2021 MERCEDES-BENZ V-CLASS heating

#
Press button 4. #
Use button 1or3 toset the minutes. #
Press button 4.
Se
Se tting t
tting t he time f
he time f or
ormat
mat #
Press button 1or3 until 4 0ashes on
menu bar 2. #
Press button 4. #
Press button 1or3 until the symbol forthe
time form at 0ashes. #
Press button 4. #
Select the desired time form at using button 1
or 3. #
Press button 4.
Se
Se tting t
tting t he day
he day #
Press button 1or3 until 4 0ashes on
menu bar 2. #
Press button 4. #
Press button 1or3 until the symbol forthe
day 0ashes. #
Press button 4. #
Use button 1or3 toselect the desired day
of thewe ek. #
Press button 4.
Switc
Switc hing immediat
hing immediat e heating mode
e heating mode on/o.
on/o. #
T
To switc
o switc h on:
h on: press button 4until y
0ashes on menu bar 2.
On will brie0y appear on the displa y,follo wed
by there maining operating duration or the
à symbol for continuous operation. #
T
To switc
o switc h
h o.:
o.: press button 4until Off
appears on the displa y.
Se
Se tting t
tting t he depar
he depar tur
ture time (auxiliar
e time (auxiliar y w
y war
arm-air
m-air
heat
heat er)
er)
Yo u can set thre e departure times with the switch
cloc k.Fo llowing malfunctions or if the battery has
been disconnected, you will need tore-set the
departure times.
Selecting a pr Selecting a pr ogr
ogram memory
am memory #
Press button 1or3 until j0ashes on
menu bar 2. #
Press button 4.
The numbers of the prog ram memories are
shown on status bar 5. The tick denotes acti-
va ted prog ram memories. #
Use button 1or3 toselect the desired pro-
gr am memor y. #
Press button 4.
A
A ctiv
ctiv ating/deactiv
ating/deactiv ating pr
ating progr
ogram memor
am memor ies
ies #
Use button 1or3 toselect OnorOff. #
Press button 4.
Editing pr
Editing pr ogr
ogram memor
am memor ies
ies #
Use button 1or3 toselect 4. #
Press button 4. #
Set the day of thewe ek and the time
(/ page 133).
Se
Se tting t
tting t he t
he tem
emper
per atur
atur e and oper
e and oper ating dur
ating duration
ation
(auxiliar
(auxiliar y w
y war
arm-air heat
m-air heat er)
er) #
Press button 4. #
Set thete mp erature with button 1or3. #
Press button 4. #
Set the operating duration with button 1or
3 or select theà symbol for continuous
operation. #
Press button 4.
% The operating duration set is the default set-
ting for immediate heating mode. You can set
th e operating duration within a range of 10 to
120 minutes or tocontinuous operation.
R
R ectifying pr
ectifying pr oblems wit
oblems with t
h the auxiliar
he auxiliar y w
y war
arm-air
m-air
heat
heat er
er
The messag
The messag e
eERROR appear
appears on t
s on the switch
he switch
cloc
cloc k's displa y.
k's displ ay.
Po ssible cause:
R A malfunction has occur red. #
Have the auxiliary heating checked at a quali-
/ed specialist workshop.
The messag
The messag e
eINIT appear
appear s on t
s on the switc
he switc h cloc
h clock's
k's
displa y.
displa y.
Po ssible cause:
R The po wer supply has been inter rupted. All
sa ved settings ha vebeen dele ted.
Au tomatic hardware de tection is cur rently
active. #
When automatic ha rdwa redetection is com-
ple te, set the day of thewe ek, time and operat-
ing duration (/ page 133). #
Set the departure time (/ page 134). 134
134
Climate control

A
A
uxiliar
uxiliar y heating aut
y heating aut omaticall
omatically switc
y switches
heso.
o.and/or
and/or
canno
canno t be switc
t be switc hed on.
hed on.
Po ssible cause:
R The under voltage pr otection system integ rated
in the control unit switches auxiliary heating o.
as the on-board electrical system voltage is
below 10 V. #
Have thege nerator and the battery checked.
Po ssible cause:
R The elect rical fuse has blown. #
Replace the electrical fuse; see "Fuse assign-
ment" supplement. #
Have the cause of thefa ulty fuse in vestigated
at a quali/ed specialist workshop.
