2009 MERCEDES-BENZ E-CLASS SALOON coolant

Problem
Possible causes/consequences and
X XSolutions Vehicles with a petrol
engine:
The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or a mechanical
component of the engine control unit.
X
Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at a qualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it. The coolant tempera-
ture gauge shows a
value above 120 †.
The coolant warning
lamp may also light up
and a warning tone may
sound (Y
page 117). The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X
Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 221). Observe the warning
notes as you do so and top up the coolant if necessary. If the coolant level is correct, the radiator fan may be faulty. The
coolant is too hot and the engine is no longer being cooled suffi-
ciently.
X
If the coolant temperature is less than 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop/start driving. 292
TroubleshootingPractical advice
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Vehicle identification plate illustration
:
Vehicle identification plate
; Vehicle manufacturer
= EU type approval number
? Vehicle identification number (VIN)
A Maximum permissible gross vehicle
weight
B Maximum permissible towing weight
C Maximum permissible front axle load
D Maximum permissible rear axle load
E Paint code Vehicle identification number (VIN)
In addition to being stamped on the vehicle
identification plate, the vehicle identification
number (VIN) is also stamped onto the vehicle
body. It is located on the floor in front of the
right-hand front seat. X
Slide the right-hand front seat to its rear-
most position.
X Fold floor covering :upwards.
You will see vehicle identification number
(VIN) ;. Engine number
The engine number is stamped on the crank-
case. More information can be obtained from
any Mercedes-Benz Service Centre. Service products and capacities
Service products include the following:
R fuels (e.g. petrol, diesel)
R exhaust gas aftertreatment additive
(AdBlue ®
)
R lubricants (e.g. engine oil, transmission oil)
R coolant
R brake fluid
R windscreen washer concentrate
Mercedes-Benz recommends that you only
use products which have been tested and
specially approved by Mercedes-Benz for
your vehicle and which are listed in this
Mercedes-Benz Owner's Manual in the rele-
vant chapter since:
R parts and service products are matched.
R damage caused by the use of non-approved
service products is not covered by the
implied warranty.
You can recognise service products approved
by Mercedes-Benz by the following inscrip-
tion on the containers:
R MB-Freigabe (e.g. MB-Freigabe 229.51)
R MB Approval (e.g. MB Approval 229.51)
Other designations or recommendations that
relate to a level of quality or a specification in
accordance with an MB Sheet number (such Service products and capacities
333Technical data
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Vehicle model Capacity including
oil filter E 350 4MATIC 7.0 l
E 300
49
E 350 49
E 350 CGI BlueEF-
FICIENCY
E 350 CDI BlueEF-
FICIENCY
E 350 BlueTEC 8.0 l
E 63 AMG
8.0 l (8.8 l
50
) E 500
E 500 4MATIC 8.5 l
Coolant
The coolant is a mixture of water and anti-
freeze/corrosion inhibitor. It performs the
following tasks:
R anti-corrosion protection
R antifreeze protection
R raising the boiling point
i When the vehicle is first delivered, it is
topped up with a coolant that will ensure
adequate antifreeze and corrosion protec-
tion.
! Only top up with coolant that has been
premixed with the desired antifreeze pro-
tection. You could otherwise damage the
engine.
Further information on coolants and on fill-
ing can be found in the Mercedes-Benz
Specifications for Service Products, Sheet
310.1, or at any Mercedes-Benz Service
Centre. !
Always use a suitable coolant mixture,
even in countries where high temperatures
prevail.
Otherwise, the cooling system will not be
sufficiently protected from corrosion, and
the boiling point will be too low.
If antifreeze/corrosion inhibitor is present in
the correct concentration, the boiling point of
the coolant will be around 130 †.
The antifreeze/corrosion inhibitor concentra-
tion in the cooling system should:
R be at least 50%. This will protect the cooling
system against freezing down to around
-37 †.
R not exceed 55% (antifreeze protection
down to -45 †); otherwise, heat will not be
effectively dissipated.
If the vehicle has lost coolant, top it up with
equal amounts of water and antifreeze/cor-
rosion inhibitor. Mercedes-Benz recom-
mends an antifreeze/corrosion inhibitor
which has been approved for Mercedes-Benz.
! The cooling system contains a supply
which must be renewed after 15 years, or
after 250, 000 km at the latest.
The warranty is only valid if you top up with
an antifreeze/corrosion inhibitor which
has been approved by Mercedes-Benz and
if the recommended mixture ratio is
observed. Brake fluid
Over a period of time, the brake fluid absorbs
moisture from the air; this lowers its boiling
point. G
Risk of accident
If the boiling point of the brake fluid is too low,
vapour pockets may form in the brake system
when the brakes are applied hard (e.g. when
49 Only for certain countries.
50 Capacity including oil filter and external oil cooler. 338
Service products and capacitiesTechnical data
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