ECU MERCEDES-BENZ E-CLASS ESTATE 2012 Workshop Manual

Safety systems
Problem Possible causes/consequences and
M Solutions
J
The yellow brake sys-
tem warning lamp
lights up while the
engine is running. G
WARNING
The brake system is malfunctioning and the braking characteris-
tics may be affected.
There is a risk of an accident.
X If the multifunction display shows a display message, please
observe this.
X Drive on carefully.
X Visit a qualified specialist workshop. J
The red brake system
warning lamp comes on
while the engine is run-
ning. A warning tone
also sounds.
G
WARNING
The brake boosting effect is malfunctioning and the braking char-
acteristics may be affected.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 183).
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction
display. J
The red brake system
warning lamp comes on
while the engine is run-
ning. A warning tone
also sounds.
There is insufficient brake fluid in the brake fluid reservoir.
G WARNING
The braking efficiency may be impaired.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 183).
X Do not top up the brake fluid. Topping up will not rectify the
fault.
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction
display. 300
Indicator and warning lamps in the instrument clusterOn-board computer and displays

Engine
Problem Possible causes/consequences and
M Solutions
;
The yellow engine diag-
nostics warning lamp
lights up while the
engine is running.
There may be a fault, for example:
R in the engine management
R in the fuel injection system
R in the exhaust system
R in the ignition system (for vehicles with petrol engines)
R in the fuel system
The emission limit values may be exceeded and the engin emay
be running in emergency mode.
X Have the vehicle checked as soon as possible at a qualified
specialist workshop. Vehicles with a diesel engine: the fuel tan
khas been run dry
(Y page 182).
X Start the engine three to four times after refuelling.
If the yellow engine diagnostics warning lamp goes out, emer-
gency running mode is cancelled. The vehicle need no tbe
checked. 8
The yellow reserve fuel
warning lamp lights up
while the engine is run-
ning.
The fuel level has dropped into the reserve range.
Operation of the auxiliary heating is deactivated if the fuel level
drops into the reserve range.
X
Refuel at the nearest filling station. ?
The red coolant warn-
ing lamp lights up while
the engine is running
and the coolant tem-
perature gauge is at the
star toft he scale. The temperature sensor for the coolant temperature gauge is
faulty.
The coolant temperature is no longer being monitored. There is a
risk of engine damage if the coolant temperature is too high.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 183).
X Consult a qualified specialist workshop. Indicator and warning lamps in the instrument cluster
305On-board computer and displays Z

Problem Possible causes/consequences and
M Solutions
?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning.
The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator
may be blocked or the electric engine radiator fan may be mal-
functioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X
Observe the additional display messages in the multifunction
display.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Secure the vehicle against rolling away (Y page 183).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and top up the coolant, observing the
warning notes (Y page 348).
X If you have to top up the coolant frequently, have the engine
cooling system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.
X Do not start the engine again until the coolant temperature is
under 120 †. The engine may otherwise be damaged.
X Drive to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in
mountainous terrain and stop-start traffic. ?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning. A warning tone
also sounds.
The coolant temperature has exceeded 120 †. The airflow to the
engine radiator may be blocked or the coolant level may be too
low.
G WARNING
The engine is not being cooled sufficiently and may be damaged.
Never drive with an overheated engine. Driving when your engine
is overheated can cause some fluids which may have leaked into
the engine compartment to catch fire.
Steam from an overheated engine can cause serious burns, which
can occur just by opening the bonnet.
This poses a risk of injury.
X Observe the additional display messages in the multifunction
display.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Secure the vehicle against rolling away (Y page 183).306
Indicator and warning lamps in the instrument clusterOn-board computer and displays

Tyres
Problem Possible causes/consequences and
M Solutions
h
The yellow tyre pres-
sure monitor warning
lamp is on. The tyre pressure monitor has detected a loss of pressure in at
leas
tone of the tyres.
G WARNING
With tyre pressures which are too low, there is a ris kofthe fol-
lowing hazards:
R the tyres may burst, especially as the load and vehicle speed
increase.
R the tyres may wear excessively and/or unevenly, which may
greatly impair tyre traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
manoeuvres. Pay attention to the traffic conditions as you do
so.
X Secure the vehicle against rolling away (Y page 183).
X Observe the additional display messages in the multifunction
display.
X If there is a flat tyre, inspect the tyres (Y page 363).
X Check the tyre pressure (Y page 386).
X If necessary, correct the tyre pressure. 308
Indicator and warning lamps in the instrument clusterOn-board computer and displays