The ho
The ho t-air auxiliar
t-air auxiliar y heat
y heater has ov
er has overerheat
heat ed
ed
Po ssible cause:
R The air ducts are clogged. #
Ensure that the 0ow of hot air is not bloc ked. #
Have the auxiliary heating checked at a quali-
/ed specialist workshop. Climate cont
rol
135
135

*
N NO OTE
TE Damage totheve hicle due tonot
observing the maximum permitted head-
ro om clearance If
th eve hicle height is greater than the maxi-
mum permitted headroom clearance, thero of
and other parts of theve hicle may be dam-
aged. #
Obser vethe signposted headroom clear-
ance. #
Ifth eve hicle height is greater than the
permitted headroom clearance, do not
enter. #
Obser vethech anged vehicle height with
add-on roof equipment. N No
ot
tes on shor
es on shor t-dist
t-distance tr
ance tr ips
ips
If th eve hicle is predominantly used in short-dis-
ta nce driving, a fault in the automatic cleaning
function of the diesel particulate /lter can occur.
Due tothis, fuel may also accumulate inthe engine
oil and cause engine failure.
During automatic cleaning, extremely hot exhaust
ga ses escape from theex haust pipe. Main tain a
distance of at least 1 m toother objects, e.g.
par kedve hicles, in order toavo id material damage.
If yo u mainly drive short distances, you should
drive on a mo torw ay or go for a country drive for
20 minutes every 500 km. This facilitates the
re ge neration of the diesel particulate /lter.
Inf
Inf or
ormation about tr
mation about tr anspor
ansport b
t by r
y rail
ail
Tr ansporting your vehicle byrail may be subject to
cer tain restrictions or requ ire special measures to
be take n in some countries due tovarying tunnel
heights and loading standards.
Yo u can obtain information about this from a
Mercedes-Benz Service Centre.
Inf
Inf or ormation on br
mation on br ak
ak es
es &
W
WARNING
ARNING Risk of accident due tothe
brake system overheating
If yo u lea veyour foot on the brake pedal when
driving, the brake system may overheat.
This increases the braking distance and the
brake system can even fail. #
Never use the brake pedal as a foot re st. #
Do not depress the brake pedal and the
accelerator pedal at the same time while
driving. *
N NOOTE TE Causing wearto the brake linings by
permanently depressing the brake pedal #
Do not permanently depress the brake
pedal while driving. #
Touse braking e.ect of the engine, shiT
to a lo werge ar in good time. Do
Do
wnhill gr
wnhill gradients
adients
On long and steep downhill gradients you should
obser vethefo llowing inst ructions:
R invehicles with an automatic transmission,
shiT down toshiT ranges 2 2or 1 1in good time
so that the engine is running at a medium to
high engine speed (/ page 143).
R invehicles with a manual transmission, shiT
down toa lo werge ar in good time, so that the
engine is running at a medium tohigh engine
speed.
% Change the shiT range in good time when
cruise control or the limiter are activated.
Obser vethe driving tips (/ page 137).
Yo uth ereby make use of the braking e.ect of the
engine and do not ha vetobrake as oTen tomain-
ta in the speed. This relie vesth e load on the
service brake and pr events the brakes from over-
heating and wearing tooqu ickl y.
Hea
Hea vy and light loads
vy and light loads
If th e brakes ha vebeen subjected toa heavy load,
do not stop theve hicle immediatel y.Drive on for a
short while. The brakes cool down more quickly in
th e air0o w.
If th e brakes ha vebeen used only moderatel y,you
should occasionally test their e.ectiveness. Todo
th is, brake more /rmly from a higher speed while
paying attention tothe tra1c conditions. The
brakes will grip better as a result.
We
We t r
t road surf
oad surf aces
aces
If yo u ha vebeen driving for a long time in heavy
ra in without braking, there may be a dela yed
re sponse when you /rst apply the brakes. This may
also occur aTer driving thro ugh a car wash or deep
wa ter. Yo u must depress the brake pedal more
/rml y.Maintain a greater distance totheve hicle in
front.
While paying attention tothe tra1c conditions, you
should brake theve hicle /rml yaTer driving on a
we tro ad sur face or thro ugh a car wash. This heats
th e brake disks so that they dry more quickl y,
which pr otects them against cor rosion. 138 138
Driving and parking

drive at speed,
theve hicle is lo wered automatically
to impr ovedriving saf ety and toreduce fuel con-
sum ption. There is also the option of raising the
ve hicle le vel while driving slo wly, e.g. for driving o.
public roads. The AIRMATIC settings are depend-
ent on the drive prog ram selection.
