2018 MERCEDES-BENZ C-CLASS CABRIOLET fuel cap release

Emergency releaseDriver's door .................................... 83
Trunk .............................................. .85
Vehicle .............................................8 3
Emergency Tensioning Devices
Activation ........................................ .56
Emissions control
Service and warranty information .... 28
Engine
Check Engine warning lamp .......... .247
Display message ............................ 225
ECO start/stop function ................ 127
Engine number ............................... 340
Irregular running ............................ 129
Jump-starting ................................. 304
Starting (important safety notes) ... 125
Starting problems .......................... 129
Starting the engine with the
SmartKey ....................................... 125
Starting via smartphone ................ 126
Starting with the Start/Stop but-
ton ................................................. 125
Switching off .................................. 144
Tow-starting (vehicle) ..................... 309
Engine electronics
Problem (malfunction) ................... 129
Engine jump starting
see Jump starting (engine)
Engine oil
Adding ...........................................2 83
Additives ........................................ 343
Checking the oil level ..................... 282
Checking the oil level using the
dipstick .......................................... 283
Display message ............................ 227
Filling capacity ............................... 343
General notes ................................ 342
Notes about oil grades ................... 342
Notes on oil level/consumption .... 282
Temperature (on-board computer,
Mercedes-AMG vehicles) ...............2 08
Engine oil additives
see Additives (engine oil)
Entering an address
see also Digital Operator's Ma

n-
ual ..................................................2 53
ESC (Electronic Stability Control)
see ESP
®(Electronic Stability Program) ESP
®(Electronic Stability Pro-
gram)
AMG menu (on-board computer) ... 209
Characteristics ................................. 68
Crosswind Assist .............................7 1
Deactivating/activating (button
in Mercedes-AMG vehicles) .............6 9
Deactivating/activating (notes,
except Mercedes-AMG vehicles) ...... 68
Deactivating/activating (on-
board computer, except
Mercedes-AMG vehicles) ............... 204
Display message ............................ 213
Function/notes ................................ 67
General notes .................................. 67
Important safety information ........... 68
Trailer stabilization ........................... 70
Warning lamp ................................. 244
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 68
Exhaust
see Exhaust pipe
Exhaust check ................................... 147
Exhaust pipe
Cleaning ......................................... 292
Exterior lighting
Cleaning ......................................... 291
Setting options .............................. 107
see Lights
Exterior mirrors
Adjusting ....................................... 103
Dipping (automatic) ....................... 104
Folding in/out (automatically) ....... 104
Folding in/out (electrically) ........... 103
Out of position (troubleshooting) ... 104
Setting ........................................... 103
Storing settings (memory func-
tion) ............................................... 106
Storing the parking position .......... 104
Eyeglasses compartment ................. 264
F
Favorites
Overview ........................................ 256
Features ............................................. 267
Filler cap
see Refueling
Index11