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos-
sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 25). Stowage areas
Loading guidelines
G
WARNING
Secure and position the load as described in
the loading guidelines.
Otherwise, vehicle occupants could
be injured by the load being thrown around in
the even tofsharp braking, a sudden change
in direction or an accident.
You will find further information in the "Secur-
ing a load" section.
Even if you follow all the loading guidelines,
the load will increase the risk of injury in the
event of an accident. G
WARNING
Keep the boot lid/tailgate closed while the
vehicle is in operation. Otherwise, exhaust
fumes could enter the vehicle interior and poi-
son you.
The handling characteristics of a laden vehi-
cle are dependent on the distribution of the
load within the vehicle. For this reason, you
should observe the following notes when
transporting a load:
R when transporting a load, never exceed the
maximum permissible gross vehicle weight or the permissible axle loads for the vehicle
(including occupants).
R position heavy loads as far forwards as pos-
sible and as low down in the boot/luggage
compartmenta s possible.
R the load must not protrude above the upper
edge of the seat backrests.
R always place the load against the rear or
front seat backrests. Make sure that the
seat backrests are securely locked into
place.
R always place the load behind unoccupied
seats if possible.
R secure the load with sufficiently strong and
wear-resistant lashing material. pad sharp
edges for protection.
i Load restraints are available at any quali-
fied specialist workshop, e.g. a Mercedes-
Benz Service Centre. Stowage compartments
Important safety notes G
WARNING
The stowage compartments must be closed
when items are stored in them. Luggage nets
are not designed to secure heavy items of
luggage.
You or other vehicle occupants could be
injured by objects being thrown around if you:
R brake sharply
R change direction suddenly
R are involved in an accident
Sharp-edged and fragile objects must not be
placed in the luggage net.
Do not place hard objects in the map pockets.
Objects must not protrude from the map
pockets. 310
Stowage areasStowing and features

an accident, the luggage net will no
tsecure
the transported goods.
Luggage nets are located in the front-
passenger footwell and on the left and right-
hand sides of the boot/luggage compart-
ment. Skibag
Unfolding the skibag and loading skis G
WARNING
The skibag is designed to carry up to four pairs
of skis. Do not use the skibag to carry any
other type of load.
The skibag must always be secured when
laden. Otherwise, injuries could be caused by
it in the event of an accident. X
Fold down the rear seat armrest.
X Press release catches ;together and fold
down cover :. X
Pull skibag :into the vehicle interior and
unfold it.
X Open the boot lid. X
Press release catch :.
The flap opens downwards.
X Slide the skis into the skibag from the boot. X
Pull strap :tight by the loose end until the
skis are held firmly inside the skibag. X
Engage hook :in securing ring ;.
X Pull the strap tight by the loose end. 314
Stowage areasStowing and features

Removing the skis and folding up the
skibag
X
Loosen the two straps.
X Remove hook :from securing ring ;.
X Take the skis ou tofthe skibag.
X Close the flap in the boot.
X Smooth out the skibag and fold it up.
X Put the skibag into the backrest.
X Fold the cover back up.
i You should always close the flap in the
boot if you do not require the skibag. This
will prevent unauthorised access to the
boot from the vehicle interior.
Removing the skibag G
WARNING
When the skibag has been removed, always
drive with the boot lid closed. Otherwise,
exhaust fumes could enter the vehicle inte-
rior. The skibag can be removed for cleaning or
drying. X
Open the boot lid.
X Press release catch :.
Flap ;folds down.
X Press catch =in and pull out frame ?
containing the skibag. Through-loading facility in the rear
compartment
The through-loading facility is opened from
the boot.
X
Fold down the rear seat armrest.
X Press release catch :.
The flap opens downwards. Through-loading facility in the rear
bench seat (Saloon)
Important safety notes G
WARNING
Do not carry heavy or hard objects inside the
vehicle or in the boot unless they are secured.
Otherwise, you and other vehicle occupants
could be injured by objectsb eing thrown
around the vehicle in the event of sharp brak-
ing, a sudden change in direction or an acci-
dent. G
WARNING
Always drive with the boot lid closed. Exhaust
fumes could otherwise enter the vehicle inte-
rior. Stowage areas
315Stowing and features Z

X
Move the driver's or front-passenger seat
forward if necessary.
X Fold rear seat backrest :back until it
engages.
X Adjust the head restraints if necessary
(Y page 110).
X Move the driver's or front-passenger seat
back if necessary.
i You should always engage the rear seat
backrests if you do not need the through-
loading feature. This will prevent unauthor-
ised access to the boot from the vehicle
interior. EASY-PACK through-loading facility in
the rear bench seat (Estate)
Important safety notes G
WARNING
Do not carry heavy or hard objects inside the
vehicle or in the luggage compartmen tunless
they are secured.
Otherwise, you and othe rvehicle occupants
could be injured by objects being thrown
around the vehicle in the event of sharp brak-
ing, a sudden change in direction or an acci-
dent.
When using the enlarged luggage compart-
ment, always clip in the safety net. G
WARNING
Always drive with the tailgate closed. Exhaust
fumes could otherwise enter the vehicle inte-
rior.
Folding the rear seat backrest forward !
Before you fold down the rear seat back-
rest, remove the side head restraints for
the integrated child seat; see the "Side
head restraints for integrated child seat"
section. The side head restraints could oth-
erwise be damaged. !
When folding the rear seat backrest for-
wards, ensure that there are no items lying
on the seat cushions .These items could
otherwise be damaged or could themselves
damage the rear seats. The left-hand and right-hand rear seat backr-
ests can be folded forwards separately to
increase the luggage compartmentc
apacity.
The combined luggage cover and ne tcan
remain installed.
i When you fold one or bot hparts of the
rear seat backrests forwards, the headr-
ests are also lowered if necessary. In the
case of vehicles with memory function, the
respective fron tseat is moved forwards
slightly to avoid contact with the seat
behind it. Stowage areas
317Stowing and features Z

X
Vehicles without memory function: if nec-
essary, move the driver's or front-
passenger seat forwards.
X Pull the left-hand or right-hand release han-
dle at the rear in load compartment :or
at the side beside backrests ;.
The corresponding backrest folds for-
wards.
X Pull back the left or right release lever in
the luggage compartment :.
The corresponding backrest folds for-
wards.
X Move the driver's or front-passenger seat
back if necessary.
Folding the rear seat backrest back G
WARNING
Make sure that the rear seat backrest is cor-
rectly engaged. Otherwise, vehicle occupants
could be injured by objects being thrown
around if you:
R brake sharply
R change direction suddenly
R are involved in an accident
If the rear seat backrest is not engaged, this
will be shown in the multifunction display in
the instrument cluster.
! Make sure that the seat belt does not
become trapped when folding the rear seat
backrest back. Otherwise, it could be dam-
aged. X
Move the driver's or front-passenger seat
forward if necessary.
X Fold seat backrest :back until it engages.
X Adjust the head restraints if necessary
(Y page 110).
X Move the driver's or front-passenger seat
back if necessary. Securing
aload
Plastic hooks (Saloon) On vehicles without a through-loading feature
in the rear bench seat, six plastic hooks are
fitted to the boot floor. You can use these to
attach the luggage securing fixture, which is
available as an accessory.
Lashing eyelets General notes
G
WARNING
Distribute the load on the lashing eyelets
evenly.
Otherwise, vehicle occupants could be
injured by objects being thrown around if you:
R brake sharply
R change directio nsuddenly
R are involved in an accident
Please observe the loading guidelines. 318
Stowage areasStowing and featu
res

Observe the following notes on securing
loads:
R
secure the load using the lashing eyelets.
R do not use elastic straps or nets to secure
a load, as these are only intended as an
anti-slip protection for light loads.
R do not route lashing materials across sharp
edges or corners.
R pad sharp edges for protection.
Boot/luggage compartment Saloon
:
Lashing eyelets Estate
:
Lashing eyelets
There are six lashing eyelets in the boot/lug-
gage compartment.
Bag hook G
WARNING
Only hang light loads on the bag holders. Do
not use them to transport heavy, sharp-edged
or fragile objects. When braking sharply, changing direction quickly or in the event of
an accident, the bag hooks will not secure the
items sufficiently. This could result in injury to
yourselforo
thers.
! The bag hoo kcan bear a maximum load
of 3 kg. Do not use it to secure a load. Saloon
X
Pull bag hook ;down by tab :. Estate
X
To open: press bag hook :(arrow).
Bag hook :slides out.
X To close: press bag hook :until it
engages. EASY-PACK luggage compartment
cover
Important safety notes G
WARNING
The luggage compartmen tcover is not a
restraint system. Secure the load under the Stowage areas
319Stowing and features
Z