AIRM ATIC consists of thefo llowing functions and
components:
R all-round air suspension
R speed-dependent lo wering toreduce fuel con-
sum ption
R high le velfo rgr eater ground clearance when
driving slo wly,fo rex ample o. public roads, set
with the LiTLiT F/¦ drive program
R DYNAMIC SELECT switch
% Forth e LiTLiT drive prog ram, the inst rument clus-
te r sho ws th eF symbol next tothe trans-
mission position displa y.The media display
sh ow sth e¦ menu.
V
V ehicle lev
ehicle lev els per dr
els per dr iv
ive pr
e pr ogr
ogram
am
Drive prog rams A and¥:
R theve hicle is set tonormal le vel
R at speeds abo veappr ox. 110 km/h, theve hi-
cle is lo wered
R at speeds below appr ox. 75 km/h, theve hicle
is raised again
Drive prog ram C:
R theve hicle is set tolow le vel
R at higher speeds, theve hicle le vel does not
continue tolower
Drive prog ram F/¦:
R theve hicle is set tohigh le vel
R at speeds abo veappr ox. 30 km/h, theve hicle
le ve l lo wersto the normal le vel
R at speeds below appr ox. 10 km/h, theve hicle
is raised again
R at speeds abo veappr ox. 100 km/h, theve hi-
cle switches todrive prog ram A
% Ifth eve hicle is raised in the LiTLiT drive prog ram
or lo wered when changing from the LiTLiT drive
prog ram to ano ther drive prog ram, occasional
creaking noises may occur at the brake.
% Oper
Oper ation wit
ation wit h a tr
h a trailer or bicy
ailer or bicy cle r
cle rac
ack:
k: ifthe
electrical connection has been cor rectly
es tablished, theve hicle remains on normal
le ve lre ga rdless of speed. Syst
Syst em limits
em limits
If ove rheating pr otection has been activated due to
se veral le velch anges in a short period of time,
AIRMATIC will not function or its availability will be
limi ted. The Compressor is cooling message is
shown in the multifunction displa y.
ATer the cooling phase, AIRMATIC is again availa-
ble without restrictions. R
R
efuelling
efuelling R
R
efuelling t
efuelling t he v
he vehicle
ehicle &
W
WARNING
ARNING Risk of/re orexplosion from
fuel
Fu els are highly 0ammable. #
Fire, naked 0ames, smoking and creating
spar ksmust be avoided. #
Before refuelling, switch o. theve hicle
and, if /tted, the stationary heater and
ke ep switched o. during /lling. &
W
WARNING
ARNING Risk of injury from fuels
Fu els are poisonous and hazardous toyour
health. #
Do not swallow fuel or let it come into
contact with skin, eyes or clo thing. #
Do not inhale fuel vapour. #
Keep children away from fuel. #
Keep doors and windo wsclosed during
th ere fuelling process.
If yo u or other people come into contact with
fuel, obser vethefo llowing: #
Immediate lyrinse fuel o. your skin with
soap and water. #
If fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical at tention
immedia tely. #
Ifyo u swallow fuel, seek medical atten-
tion immediatel y.Do not induce vomiting. #
Change immediately out of clo thing that
has come into contact with fuel. &
W
WARNING
ARNING Risk of /re and explosion due to
electrostatic charge
Electrostatic charge can ignite fuel vapour. 146
146
Driving and parking

#
Before you open the fuel /ller cap or take
hold of the pump nozzle, touch the met-
allic vehicle body. #
Toavo id creating ano ther electrostatic
ch arge , do not get into theve hicle again
during there fuelling process. &
W
WARNING
ARNING Risk of /re from fuel mixtu re
Ve hicles with a diesel engine:
If yo u mix diesel fuel with petrol, the 0ash point
of the fuel mixture is lo werth an that of pure
diesel fuel.
While theve hicle is running, component parts
in theex haust system may overheat without
wa rning. #
Neverre fuel using petrol. #
Never mix petrol with diesel fuel. *
N NOOTE
TE Do not use diesel torefuel vehicles
with a petrol engine If
yo u ha veacciden tally refuelled wi th the
wrong fuel:
R Do not switch on theve hicle. Otherwise
fuel can enter the engine.
Even small amounts of the wrong fuel
could result in damage tothe fuel system
and the engine. The repair costs are high. #
Consult a quali/ed specialist workshop. #
Have the fuel tank and fuel lines drained
comple tely. *
N
NO
OTE
TE Do not use petrol torefuel vehicles
with a diesel engine If
yo u ha veacciden tally refuelled wi th the
wrong fuel:
R Do not switch on theve hicle. Otherwise,
fuel can enter the fuel system.
