Driving and operating245Caution
Do not use fuel or fuel additives
that contain metallic compounds
such as manganese-based
additives. This may cause engine
damage.
Caution
Use of fuel that does not comply to EN 228 or equivalent can lead to
deposits or engine damage.
Caution
Use of fuel with a lower octane
rating than the lowest possible
rating could lead to uncontrolled combustion and engine damage.
The engine specific requirements
regarding octane rating are given in
the engine data overview 3 307. A
country-specific label at the fuel filler
flap can supersede the requirement.
Fuel additive
Fuel should contain detergent
additives that help prevent engine
and fuel system deposits from
forming. Clean fuel injectors and
intake valves will allow the emission
control system to work properly. In
certain countries fuel does not
contain sufficient quantities of
additive to keep fuel injectors and
intake valves clean. In these
countries a fuel additive is required for
some engines to make up for this lack
of detergency. Only use fuel additive
approved for the vehicle.
Adding fuel additive to the filled fuel
tank is required at least every 10,000 miles or after one year, whichever
occurs first. For further information,
contact your workshop.
Prohibited fuels
Fuels containing oxygenates such as
ethers and ethanol, as well as
reformulated fuel, are available in
some cities. If these fuels comply with the previously described
specification, then they are
acceptable to use. However, E85(85% ethanol) and other fuels
containing more than 15% ethanol
must be used only in FlexFuel
vehicles.Caution
Do not use fuel containing
methanol. It can corrode metal
parts in the fuel system and also
damage plastic and rubber parts.
This damage would not be
covered by the vehicle warranty.
Some fuels, mainly high octane
racing fuels, can contain an octane
enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). Do not use fuels or fuel additives with MMT as they can
reduce spark plug life and affect
emission control system
performance. The malfunction
indicator light Z may illuminate
3 106. If this occurs, seek the
assistance of a workshop.
Vehicle care275No.Circuit18Body control module19AdBlue module20Body control module21Body control module22Body control module23Electric steering wheel lock24Airbag25Diagnostic connector26Power outlet load compartment27EBCM valve28Police provision29–30–31Steering wheel controls32Ignition switch33Climate control34Central gateway moduleNo.Circuit35AUX/USB connector36Wireless charger37Rear wiper38OnStar module39Display40Parking assist41Overhead console42Infotainment SystemVehicle tools
Tools
Vehicles with spare wheel
The jack with wheel wrench, the tools,
an extension bolt for securing a
damaged wheel and the towing eye
are placed in the tool box below the
spare wheel in the load compartment. Spare wheel 3 288.
280Vehicle careilluminates. For the further three
wheels the system remains
operational.
The use of commercially available
liquid tyre repair kits can impair the
function of the system. Factory-
approved repair kits can be used.
Operating electronic devices or being close to facilities using similar wave
frequencies could disrupt the tyre
pressure monitoring system.
Each time the tyres are replaced tyre
pressure monitoring system sensors
must be dismounted and serviced.
For the screwed sensor replace valve
core and sealing ring, for clipped
sensor replace complete valve stem.
Use only original plastic valve caps to protect valve on any damage.Caution
Do not use metal valve caps as
they lead to valve oxidation and
damage.
Vehicle loading status
Adjust tyre pressure to load condition
according tyre information label or
tyre pressure chart 3 317, and select
the appropriate setting in the Tyre
loading page under the Settings
menu in the Driver Information Centre 3 111. This setting determines the
reference pressures for the tyre
pressure warnings.
Depending on the display, the menu
Tyre loading only appears if the
vehicle is at a standstill and the
parking brake is applied. On vehicles
with automatic transmission the
selector lever must be in P.Select:
● Light for comfort pressure up to
3 people.
● Eco for Eco pressure up to
3 people.
● Max for full loading.
Auto learn function After changing wheels or wheel
positions the vehicle must be
stationary for approx. 20 minutes,
before the system recalculates. The
following relearn process takes up to
10 minutes of driving in a speed range
of 25 to 60 mph. Avoid to drive outside
of this range for a longer time. If
possible, use a country road or similar which allows continuous driving.
During relearn process $ can be
displayed or pressure values can
swap in the Driver Information Centre.
If problems occur during the relearn
process, a failure message is
displayed in the Driver Information
Centre. w will flash for 60 seconds
and then illuminate continuously.
284Vehicle care
1. Remove the electrical connectioncable and air hose from the
stowage compartments on the
underside of the compressor.
2. Type 1: screw the compressor air
hose to the connection on the
sealant bottle and fit the sealant
bottle into the retainer on the
compressor.
Type 2: remove screw plug from
the compressor and from the
sealant bottle. Screw the bottle on the compressor without removing
the tinfoil from the bottle.
3. Set the compressor near the tyre in such a way that the sealant
bottle is upright.
4. Unscrew valve cap from defective
tyre.
