2018 MERCEDES-BENZ CLA automatic transmission

HOLD function
General notes The HOLD function can assist the drive rint he
following situations: R
when pulling away, especially on steep slopes R
when maneuvering on steep slopes R
when waiting in traffic
The vehicl eisk ept stationary without the driver
having to depress the brake pedal.
The braking effect is cancele da nd the HOLD
function deactivated when you depress the
accelerator peda ltop ul la way.
Important safety notes
G WARNING
When leaving the vehicle, it can still roll away
despite being braked by the HOLD function if: R
there is am alfunction in the system or in
the voltag es upply.R
the HOLD function has been deactivated by
pressing the accelerator peda lort he brake
pedal, e.g. by av ehicl eo ccupant.R
the electrical system in the engine com-
partment, the battery or the fuse sh ave
been tampere dw ith.R
the battery is disconnected
There is ar isk of an accident.
If you wis htoe xit the vehicle, alway st urn off
the HOLD function and secure the vehicle
against rolling away.
! When Distance Pilot DISTRONIC or the
HOLD function is activated, the vehicle
brakes automatically in certain situations.
To avoi dd amage to the vehicle, deactivate
Distance Pilot DISTRONIC and the HOLD
function in the following or similar situations: R
when towing the vehicle R
in the car wash
Deactivating the HOLD function ( Y
pag e1 57). Activation conditions You can activate the HOLD function if: R
the vehicl eiss tationary R
the engine is running or if it has been auto-
matically switched off by the ECO start/stop
function R
the driver's door is closed or you rs eat bel ti s
fastened R
the electric parking brake is released R
Distance Pilot DISTRONIC is deactivated R
the transmission is in position [ , ^ or \\
on vehicles with automatic transmission
Activating the HOLD function X
Make sure that the activation conditions are
met. X
Depress the brake pedal. X
Quickly depress the brake peda lf urther
until C appears in the multifunction display.
The HOLD function is activated. You can
release the brake pedal.
i If depressing the brake peda lt he first time
does not activate the HOLD function, wait
briefly and then try again.
Deactivatin gt he HOLD functionThe HOLD function is deactivated automatically
if: R
you accelerate. On vehicles with automatic
transmission: only when the transmission is in
position [ or ^ . R
the transmission is in position ] on vehicles
with automatic transmission. R
you depress the brake peda la gain with ac er-
tain amount of pressure until C disappears
from the multifunction display. R
you activate Distance Pilot DISTRONIC. R
you secure the vehicl eu sing the electric park-
ing brake.Driving systems 157
Driving and parking Z

i After at ime ,t he electri cp ar king brake
secures the vehicl ea nd relieves the service
brake.
Whe nt he HOLD functio ni sa ctivated ,t he trans-
mission is automaticall ys hifted to position ]
if: R
the driver's sea tb el tisn ot fastene da nd the
driver's door is open. R
the engine is switched off, unless it is auto-
maticall ys wi tched off by the ECO start/stop
function.
The electri cp ar king brake secures the vehicle
automaticall yift he HOLD functio ni sa ctivated
when the vehicl eiss tationar ya nd:R
as ys tem malfunctio no ccurs.R
the powe rs uppl yisi nsufficient.
Start-off Assist (except Mercedes-
AM Gv eh icles)
Important safety notes
G WARNING
If yo uu se start-off assist, individual wheels
ma ys tart to spi na nd the vehicl em ay skid. If
ESP ®
is deactivated ,t her eisag reate rd an ger
of skidding and having an accident. Make sure
tha tnop er sons or obstacle sa re in the vicinity
of the vehicle.
Start-off assist enables optimu ma cceleration
from as tandstill .F or this, as ui tabl yh ig h-grip
roa ds ur face is required ,a lo ng with the tire sa nd
vehicl eb ei ng in prope ro pe rating condition.
Do not activate start-off assist on public roads.
Observ et he safety notes on driving safety sys-
tems ( Y
page 61).
Be sure to rea dt he safety notes and information
on ESP ®
( Y
page 64).
Activatin gs tart-off assistX
Deactivate ESP ®
( Y
page 185).X
Turn the steering whee ltot he straight-ahead
position. X
Depres st he brake peda lh ar dw it hy ou rl ef t
foo ta nd kee pitd ep ressed.X
Shift the transmission to position D . X
Use the DYNAMIC SELEC Tb ut ton to select
the S drive progra m( Y
page 128).X
Quickly depress the accelerator peda lf ully.X
Take your foo to ff the brake, bu tk ee pt he
accelerator peda ld ep ressed.
The vehicl ep ulls away at maximu ma cceler-
ation.
i Activate ESP ®
as soo na st he acceleration
proces sh as ended .E SP ®
will otherwise not
be able to stabilize the vehicl eift he vehicle
starts to ski doraw heel starts to spin.
Canceling start-off assist X
Remove your foo tf rom the accelerator pedal.X
Reactivate ESP ®
.
RAC ES TART (Mercedes-AM Gv eh i-
cles)
Important safety notes
i RAC ES TAR Tm us tn ot be used on normal
roads. RAC ES TAR Tm us to nl ybea ctivated
and used on dedicate dr oa dc ircuits, outside
of public roa du se .
i RAC ES TAR Tiso nl ya vailable in
Mercedes ‑ AM Gv ehicles.
G WARNING
If yo uu se RAC ES TART, individual tire sm ay
start to spi na nd the vehicl ec ould skid.
Depending on the selecte dE SP ®
mode, there
is an increased ris kofs kidding and having an
accident. Make sure tha tnop er sons, animals
or obstacle sa re withi nr an ge of the vehicle.
RAC ES TAR Te nables optima la cceleratio nf rom
as tanding start. For this, as ui tabl yh ig h-grip
roa ds ur face is required and the vehicl ea nd tires
must be in goo dw or king order.
i Observ et he safety notes on driving safety
system s( Y
page 61).
Be sure to rea dt he safety notes and informa-
tio nonE SP ®
( Y
page 64).158
Driving systems
Driving an dp arking

Selecting Sport mode The firmer settin goft he suspension tuning in
the Sport drive program ensures even better
contact with the road. Select this drive program
when employing as porty driving style, e.g. on
winding countr yr oads.X
Press DYNAMI CS ELECT button ( Y
page 128)
as many times as necessary until the Sport
drive program is selected.
Parking Assist PARKTRONIC
Important safety notes Parking Assist PARKTRONIC is an electronic
parking aid with ultrasound. It monitor st he area
around your vehicle using six sensors in the
front bumper and six sensors in the rear
bumper. Parking Assist PARKTRONIC visually
and audibly indicates the distance between your
vehicle and an object.
Parking Assist PARKTRONIC is only an aid. It is
not ar eplacement for your attention to your
immediate surroundings. You are always
responsible for safe maneuvering, parking and
exiting ap arking space. Make sure that there
are no persons, animals or object sint he maneu-
vering area while maneuvering and parking in/
leaving parking spaces.
! When parking, pay particular attention to
object sa bove or below the sensors, such as
flower pots or trailer drawbars. Parking Assist
PARKTRONIC does not detect such objects
when they are in the immediate vicinity of the
vehicle. You could damage the vehicle or the
objects.
The sensors may not detect snow and other
object st hat absorb ultrasonic waves.
Ultrasonic sources such as an automatic car
wash, the compressed-air brakes of at ruck or
ap neumatic drill could cause Parking Assist
PARKTRONIC to malfunction.
Parking Assist PARKTRONIC may not function
correctly on uneven terrain.
Parking Assist PARKTRONIC is activated auto-
matically when you: R
switch on the ignition R
shift the transmission to position [ , ^ or
\\ R
release the electric parking brake Parking Assist PARKTRONIC is deactivated at
speeds above 11 mph (18 km/h). It is reactiva-
ted at lower speeds.