GWARNING
If the required tire pressure is not reached
after the specified time, the tire is too badly
damaged. The tire sealant cannot repair the
tire in this instance. Damaged tires and a tire
pressure that is too low can significantly
impair the vehicle's braking and driving char-
acteristics. There is a risk of accident.
Do not continue driving. Contact a qualified
specialist workshop.
Tire pressure reached
GWARNING
A tire temporarily sealed with tire sealant
impairs the driving characteristics and is not
suitable for higher speeds. There is a risk of
accident.
You should therefore adapt your driving style
accordingly and drive carefully. Do not exceed the specified maximum speed with a tire that
has been repaired using tire sealant.
The maximum permissible speed for a tire
sealed with tire sealant is 50 mph (80 km/h).
The upper part of the TIREFIT sticker must be
affixed to the instrument cluster in the driver's
field of vision.
If a tire pressure of 200 kPa (2.0 bar/29 psi) has
been attained after ten minutes:
XSwitch off the tire inflation compressor.
XUnscrew the filler hose from the valve of the
faulty tire.
Tire sealant may escape when the filler hose is
unscrewed.
XStow the tire sealant bottle and the tire infla-
tion compressor.
XPull away immediately .
XStop after driving for approximately ten
minutes and check the tire pressure with the
tire inflation compressor.
The tire pressure must now be at least
130 kPa (1.3 bar/19 psi).
GWARNING
If the required tire pressure is not reached
after driving for a short period, the tire is too
badly damaged. The tire sealant cannot repair
the tire in this instance. Damaged tires and a
tire pressure that is too low can significantly
impair the vehicle's braking and driving char-
acteristics. There is a risk of accident.
Do not continue driving. Contact a qualified
specialist workshop.
In cases such as the one mentioned above, con-
tact an authorized Mercedes-Benz Center. Or
call 1-800-FOR-MERCedes (in the USA) or
1-800-387-0100 (in Canada).
XCorrect the tire pressure if it is still at least
130 kPa (1.3 bar/19 psi). See the Tire and
Loading Information placard on the B-pillar on
the driver's side or the tire pressure table in
the fuel filler flap for values.
XTo increase the tire pressure: switch on the
tire inflation compressor.
XTo reduce the tire pressure: depress pres-
sure release button :next to pressure
gauge ;.
XWhen the tire pressure is correct, unscrew the
filler hose from the valve of the sealed tire.
Tire sealant may escape when the filler hose is
unscrewed.
XScrew the valve cap onto the tire valve of the
sealed tire.
300Flat tire
Breakdown assistance

Maximum tire pressures
:Example: maximum permissible tire pres-
sure
Never exceed the maximum permissible tire
inflation pressure. Always observe the recom-
mended tire pressure for your vehicle when
adjusting the tire pressure (
Ypage 315).
iThe actual values for tires are vehicle-spe-
cific and may deviate from the values in the
illustration.
Checking the tire pressures
Important safety notes
Observe the notes on tire pressure
(Ypage 315).
Information on air pressure for the tires on your
vehicle can be found:
Ron the vehicle's Tire and Loading Information
placard on the B-pillar
Rin the tire pressure table in the fuel filler flap
(Ypage 142)
Rin the "Tire pressure" section
Checking tire pressures manually
To determine and set the correct tire pressure,
proceed as follows:
XRemove the valve cap of the tire that is to be
checked.
XPress the tire pressure gauge securely onto
the valve.
XRead the tire pressure and compare it to the
recommended value on the Tire and Loading
Information placard or the tire pressure table (
Ypage 315).
XIf the tire pressure is too low, increase the tire
pressure to the recommended value.
XIf the tire pressure is too high, release air. To
do so, press down the metal pin in the valve,
using the tip of a pen for example. Then check
the tire pressure again using the tire pressure
checker.
XScrew the valve cap onto the valve.
XRepeat these steps for the other tires.
Tire pressure loss warning system
General notes
While the vehicle is in motion, the tire pressure
loss warning system monitors the set tire pres-
sure using the rotational speed of the wheels.
This enables the system to detect significant
pressure loss in a tire. If the speed of rotation of
a wheel changes as a result of a loss of pressure,
a corresponding warning message will appear in
the multifunction display.
You can recognize the tire pressure loss warning
by the Run Flat Indicator Active
Press'OK' to Restartmessage which appears in
the Servicemenu of the multifunction display.
Information on the message display can be
found in the "Restarting the tire pressure loss
warning system" section (
Ypage 319).
Important safety notes
The tire pressure warning system does not warn you of an incorrectly set tire pressure. Observe
the notes on the recommended tire pressure
(
Ypage 315).
The tire pressure loss warning does not replace
the need to regularly check the tire pressure. An
even loss of pressure on several tires at the
same time cannot be detected by the tire pres-
sure loss warning system.
The tire pressure monitor is not able to warn you
of a sudden loss of pressure, e.g. if the tire is
penetrated by a foreign object. In the event of a
sudden loss of pressure, bring the vehicle to a
halt by braking carefully. Avoid abrupt steering
movements.
The function of the tire pressure loss warning
system is limited or delayed if:
Rsnow chains are mounted on your vehicle's
tires.
Rroad conditions are wintry.
318Tire pressure
Wheels and tires