127
– changing criteria126
– displaying streets or towns/
cities127
– map view128
– selecting126
Route instructions, refer to 
Destination guidance 
through voice 
instructions127
Route map, refer to Map 
view128
Route section, changing127
Route selection126
RSC Runflat System 
Component, refer to Run-
flat tires196
Runflat System Component 
RSC, refer to Run-flat 
tires196
Run-flat tires196
– continuing driving with a 
damaged tire78
– flat tire78
– new tires196
– remaining driving distance, 
refer to Indication of a flat 
tire78
– tire inflation pressure190
– winter tires197
Runflat tyres, refer to Run-flat 
tires196
S
Safety-belt height 
adjustment49Safety belts49
– damage49
– indicator lamp49
– reminder49
– sitting safely43
Safety systems
– airbags83
– Antilock Brake System 
ABS76
– Dynamic Stability Control 
DSC76
– rollover protection system, 
Convertible84
– safety belts49
Safety tires, refer to Run-flat 
tires196
Satellite radio142
– enabling or unsubscribing 
from a channel142
– favorites144
– selecting channel143
– storing channel143
– timeshift144
– Traffic Jump145
Saving fuel108
Screen, refer to iDrive16
Screw thread for tow 
fitting217
SDARS, refer to Satellite 
radio142
Seat and mirror memory48
Seat belt reminder, refer to 
"Fasten safety belts" 
reminder49
Seats43
– heating48
– sitting safely43
Securing cargo103,104
Selecting a detour132
Selecting new scale for 
navigation129
Selector lever, automatic 
transmission with 
Steptronic58
Service, refer to Roadside 
Assistance215
Service car, refer to Roadside 
Assistance215