Even small amounts of the wrong fuel
could result in damage tothe fuel system
and the engine. The repair costs are high. #
Consult a quali/ed specialist workshop. #
Have the fuel tank and fuel lines drained
comple tely. *
N
NO
OTE
TE Damage tothe fuel system caused
by ove r/lled fuel tanks #
Only /ll the fuel tank until the pump noz-
zle switches o.. R
R
eq
eq uir
uir ements:
ements:
R The vehicle is unloc ked and switched o..
R The auxiliary heating is switched o..
R The front leT-hand door is open.
% Do not getback into theve hicle during the
re fuelling process. Othe rwise, electrostatic
ch arge could build up again.
Obser vethe no tes on operating 0uids
(/ page 271). #
Open fuel /ller 0ap 1. #
Turn fuel /ller cap 2anti-clockwise and
re mo veit. #
Close all vehicle doors topreve nt fuel vapours
from entering theve hicle interior. #
Comple tely slide the /ller neck of the pump
nozzle into theta nk, hook in place and refuel. #
Fillth e fuel tank only until the pump nozzle
switches o.. #
Replace fuel /ller cap 2and turn it clockwise.
Yo u will hear a click when the fuel /ller cap is
closed full y. #
Open the front leT-hand door. #
Close fuel /ller 0ap 1.
% V
Vehicles wit
ehicles wit h a diesel engine and incorr
h a diesel engine and incorr ect
ect
fuelling pr ot
fuelling prot ect
ector ag
or ag ains
ainst rt refuelling wit
efuelling wit h pe
h pet-
t-
r
r ol:
ol: the /ller neck is designed forre fuelling at
diesel /lling pumps for passenger vehicles. Driving and parking
147
147

%
V
Vehicles wit
ehicles wit h a diesel engine wit
h a diesel engine wit hout an incor-
hout an incor-
r
r ect fuelling pr ot
ect fuelling pr otect
ect or
or:
:re fuelling prefer red at
diesel /lling pumps for passenger vehicles.
Ho wev er,you can also refuel at a diesel /lling
pump for lor ries.
% Ifth e fuel tank has been run comple tely dry,
to p up with at least 5 l of fuel. Switch on the
ve hicle thre eto four times before starting the
ve hicle.
% Vehicles that can use a mixtu reof fuels can be
re cognised bythe stic ker "Ethanol up toE85!"
on the fuel /ller 0ap. A
A
dBlue
dBlue ®
® N
No
ot
tes on A
es on A dBlue
dBlue®
®
Ad Blue ®
is a water-soluble 0uid forth eex haust gas
aTertreatment of diesel engines. In order forthe
ex haust gas aTertreatment tofunction proper ly,
only use AdBlue ®
in acco rdance with ISO 22241.
Ad Blue ®
has thefo llowing properties:
R non-t oxic
R colourless and odourless
R non-0ammable
If yo u open theAd Blue ®
tank, small amounts of
ammonia vapour may be released. Fillth eAd Blue ®
ta nk only in well-ventilated areas.
Do not let AdBlue ®
come into contact with skin,
ey es or clo thes. Keep AdBlue ®
awa y from children.
Do not ingest AdBlue ®
. If AdBlue ®
is swall owed,
immediately rinse your mouth out thoroughl y.
Drink plenty of water. Seek medical at tention at
once.
Obser vethe no tes on the operating 0uid AdBlue ®
(/ page 274).
Ad Blue ®
av ailabilit y:
R AdBlue ®
can be topped up at a quali/ed spe-
cialist workshop, e.g. a Mercedes-Benz Service
Centre.
R AdBlue ®
is available at nume rous /lling sta-
tions via AdBlue ®
/lling pumps.
R Alternati vely,Ad Blue ®
is available at quali/ed
specialist workshops, e.g. a Mercedes-Benz
Service Centre, and at nume rous /lling sta-
tions as an AdBlue ®
re/ll canis ter or AdBlue ®
re /ll bottle.