Range of the sensors General notes Parking Assist PARKTRONIC does not take into
account obstacles located: R
below the detection range, e.g. people, ani-
mals or objects. R
above the detection range, e.g. overhanging
loads, tail section sorl oading ramps of trucks.
C
Sensors in the front bumper, left-hand side
(example)
The sensors must be free from dirt, ice or slush.
They can otherwise not function correctly. Clean
the sensors regularly ,t aking care not to scratch
or damage them ( Y
page 265).Driving systems 161
Driving and parking Z

X
Let go of the multifunction steering wheel. X
Back up the vehicle ,b eing ready to brake at all
times. When backing up, drive at as peed
belo wa pproximately 6m ph (10 km/h). Oth-
erwise, Parking Pilo tisc anceled immediately.
Parking Pilo tb rakes the vehicle to as tandstill
when the vehicle approaches the rear border
of the parking space.
Maneuvering may be required in tight parking
spaces.
The Parking Pilot Active Select D
Observe Surroundings messag ea ppears in
the multifunction display. X
Shift the transmission to position [ while
the vehicle is stationary.
Parking Pilo ti mmediately steers in the other
direction.
The Parking Pilot Active Accelerate
and Brake Observe Surroundings mes-
sage appears in the multifunction display.
i You wil la chieve the best results by waiting
for the steering procedure to complete before
pulling away. X
Drive forward sa nd be ready to brake at all
times.
Parking Pilo tb rakes the vehicle to as tandstill
when the vehicle approaches the front border
of the parking space.
Maneuvering may be required in tight parking
spaces.
The Parking Pilot Active Select R
Observe Surroundings messag ea ppears in
the multifunction display.
As soon as the parking procedure is complete,
the Parking Pilot Finished message
appears and aw arning tone sounds. The vehicle
is now parked.
The vehicle is kept stationary withou tt he driver
having to depres st he brake pedal. The braking
effect is canceled when you depres st he accel-
erator pedal.
Parking Pilo tnol onger supports you with steer-
ing interventions and brake applications. When
Parking Pilo tisf inished ,y ou must steer and
brake again yourself. Parking Assist
PARKTRONIC is still available.
Parking tips: R
The way you rv ehicle is positioned in the park-
ing space after parking is dependent on vari-
ous factors. These include the positio na nd
shape of the vehicle sp arked in front and behind it and the conditions of the location. It
may be the case that Parking Pilo tg uides you
too far into ap arking space, or not far enough
into it. In some cases, it may also lea dy ou
across or onto the curb. If necessary ,y ou
shoul dc ancel the parking procedure with
Parking Pilot. R
You can also preselect transmission position
[ .T he vehicle redirects and does not drive
as far into the parking space. Should the
transmission change take place too early, the
parking procedure is canceled. As ensible
parking positio nc an no longer be achieved
from this position.
Exitin gap arking spaceIn order for Parking Pilo ttos upport you when
exiting the parking space: R
you need to have parked using Parking Pilot. R
the border of the parking space must be high
enough at the front and the rear. Ac urb stone
is too small ,f or example. R
the border of the parking space must not be
too wide, as the positio noft he vehicle must
not exceed an angle of 45° to the starting
positio nasitism aneuvered into the parking
space. R
am aneuvering distance of at least 3.3 ft
(1.0 m) must be available.
Parking Pilo tc an assist you with exiting ap ark-
ing space only if you have parked the vehicle
parallel to the direction of travel using Parking
Pilot.
i If Parking Assist PARKTRONIC detects
obstacles, Parking Pilo tb rakes automatically
whilst the vehicle is exiting the parking space.
You are responsible for braking in good time. X
Start the engine. X
Release the electric parking brake. X
Switch on the turn signal in the direction you
wil ld rive out of the parking space. X
Shift the transmission to position [ or ^ .