5. Type 1: screw the filler hose to the
tyre valve.
Type 2: remove protection cap
from filler hose and screw the filler
hose to the tyre valve. The air
Vehicle care285release valve must be closed (turnclockwise).
6. The switch on the compressor must be set to J.
7. Connect the compressor plug to the power outlet or cigarette
lighter socket.
To avoid discharging the battery,
we recommend running the
engine.
8. Set the rocker switch on the compressor to I. The tyre is filled
with sealant.
9. The compressor pressure gauge briefly indicates up to 6 bar whilstthe sealant bottle is emptying
(approx. 30 seconds). Then the
pressure starts to drop.
10. All of the sealant is pumped into the tyre. Then the tyre is inflated.
11. The prescribed tyre pressure should be obtained within
10 minutes. Tyre pressure
3 317 . When the correct pressure
is obtained, switch off the
compressor.
Do not run the compressor longer than 10 minutes.
Type 1: if the tyre pressure is not
obtained within 10 minutes,
remove the tyre repair kit. Move
the vehicle one tyre rotation.
Reattach the tyre repair kit and
continue the filling procedure for
10 minutes. Check tyre pressure
once more. If the prescribed tyre
pressure is still not obtained, the
tyre is too badly damaged. Seek
the assistance of a workshop.
Drain excess tyre pressure with
the button over the pressure
indicator.
Depending on version the button
can be located on the air hose.
286Vehicle careType 2: remove tyre repair kit and
drive immediately up to 6 miles,
but not longer than 10 minutes.
Check tyre pressure once more. If
the tyre pressure is not obtained,
reattach the tyre repair kit and
continue the filling procedure for
10 minutes. If the prescribed tyre
pressure is still not obtained, the
tyre is too badly damaged. Seek
the assistance of a workshop.
If the pressure is obtained, correct to the prescribed tyre pressure byusing the compressor to increase
or decrease by opening the air
release valve (turn anticlockwise)
at the air filler hose.
12. Detach the tyre repair kit. Type 1: push catch on bracket to
remove sealant bottle from
bracket. Screw tyre inflation hose
to the free connection of sealant
bottle. This prevents sealant from
escaping.
Type 2: Sealant bottle can not be
removed from the compressor.
Have the sealant bottle replaced
by your workshop.13. Stow tyre repair kit in the load compartment.
14. Remove any excess sealant using a cloth.
15. Take the label indicating maximum permitted speed from
the sealant bottle and affix in the
driver's field of view.
16. Continue driving immediately so that sealant is evenly distributed
in the tyre. After driving approx.
6 miles (but no more than
10 minutes), stop and check tyre
pressure. Screw compressor air
hose directly onto tyre valve.
If tyre pressure is more than
1.3 bar , set it to the correct value.
Repeat the procedure until there
is no more loss of pressure.
If the tyre pressure has fallen
below 1.3 bar, the vehicle must
not be used. Seek the assistance
of a workshop.
17. Stow away tyre repair kit in the box.
18. Fix the box with the screw.
Notice
The driving characteristics of the
repaired tyre are severely affected,
therefore have this tyre replaced.
If unusual noise is heard or the
compressor becomes hot, turn
compressor off for at least 30 min.
The built-in safety valve opens at a
pressure of 7 bar (102 psi).
Note the expiry date of the kit. After
this date its sealing capability is no
longer guaranteed. Pay attention to
storage information on sealant
bottle.
Replace the used sealant bottle. Dispose of the bottle as prescribed
by applicable laws.
290Vehicle careSome versions have sill panels
with covered vehicle jacking points: pull out the cover at the
respective jacking point firstly.
4. Set the jack to the necessary height. Position it directly below
the jacking point in a manner that
prevents it from slipping.
Attach wheel wrench and with the
jack correctly aligned rotate wheel wrench until wheel is clear of the
ground.
5. Unscrew the wheel nuts. 6. Change the wheel.
7. Screw on the wheel nuts.
8. Lower the vehicle and remove jack.
9. Install the wheel wrench ensuring that it is located securely and
tighten each nut in a crosswise
sequence. Tightening torque is
140 Nm for all models except GSi.
GSi models have a tightening
torque of 190 Nm
10. Align the valve hole in the wheel cover with the tyre valve before
installing.
Install wheel nut caps.
11. Install vehicle jacking point cover.
12. Stow and secure the replaced wheel, the vehicle tools 3 275 and
the adapter for the locking wheel
nuts 3 72.
13. Check the tyre pressure of the installed tyre and the wheel nut
torque as soon as possible.
Stowing the replaced full size
wheel in the spare wheel well
Secure a damaged full size wheel facing upwards with the wing nut in
the spare wheel well after mounting
an extension bolt on the thread bolt.
The extension bolt is stowed with the
vehicle tools 3 275. To secure the
wheel: