
Emergency key
Unlocking the driver's door .............. 88
Emergency key element
Function/notes ................................ 81
Inserting .......................................... 82
Locking vehicle ................................ 88
Removing ........................................ .82
Emergency release
Driver's door .................................... 88
Emergency spare wheel
General notes ................................ 348
Important safety notes .................. 348
Removing ...................................... .348
Emergency unlocking
Vehicle ............................................. 88
Engine
Display message ............................ 249
ECO start/stop function ................ 148
Engine number ............................... 352
Jump-starting ................................. 325
Running irregularl y......................... 150
Starting (important safety notes )... 145
Starting problems .......................... 150
Starting the engine with the key .... 146
Starting with the Start/Stop but-
ton ................................................. 146
Stopping ........................................ 166
Tow-starting (vehicle) ..................... 331
Warning lamp (engine diagnos-
tics) ............................................... 272
Engine electronics
Notes ............................................. 350
Problem (fault) ............................... 150
Engine oil
Additives ........................................ 356
Checking the oil level ..................... 304
Checking the oil level using the
dipstick .......................................... 304
Display message ............................ 250
Filling capacity ............................... 356
Notes about oil grade s................... 355
Notes on oil level/consumption .... 304
Temperature (on-board computer, Mercedes-AMG vehicles) ............... 231
Topping up ..................................... 305
Engine oil additives
see Additives (engine oil) Entering an address
See also Digital Owner's Manua l... 277
Environmental protection
Returning an end-of-life vehicle ....... 26
ESC (Electronic Stability Control)
see ESP ®
(Electronic Stability Program)
ESP ®
(Electronic Stability Pro-
gram)
Activating/deactivating (on-
board computer) ............................ 266
AMG menu (on-board computer) ... 232
Characteristics ................................. 72
Deactivating/activating (button
in Mercedes-AMG vehicles) ............. 73
Deactivating/activating (except
Mercedes‑ AMG vehicles) ................. 73
Deactivating/activating (on-
board computer, except
Mercedes-AMG vehicles) ............... 227
Display message ............................ 235
Function/note s................................ 72
General notes .................................. 72
Important safety guidelines ............. 72
Trailer stabilisation .......................... 75
Warning lamp ................................. 269
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 72
Exhaust
see Exhaust pipe
Exhaust pipe
Cleaning ......................................... 312
Exterior lighting
Cleaning ......................................... 311
see Lights
Exterior mirrors
Adjusting ....................................... 112
Anti-dazzle mode (automatic) ........ 113
Folding in when locking (on-boardcomputer) ...................................... 231
Folding in/out (automatically )....... 113
Folding in/out (electrically) ........... 113
Out of position (troubleshooting) ... 113
Parking position ............................. 114
Resetting ....................................... 113
Storing settings (memory func-
tion) ............................................... 115 Index
11 

Closing the bonnet
X
Raise the bonnet slightly and, at the same
time, remove support strut ?from yellow
retaining clip =.
X Swing support strut ?down and press it into
bracket Auntil it engages.
X Lower the bonnet and let it fall from a height
of approximately 20 cm.
X Check that the bonnet has engaged properly.
If the bonnet can be raised slightly, it is not
properly engaged. Do not press the bonnet
closed. Open the bonnet again and close it
with a little more force. Engine oil
General notes Depending on your driving style, the vehicle
consumes up to 0.8 litres of oil per 1,000 km.
The oil consumption may be higher than this
when the vehicle is new or if you frequently drive
at high engine speeds.
Depending on the engine, the oil dipstick may be installed at different locations.
To check the oil level:
R park the vehicle on a level surface
R the engine should be switched off for approx-
imately five minutes if the engine is at normal
operating temperature
R if the engine is not at normal operating tem-
perature, e.g. if the engine was only started
briefly, wait approximately 30 minute sbefore
carrying out the measurement
Checking the oil level using the oil dip-
stick G
WARNING
Certain components in the engine compart-
ment could be very hot, e.g. the engine, the
radiator and parts of the exhaust system.
There is a risk of injury when accessing the
engine compartment.
As far as possible, allow the engine to cool
down and only touch the components descri- bed in the following. Example: vehicles with a petrol engine
Example: vehicles with a diesel engine
(except the GLA 180 d model)
Example: GLA 180 d model
X All models except GLA 180 d: pull out oil
dipstick :.
X The GLA 180 d model: release the oil filler
cap and pull it out together with integrated oil dipstick :.
X Wipe off oil dipstick :.
X Slowly slide oil dipstick :into the guide tube
to the stop, and take it out again.
If the level is between MIN mark =and MAX
mark ;, the oil level is correct.
X If the oil level has dropped to MIN mark =or
below, top up with 1.0 lof engine oil. 304
Engine compartmentMaintenance and care 

Topping up engine oil
G
WARNING
Certain components in the engine compart-
ment could be very hot, e.g. the engine, the
radiator and parts of the exhaust system.
There is a risk of injury when accessing the
engine compartment.
As far as possible, allow the engine to cool
down and only touch the components descri- bed in the following. G
WARNING
If engine oil comes into contact with hot com- ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Make sure that engine oil does not spill out
over the filler neck. Allow the engine to cool
down and thoroughly clean the components
that have come into contact with engine oil
before you start the engine. H
Environmental note
When topping up the oil, take care not to spill
any. If oil enters the soil or waterways, it is
harmful to the environment.
! Use only engine oils and oil filters that are
approved for vehicles with a service system. A
list of the engine oils and oil filters that have
been tested and approved in accordance with Mercedes-Benz Specifications for Service
Products is available at any Mercedes-Benz
Service Centre.
The following cause engine failure or damage
to the exhaust system:
R Use of engine oils and oil filters that have
not been expressly approved for the service system
R Replacement of engine oil and oil filter after
the replacement interval specified by the
service system has expired
R Use of engine oil additives
! Do not add too much oil. Topping up with too
much engine oil can result in damage to the
engine or to the catalytic converter. Have
excess engine oil siphoned off. Example: engine oil filler cap
X Turn cap :anti-clockwise and remove it.
X Top up the engine oil.
If the oil level is at or below the MIN mark on
the oil dipstick, top up with 1.0 lof engine oil.
X Replace cap :on the filler neck and turn
clockwise.
Make sure that the cap locks securely into
place.
X Check the oil level again with the oil dipstick
(Y page 304).
Further information on engine oil (Y page 355). Checking and adding other service
products
Checking the coolant level G
WARNING
The cooling system is pressurised, particu-
larly when the engine is warm. If you open the cap, you could be scalded if hot coolant
sprays out. There is a risk of injury.
Let the engine cool down before you open the
cap. Wear gloves and eye protection. Open
the cap slowly to release the pressure.
! The coolant level must only be checked and
corrected when the engine has cooled down
(coolant temperature under 40 †). Checking
the coolant level when the coolant tempera-
ture is over 40 † can lead to damage to the
engine or engine cooling system. Engine compartment
305Maintenance and care Z