The Start Parking Pilot? Yes: OK No:
8 messag ea ppears in the multifunction
display. X
To cancel the procedure: press the 8
button on the multifunction steering whee lo r
pul la way.
or166
Driving systems
Driving and parking

Display messages
Possible causes/consequences and P Solutions
TirePress .S en ‐
sor(s) Missin g US Ao nl y:
There is no signal from th et ir ep ressur es ensor of on eors everal tires .
The pressur eoft he affecte dt ir ed oes no ta ppear in th em ultifunction
display. X
Hav et he fault yt ir ep ressur es ensor replace dataq ualified special -
ist workshop .
Tir eP ressure Moni‐
tor Inoperative No
Wheel Sensor s US Ao nl y:
The wheels mounte ddon ot hav eas uitable tire pressur es ensor .T he
tire pressur em onitor is deactivated.X
Moun tw heels wit hs uitable tire pressur es ensors.
The tire pressur em onitor is activated automatically after drivin gf or
af ew minutes.
Tir e Press. Monito r
Inoperative US Ao nl y:
The tire pressur em onitor is faulty.X
Visit aq ualified specialist workshop .
Vehicle Display messages
Possible causes/consequences and P Solutions
Depres sB rake to
Start Engine You hav ea ttempte dtos ta rt th ee ng in ew it ht he transmission in posi-
tion N without depressing th eb rak ep edal .X
Depress th eb rak ep edal .
To Deselect P or N,
Depres sB rake and
Start Engine You hav ea ttempte dtos hift th et ra nsmission to position R or D with-
out starting th ee ng ine.X
Start th ee ng ine.X
Depress th eb rak ep edal .
i It is only possibl etos hift th et ra nsmission from position P to th e
desire dp osition if you depress th eb rak ep edal .O nl yt he nc an th e
parking loc kbed eactivated. If you do no td epress th eb rak ep edal ,
th eD IR ECT SELECT lever can still be moved but th ep arking loc k
remain se ng aged.
i At transmission fluid temperatures belo w

Display messages
Possible causes/consequences and P Solutions
Transmission Not in
PR is kofV ehicl e
Rollin gA wa y The driver's door is open or no tf ull yc losed and th et ra nsmission is in
position R , N or D .
Aw arning tone also sounds.
G WARNIN G
The vehicl em ay rol la way.
There is ar is kofana ccident.X
Shift th et ra nsmission to position P .X
Secur et he vehicl ea gainst rollin ga way ( Y
page 141).X
Clos et he driver's door completely.
Servic e Required Do
Not Shift Gears
Visit Dealer You canno tc ha ng et he transmission position due to am alfunction .
Aw arning tone also sounds.
If transmission position D is selected:X
Drive to aq ualified specialist workshop without shifting th et ra ns -
mission from position D .
If transmission position R , N or P is selected:X
Secur et he vehicl ea gainst rollin ga way ( Y
page 141).X
Notify aq ualified specialist workshop or breakdown service.
Onl yS hift to 'P'
whe n Vehicl e is Sta ‐
tionar y The vehicl eism oving .X
Pull ove ra nd stop th ev ehicl es afely as soo nasp ossible, payin g
attention to roa da nd traffic conditions.X
Shift th et ra nsmission to position P .
To Engage Trans‐
miss. Position R
First Depres st he
Brake You hav ea ttempte dtos hift from position D or N to transmission
position R . X
Shift th et ra nsmission to position R while depressing th eb rak e
pedal .
Reversing Not Possi‐
ble Servic e Required The automatic transmission is malfunctioning .Y ou canno tb ac ku p.X
Visit aq ualified specialist workshop .
Transmission Mal ‐
function The automatic transmission is malfunctioning .X
Visit aq ualified specialist workshop .