% Ensure the connection between there /ll con-
ta iner and vehicle /ller neck does not drip. Calling up t
Calling up t he A he AdBlue
dBlue ®
®
r
rang
ang e and A
e and A dBlue
dBlue®
®
/ll
/ll lev
level
el
display
display
On-board computer:
4 Service 5
AdBlue
Ad Blue ®
freezes at a temp erature of appr oximately
-11°C. The vehicle is equipped with an AdBlue ®
preheating system at thefa ctor y.This means that
winter operation is also ensu redfo rte mp eratures
below -11°C. If youto p up AdBlue ®
at temp era-
tures below -11°C, theAd Blue ®
leve l in the inst ru-
ment cluster may not be displa yed cor rectl y.Ifthe
Ad Blue ®
is frozen, drive for at least 20 minutes
and then park theve hicle for a minimum of 30 sec-
onds, so that the le vel is cor rectly displa yed. In
ex treme winter conditions, the time needed to
de tect the amount topped up may be considerably
longer. Park theve hicle in a warm garage tospeed
up this process. #
Call up the menu.
The inst rument cluster display will show the
Ad Blue ®
leve l.
T T opping up A
opping up A dBlue
dBlue®
®
* NO
NOTE
TEEngine damage due toAd Blue ®
being in the fuel #
AdBlue ®
must not be used to/ll the fuel
ta nk. #
Only use AdBlue ®
to /ll theAd Blue ®
ta nk. #
Do not over/ll theAd Blue ®
tank. *
N
NOOTE
TE Contamination of theve hicle interior
due toAd Blue ®
lea kage #
ATer topping up, carefully close the
Ad Blue ®
re/ll con tainer. #
Avoid car rying AdBlue ®
re/ll con tainers
permanently in theve hicle. *
N
NOOTE
TE Over/lling theAd Blue ®
tank due to
th eve hicle standing at an angle The
AdBlue ®
tank can only be /lled as inten-
ded when theve hicle is par ked on a le vel sur-
fa ce. This way,va riations in the /lling amount
are avoided.
When /lling there ser voir when theve hicle is
standing at an angle, there is a risk of over/ll-
ing. This may damage exhaust gas aTertreat-
ment components. 148
148
Driving and parking

#
Park theve hicle on a le vel sur face to/ll
th eAd Blue ®
tank. R
R
eq
eq uir
uir ements:
ements:
R The auxilia ryheating is switched o..
R The vehicle is switched o..
R The front leT-hand door is open.
The following message sth at appear in succession
in the inst rument cluster display indicate that you
need tore/ll theAd Blue ®
tank:
R Refill AdBlue See Owner's Manual
The AdBlue ®
tank has dropped tothere ser ve
le ve l.
R Refill AdBlue Emer. oper. in XXX km See Own-
er's Manual
The low AdBlue ®
leve l will result in limited per-
fo rm ance aTer there maining distance dis-
pla yed has been driven. Top up AdBlue ®
as
qu ickly as possible.
R Emergency operation: 20 km/h No start in
XXX km See Operating Instructions
The vehicle speed is limi tedto appr oximately
20 km/h. You will only be able todrive the
ve hicle the distance shown. Subsequentl y,it
will no longer be possible tostart theve hicle.
R Refill AdBlue Engine start not possible
The vehicle can no lon ger be star ted.
Yo u can also ha vetheAd Blue ®
/ll le vel and the
Ad Blue ®
range displa yed (/ page 148).
Opening t Opening t he A
he AdBlue
dBlue ®
®
/ller
/ller cap
cap #
Open the front door on the leT-hand side and
fo ld out /ller 0ap 1. #
Close all vehicle doors topreve nt ammonia
va pours from entering theve hicle interior. #
Turn blue AdBlue ®
/ller cap 2anti-clockwise
and remo veit.
Fu el /ller cap 3forth e fuel remains closed. R
R efuelling wit
efuelling wit h a
h ar
re/ll
e/ll canist
canist er
er Example
#
Unscr ewthe cap on AdBlue ®
re/ll canis ter1. #
Screw disposable hose 2onto the opening of
Ad Blue ®
re/ll canis ter1 until hand-tight. #
Screw disposable hose 2onto the /ller neck
of theve hicle until hand-tight. #
LiT up and tip AdBlue ®
re/ll canis ter1.
The /lling process stops when theAd Blue ®
ta nk is comple tely full.
Ad Blue ®
re/ll canis ter1 can be remo ved
when it has been only partially em ptied.
% Avoid storing AdBlue ®
containers permanently
in theve hicle. #
Unscr ewdisposable hose 2inreve rse order
from AdBlue ®
re/ll canis ter1 and the /ller
neck of theve hicle.
