2019 MERCEDES-BENZ CLA keyless

Home address
see also Digital Operator's Man-
ual .................................................. 231
Hood
Closing ........................................... 261
Display message ............................ 217
Important safety notes .................. 260
Opening .........................................260
Horn...................................................... 32
Hydroplaning..................................... 149
I
Ignition lock
see Key positions
Immobilizer.......................................... 68
Indicator lamp
Replacing bulbs (rear) .................... 107
Indicator lamps
see Warning and indicator lamps
Indicators
see Turn signals
Instrument cluster
Overview .......................................... 33
Settings ......................................... 188
Warning and indicator lamps ........... 33
Instrument cluster lighting.............. 178
Interior lighting
Control ...........................................105
Overview ........................................ 104
Reading lamp ................................. 104
iPod®
see also Digital Operator's Man-
ual ..................................................231
J
Jack
Storage location ............................ 274
Using ............................................. 312
Jump starting (engine)......................282
K
Key positions
Start/Stop button .......................... 123
KEYLESS-GO
Convenience closing feature ............ 84
Deactivation ..................................... 71
Locking ............................................ 71
Unlocking ......................................... 71
Kickdown
Driving tips ....................................135
Manual gearshifting ....................... 139
Knee bag.............................................. 46
L
Lamps
see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 188
Display message ............................ 210
Function/information.................... 176
Lane Tracking package..................... 174
Lap time (RACETIMER)...................... 191
LATCH-type (ISOFIX) child seat
anchors................................................ 57
License plate lamp (display mes-
sage)................................................... 205
Light sensor (display message)....... 206
Lights
Adaptive Highbeam Assist ............. 103
Automatic headlamp mode ............ 101
Fogged up headlamps.................... 104
Hazard warning lamps ................... 103
High beam flasher .......................... 102
High-beam headlamps................... 102
Light switch ................................... 101
Low-beam headlamps.................... 102
Parking lamps ................................ 102
Rear fog lamp ................................ 102
Setting exterior lighting ................. 101
Standing lamps .............................. 102
Switching the daytime running
lamps on/off (on-board com-
puter) ............................................. 189
Turn signals ................................... 102
Loading guidelines............................ 239
Locking
see Central locking
Locking (doors)
Automatic ........................................ 77
Emergency locking ........................... 77
From inside (central locking but-
ton) .................................................. 76
12Index

Folding the backrest (rear com-
partment) forwards/back .............. 242
Important safety notes .................... 91
Seat heating problem ...................... 96
Storing settings (memory func-
tion) ............................................... 100
Switching seat heating on/off ......... 95
Section
Trunk ............................................... 78
Securing cargo.................................. 243
Selector lever
Cleaning ......................................... 271
Sensors (cleaning instructions)....... 269
Service center
see Qualified specialist workshop
Service Center
see Qualified specialist workshop
Service menu (on-board com-
puter).................................................. 188
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 322
Coolant (engine) ............................ 323
Engine oil ....................................... 322
Fuel ................................................ 319
Important safety notes .................. 319
Refrigerant (air-conditioning sys-
tem) ............................................... 324
Washer fluid ................................... 323
Setting the air distribution............... 117
Setting the airflow............................ 118
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 231
Setting the language
see also Digital Operator's Man-
ual .................................................. 231
Setting the time
see also Digital Operator's Man-
ual .................................................. 231
Settings
Factory (on-board computer) ......... 190
On-board computer ....................... 188
SETUP (on-board computer,
Mercedes-AMG vehicles).................. 191
Side impact air bag............................. 47
Side marker lamp (display mes-
sage)................................................... 206
Side windows
Cleaning ......................................... 268
Convenience closing feature ............ 84
Convenience opening feature .......... 83
Important safety information ........... 82
Opening/closing .............................. 83
Problem (malfunction) ..................... 85
Resetting ......................................... 85
Reversing feature ............................. 83
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 231
Sliding sunroof
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery ....................... 73
Changing the programming ............. 72
Checking the battery ....................... 73
Convenience closing feature ............ 84
Convenience opening feature .......... 83
Display message............................ 218
Door central locking/unlocking ....... 70
Important safety notes .................... 70
KEYLESS-GO start function .............. 71
Loss ................................................. 74
Mechanical key ................................ 72
Positions (ignition lock) ................. 123
Problem (malfunction) ..................... 74
Starting the engine ........................ 125
SmartKey positions (ignition lock).. 123
Smartphone
Starting the engine ........................ 125
SMS
see also Digital Operator's Man-
ual .................................................. 231
Snow chains...................................... 293
Sockets
Center console .............................. 247
General notes ................................ 247
Rear compartment ......................... 248
Trunk ............................................. 248
Sound
Switching on/off........................... 232
Special seat belt retractor.................. 55
Index17