Transmission Mal ‐
function Sto p The automatic transmission is malfunctioning .X
Pull ove ra nd stop th ev ehicl es afely as soo nasp ossible, payin g
attention to roa da nd traffic conditions.X
Secur et he vehicl ea gainst rollin ga way ( Y
page 141).X
Consult aq ualified specialist workshop .214
Display messages
On-boar dc omputer an dd isplays

Display messages
Possible causes/consequences and P Solutions
Sto pV ehicl eS hift
to PL eave Engine
Runnin g The automatic transmission has overheated. X
Drive on carefully.
The automatic transmission is available again when th ed isplay
message goe so ut .
If th em ultifunction display still shows th ed isplay message :X
Pull ove ra nd stop th ev ehicl es afely as soo nasp ossible, payin g
attention to roa da nd traffic conditions.X
Secur et he vehicl ea gainst rollin ga way ( Y
page 141).X
Wait until th ea utomatic transmission has cooled down and th ed is-
play message has disappeared.
Auxiliary Batter y
Malfunction The auxiliary battery for th ea utomatic transmission is no longer bein g
charged. X
Visit aq ualified specialist workshop .X
Unti lt hen, set th et ra nsmission to position P before you switch off
th ee ng ine. X
Befor el eaving th ev ehicle, apply th ee lectric parking brake.
Trans. Oil Overhea‐
ted Drive on wit h
Car e Mercedes-AMG vehicles: th et ra nsmission oil has overheated.
Manual drive progra m M and th et em porarily active manual drive pro -
gra ma re no longer available. The engin ep owe ro utput is reduced.X
Allow th ev ehicl etoc oo ld own .
4matic Currently
Unavailable 4MATIC has overheated. The vehicl eiso nl yd riven by th ef ront wheels.X
Drive on .
The airflow cools 4MATIC mor eq uickly.
Whe nt he display message goe so ut ,4 MATIC is available again and
th ev ehicl eisd riven by all fou rw heels.
4matic Inoperative 4MATIC is malfunctioning .T he vehicl eiso nl yd riven by th ef ront
wheels. X
Visit aq ualified specialist workshop .

Warning/
indicator
lamp Q Signal type
Possibl ec auses/consequences and P Solutions
%
Q The yellow ABS warning lamp is lit while the engine is running.
ABS (Anti-lock Braking System) is deactivated due to am alfunction. Therefore,
BAS (Brake Assist), Active Brake Assist, ESP ®
(Electronic Stability Program), the
HOLD function and hil ls tart assist, for example, are als od eactivated.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed
above. The wheels coul dt herefore lock if you brake hard ,f or example.
The steerability and braking characteristics may be severely affected. The braking
distance in an emergency braking situation can increase.
If ESP ®
is not operational ,E SP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident. X
Observe the additiona ld isplay messages in the multifunction display.X
Drive on carefully. X
Visi taq ualified specialist worksho pi mmediately.
If the ABS control unit is faulty, there is als oap ossibility that other systems ,s uch
as the navigation system or the automatic transmission, wil ln ot be available.
%
Q The yellow ABS warning lamp is lit while the engine is running.
ABS is temporarily unavailable .T herefore, BAS, Active Brake Assist, ESP ®
,E BD
(electronic brake force distribution), the HOLD function and hil ls tart assist, for
example, are als od eactivated.
Possible causes are: R
Self-diagnosi sisn ot yet complete.R
The on-board voltag em ay be insufficient.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed
above. The front and rear wheels coul dt herefore lock if you brake hard ,f or exam-
ple.
The steerability and braking characteristics may be severely affected. The braking
distance in an emergency braking situation can increase.
If ESP ®
is not operational ,E SP ®
is unable to stabilize the vehicle.
There is ar isk of an accident.X
Carefully drive as uitable distance, making slight steering movements at as peed
above 12 mph (20 km/h).
The functions mentioned above are available again when the warning lamp goes
out.
If the warning lamp is still on: X
Observe the additiona ld isplay messages in the multifunction display.X
Drive on carefully. X
Visi taq ualified specialist worksho pi mmediately.220
Warning and indicator lamps in the instrument cluster
On-board computer and displays