Closing t
Closing t he A
he AdBlue
dBlue ®
®
/ller
/ller cap
cap #
ATer /lling theAd Blue ®
tank, place the
Ad Blue ®
/ller cap on the /ller neck and tighten
it clockwise. #
Turn theAd Blue ®
/ller cap until the lettering is
legible and horizontal.
The /ller neck is only loc ked cor rectly when
th is is the case. #
Open the front leT-hand door /rst, and then
close the /ller 0ap. #
Switch on theve hicle.
The Refill AdBlue See Owner's Manual mes-
sage in the inst rument cluster display must go
out aTer appr oximately 20 seconds. If the
message continues tobe displa yed, you must
add more AdBlue ®
. Driving and pa
rking
149 149

R
Ifth e typical outline of a pedestrian cannot be
distinguished from the backg round.
R If a pedestrian is not de tected as such, e.g.
due tospecial clo thing or other objects.
R In bends with a nar row radius. A
A
ctiv
ctiv ating or deactiv
ating or deactiv ating A
ating Activ
ctive Br
e Br ak
ake Assist
e Assist On-board computer:
4 ò 5
Settings 5
Assistance
5 Active Brake Assist
% It isrecommended that Active Brake Assist is
alw ays leT activated. #
T
To activ
o activ at
ate/deactiv
e/deactiv at
ate:
e: press thea button.
The distance warning function and the autono-
mous braking function of Active Brake Assist
are deactivated or acti vated.
When the functions are deactivated, theæ
symbol appears in the assistance graphic in
th e inst rument cluster displa y.
The next time theve hicle is star ted, Ac tive Brake
Assist is automatically acti vated. F
F unction of A
unction of A dap
daptiv
tive Br
e Br ak
ake Lights
e Lights Ad
aptive brake lights warnfollowing tra1c in an
emer gency braking situation with thefo llowing sig-
nals:
R By 0ashing the brake lamps
R By activating the hazard warning lights
If th eve hicle is braked sharply from speeds abo ve
50 km/h, the brake lamps 0ash rapidl y.This pro-
vides tra1c tr avelling behind you with an even
more noticeable warning.
If th eve hicle is tr avelling at speeds of more than
70 km/h at the beginning of the brake application,
th e hazard warning lights switch on once theve hi-
cle is stationar y.When pulling away again, the haz-
ard warning lights switch o. automatically at
appr oximately 10 km/h.
Yo u can also switch o. the hazard warning lights
using the hazard warning button (/ page 108). Cr
Cr uise contr
uise contr ol and limit
ol and limit er
er F
F
unction of cr
unction of cr uise contr
uise control
ol
Cruise control accelerates and brakes theve hicle
automatically in order tomaintain a pr eviously
stored speed. If
yo u accelerate toove rtake, forex ample, the
stored speed is not dele ted. If youre mo veyour
fo ot from the accelerator pedal aTer overtaking,
cruise cont rol will resume speed regulation back to
th e stored speed.
Yo u operate cruise control using the cruise control
le ve r.Yo u can store any speed abo ve30 km/h.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 152).
Syst
Syst em limits
em limits
Cruise cont rol may be unable tomaintain the
stored speed on uphill gradients. The stored speed
is resumed if the uphill gradient evens out and the
ve hicle's speed does not fall below 30 km/h.
On long and steep downhill gradients, you should
ch ange down toa lo werge ar in good time. Take
particular no teof this when driving a laden vehicle.
By doing so, you will make use of the engine's
braking e.ect. This will take some of the strain o.
th e brake system and pr event the brakes from
ov erheating and wearing tooqu ickl y.
If yo uch ange wheel size on your vehicle, check it
is assigned tothe cor rect wheel size category
(/ page 260). If the category is changed without
re coding the control units in theve hicle, the func-
tioning of cruise control may be impaired.
Do not use cruise control in thefo llowing situa-
tions:
R in tra1c situations where frequent speed
changes are requi red, e.g. in heavy tra1c or on
winding roads
R o.-road or on construction sites
R on slippery or slick roads, as the drive wheels
can lose traction when accelerating and the
ve hicle can then skid
R ifth ere is poor visibility
F
F unction of t unction of t he limit
he limiter
er
The limiter restricts the speed of theve hicle. To
adjust tothe set speed quickl y,the limiter applies
th e brakes automaticall y.
Yo u can limit the speed as follo ws:
R Variable: for a short-term or medium-term
re striction of the highest permissible speed,
e.g. in built-up areas
R Perm anent: for a long-term restriction of the
highest permissible speed, e.g. in winter tyre
mode Driving and parking
157 157