ProblemPossible causes/consequences andMSolutions
XLeave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
XCheck the coolant level and add coolant, observing the warning
notes (
Ypage 539).
XIf you have to add coolant frequently, have the engine cooling
system checked.
XMake sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
XAt coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
XAvoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic.
Driving systems
ProblemPossible causes/consequences and MSolutions
·
The red distance warn-
ing lamp lights up while
the vehicle is in motion.
A warning tone also
sounds.You are approaching a vehicle or a stationary obstacle in your line
of travel at too high a speed.
XBe prepared to brake immediately.
XPay careful attention to the traffic situation. You may have to
brake or take evasive action.
Observe the additional information on DISTRONIC PLUS
(
Ypage 182).
Observe the additional information on PRE‑SAFE
®Brake
(
Ypage 77).
280Warning and indicator lamps
On-board computer and displays
Datastored in th evehicle
A wide range of electronic component sin
your vehicle contain dat amemories .
These dat amemories temporarily or perma-
nently stor etechnical information about :
RThe vehicle'soperatin gstat e
RIncidents
RMalfunction s
In general, this technical information docu-
ments th estat eof acomponent , amodule, a
system or th esurroundings.
These include, fo rexample:
Roperatin gcondition sof system compo -
nents, e.g. flui dlevels
Rth evehicle' sstatus message sand those of
it s individual components, e.g. number of
whee lrevolutions/speed, deceleration in
movement, latera lacceleration ,accelera-
to rpeda lposition
Rmalfunction sand defects in important sys-
te m components, e.g. lights ,brake s
Rvehicle reaction sand operatin gcondition s
in special drivin gsituations, e.g. air bag
deployment, intervention of stability con-
trol systems
Rambien tconditions, e.g. outsid etempera-
ture
Thi sdat ais of an exclusively technical nature
and can be used to :
Rassist in recognizingand rectifyin gmal-
function sand defects
Ranalyz evehicle functions, e.g. after an acci-
den t
Roptimize vehicle function
The dat acanno tbe used to trace th evehicle' s
movements .
Whe nyour vehicle is serviced, technical infor-
mation can be rea dfrom th eevent dat amem -
or yand malfunction dat amemory.
Services include, fo rexample:
Rrepair services
Rservic eprocesse s
Rwarranties
Rqualityassurance
It is rea dby employee sof th eservic enetwor k
(includin gmanufacturers) usin gspecial diag -
nostic devices. Mor edetailed information is
obtained from it ,if required.
Afte r amalfunction has been rectified, th e
information is delete dfrom th emalfunction
memor yor is continually overwritten.
Whe noperatin gth evehicle, situation sare
conceivable in whic hthis technical data, in
connection wit hother information (if neces-
sary, under consultation wit han authorized
expert) ,could be trace dto aperson .
Examples include:
Racciden treports
Rdamage to th evehicle
Rwitness statement s
Further additional function sthat hav ebeen
contractually agreed upon wit hth ecustomer
allow certain vehicle dat ato be conveyed by
th evehicle as well. The additional funct ions
i
nclude, fo rexample, vehicle location in cas e
of an emergency.
Qualified specialist workshop
Read th einformation on qualified specialist
workshop sin th evehicle Operator's Manual.
Information on copyrigh t
General information
Information on licenses fo rfree and Ope n
Sourc esoftware used in your vehicle and in
th eelectronic component scan be found on
this website: http://www.mercedes-
benz.com/opensource .
286Operating safety
COMAND