Panic alarm
XTo activate:press and hold the
3buttonCfor approx. one second.A visual and audible alarm is triggered if thealarm system is armed.
XTo deactivate:press3buttonCagain.
or
XInsert the SmartKey into the ignition lock.
or, in vehicles with KEYLESS-GO start-functionor KEYLESS‑GO
XPress the Start/Stop button.
The SmartKey must be in the vehicle.
Occupant safety
Introduction to the restraint system
The restraint system can reduce the risk of vehi-cle occupants coming into contact with parts ofthe vehicle's interior in the event of an accident.The restraint system can also reduce the forcesto which vehicle occupants are subjected duringan accident.
The restraint system comprises:
RSeat belt system
RAir bags
RChild restraint system
RChild seat securing systems
The components of the restraint system work inconjunction with each other. They can onlydeploy their protective function if, at all times, allvehicle occupants:
Rhave fastened their seat belts correctly(Ypage 43)
Rhave the seat and head restraint adjustedproperly (Ypage 91)
As the driver, you also have to make sure thatthe steering wheel is adjusted correctly.Observe the information relating to the correctdriver's seat position (Ypage 91).
You also have to make sure that an air bag caninflate properly if deployed (Ypage 45).
An air bag supplements a correctly worn seatbelt. As an additional safety device, the air bagincreases the level of protection for vehicleoccupants in the event of an accident. For exam-ple, if, in the event of an accident, the protectionoffered by the seat belt is sufficient, the air bagsare not deployed. When an accident occurs, onlythe air bags that increase protection in that par-ticular accident situation are deployed. How-ever, seat belts and air bags generally do notprotect against objects penetrating the vehiclefrom the outside.
Information on restraint system operation canbe found under "Triggering of the EmergencyTensioning Devices and air bags" (Ypage 52).
See "Children in the vehicle" for information onchildren traveling with you in the vehicle as wellas on child restraint systems (Ypage 54).
Important safety notes
GWARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in an
accident or trigger unexpectedly, for example.
This poses an increased risk of injury or even
fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
components or their software.
If it is necessary to modify components of therestraint system to accommodate a person withdisabilities, contact an authorized Mercedes-Benz Center for details. USA only: for furtherinformation contact our Customer AssistanceCenter at 1-800 FOR-MERCEDES(1‑800‑367‑6372).
Mercedes-Benz recommends that you only usedriving aids which have been approved specifi-cally for your vehicle by Mercedes-Benz.
40Occupant safety
Safety

You should therefore adapt your driving style
to the different handling characteristics. Have
the brake system checked at a qualified spe-
cialist workshop.
Please observe the information on warning andindicator lamps (Ypage 222)
(Ypage 222) as well as on display messages(Ypage 196).
ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety andoffers increased braking comfort. In addition tothe braking function, ADAPTIVE BRAKE also hasthe HOLD function (Ypage 158) and hill startassist (Ypage 126).
STEER CONTROL
General information
STEER CONTROL helps you by transmitting anoticeable steering force to the steering wheelin the direction required for vehicle stabilization.
This steering assistance is provided in particularif:
Rboth right wheels or both left wheels are on awet or slippery road surface when you brake
Rthe vehicle begins to skid
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 61).
No steering assistance is provided from STEERCONTROL, if:
RESP®is malfunctioning
Rthe steering is malfunctioning
If ESP®is malfunctioning, you will be assistedfurther by the electrical power steering.
Protection against theft
Immobilizer
The immobilizer prevents your vehicle frombeing started without the correct SmartKey.
XTo activate with the SmartKey:remove theSmartKey from the ignition lock.
XTo activate with KEYLESS-GO start-func-tion or KEYLESS-GO:switch the ignition offand open the driver's door.
XTo deactivate:switch on the ignition.
When leaving the vehicle, always take theSmartKey with you and lock the vehicle. Anyonecan start the engine if a valid SmartKey has beenleft inside the vehicle.
iThe immobilizer is always deactivated whenyou start the engine.
In the event that the engine cannot be started(yet the vehicle's battery is charged), the sys-tem is not operational. Contact an authorizedMercedes-Benz Center or call1-800-FOR-MERCedes (in the USA) or1-800-387-0100(in Canada).
ATA (anti-theft alarm system)
XTo arm:lock the vehicle with the SmartKey orKEYLESS-GO.Indicator lampCflashes. The alarm systemis armed after approximately 15 seconds.
XTo disarm:unlock the vehicle with the Smart-Key or KEYLESS-GO.
or
XInsert the SmartKey into the ignition lock.
A visual and audible alarm is triggered if thealarm system is armed and you open:
Ra door
Rthe vehicle with the mechanical key
Rthe trunk lid
Rthe hood
68Protection against theft
Safety

XTo stop the alarm with the SmartKey:press the6or7button on the Smart-Key.The alarm is stopped.
or
XVehicles with KEYLESS-GO start-functionor KEYLESS-GO:remove the Start/Stop but-ton from the ignition lock (Ypage 123).
XInsert the SmartKey into the ignition lock.The alarm is stopped.
XTo stop the alarm using KEYLESS-GO:grasp the outside door handle. The SmartKeymust be outside the vehicle.The alarm is stopped.
or
XPress the Start/Stop button on the dash-board. The SmartKey must be inside the vehi-cle.The alarm is stopped.
The alarm is not stopped, even if you close theopen door that triggered it, for example.
iIf the alarm stays on for more than30 seconds, the Mercedes me connect emer-gency call system automatically sends a mes-sage to the Customer Center. This is doneeither by text message or data connection.
The emergency call system sends the mes-sage or data provided that:
Ryou have subscribed to the Mercedes meconnect service
Rthe Mercedes me connect service has beenactivated properly
Rthe necessary mobile phone network isavailable
Protection against theft69
Safety
Z

SmartKey
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Roperate the vehicle's equipment
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake
Rshift the automatic transmission out of park
position]
Rstart the engine
There is a risk of an accident and injury.
Never leave children or animals unattended in
the vehicle.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. This
also applies for the Digital Vehicle Key if the
"Digital Vehicle Key" function is activated via
Mercedes me connect.
GWARNING
If you attach heavy or large objects to the
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This could
cause the engine to be switched off. There is a
risk of an accident.
Do not attach any heavy or large objects to the
SmartKey. Remove any bulky key rings before
inserting the SmartKey into the ignition lock.
!Keep the SmartKey away from strong mag-netic fields. Otherwise, the remote controlfunction could be affected.
Strong magnetic fields can occur in the vicin-ity of powerful electrical installations.
Do not keep the SmartKey:
Rwith electronic devices, e.g. a mobile phoneor another SmartKey
Rwith metallic objects, e.g. coins or metal foil
Rinside metallic objects, e.g. a metal case
Vehicles with KEYLESS-GO start function:donot keep the SmartKey in the trunk. Otherwise,
the SmartKey may not be detected, e.g. whenstarting the engine using the Start/Stop button.
SmartKey functions
C7To lock the vehicle
DTTo open the trunk lid

KEYLESS-GO
General notes
Bear in mind that the engine can be started byany of the vehicle occupants if there is a Smart-Key in the vehicle.
Locking and unlocking
You can start, lock or unlock the vehicle usingKEYLESS-GO. To do this, you only need carry theSmartKey with you. You can combine the func-tions of KEYLESS-GO with those of a conven-tional SmartKey. Unlock the vehicle by usingKEYLESS-GO, for instance, and lock it using the7button on the SmartKey.
The driver's door and the door at which the han-dle is used, must both be closed. The SmartKeymust be outside the vehicle. When locking orunlocking with KEYLESS-GO, the distancebetween the SmartKey and the correspondingdoor handle must not be greater than three feet(one meter).
A check which periodically establishes a radioconnection between the vehicle and the Smart-Key determines whether a valid SmartKey is inthe vehicle. This occurs, for example:
Rwhen starting the engine
Rwhile driving
Rwhen using HANDS-FREE ACCESS
Rwhen the external door handles are touched
Rduring convenience closing
XTo unlock the vehicle:touch the inner sur-face of the door handle.
XTo lock the vehicle:touch sensor surfaceCorD.
Make sure that you do not touch the innersurface of the door handle.
XConvenience closing feature:touchrecessed sensor surfaceDfor an extendedperiod.
Further information on the convenience clos-ing feature (Ypage 84).
XTo unlock the trunk lid:pull trunk lid han-dleC.
Deactivating and activating
If you do not intend to use the vehicle for a lon-ger period of time, you can deactivate KEYLESS-GO. The SmartKey will then use very little power,thereby conserving battery power. For the pur-poses of activation/deactivation, the vehiclemust not be nearby.
XTo deactivate:press the7button on theSmartKey twice in rapid succession.The indicator light on the SmartKey flashestwice briefly then one long flash, then KEY-LESS-GO is deactivated (Ypage 73).
XTo activate:press any button on the Smart-Key.
or
XInsert the SmartKey into the ignition lock.KEYLESS-GO and all of its associated featuresare available again.
KEYLESS-GO start function
General notes
Bear in mind that the engine can be started byany of the vehicle occupants if there is a Smart-Key in the vehicle.
SmartKey71
Opening and closing
Z

Changing the settings of the locking
system
You can change the settings of the locking sys-tem. This means that only the driver's door andthe fuel filler flap are unlocked when the vehicleis unlocked. This is useful if you frequently travelon your own.
XTo change the setting:press and hold the6and7buttons simultaneously forapproximately six seconds until the batteryindicator lamp flashes twice (Ypage 73).
If the setting of the locking system is changedwithin the signal range of the vehicle, pressingthe7or6button:
Rlocks or
Runlocks the vehicle
The SmartKey now functions as follows:
XTo unlock:press the6button once.
XTo unlock centrally:press the6buttontwice.
XTo lock centrally:press the7button.
The KEYLESS-GO function is changed as fol-lows:
XTo unlock the driver's door:touch the innersurface of the door handle on the driver'sdoor.
XTo unlock centrally:touch the inner surfaceof the door handle on the front-passengerdoor or the rear door.
XTo lock centrally:touch the outer sensorsurface on one of the door handles.
XTo restore the factory settings:press andhold the6and7buttons simultane-ously for approximately six seconds until thebattery check lamp flashes twice(Ypage 73).
Mechanical key
General notes
If the vehicle can no longer be locked orunlocked with the SmartKey or KEYLESS-GO,use the mechanical key.
If you use the mechanical key to unlock andopen the driver's door or the trunk lid, the anti-theft alarm system will be triggered (Ypage 68).
There are several ways to turn off the alarm:
XTo deactivate the alarm with the key:pressthe6or7button on the key.
or
XInsert the SmartKey into the ignition lock.
or
XTo deactivate the alarm with KEYLESS-GO:press the Start/Stop button in the ignitionlock. The SmartKey must be in the vehicle.
or
XLock or unlock the vehicle using KEYLESS-GO. The SmartKey must be outside the vehi-cle.
If you unlock the vehicle using the mechanicalkey, the fuel filler flap will not be unlocked auto-matically.
XTo unlock the fuel filler flap:insert theSmartKey into the ignition lock.
Removing the mechanical key
XPush release catchCin the direction of thearrow and at the same time remove mechan-ical keyDfrom the SmartKey.
For further information about:
RUnlocking the driver's door (Ypage 77)
RUnlocking the trunk (Ypage 82)
RLocking the vehicle (Ypage 77)
Inserting the mechanical key
XPush mechanical keyDcompletely into theSmartKey until it engages and releasecatchCis back in its basic position.
72SmartKey
Opening and closing