2019 MERCEDES-BENZ GLS SUV refrigerant type

Display in the multimedia syste
m.. 197
Function/note s............................. 196
Switching on/of f........................... 197
Rear window defroster
Problem (malfunction) ................... 135
Switching on/of f........................... 134
Rear window wiper
Replacing the wiper blad e.............. 124
Switching on/of f........................... 123
Rear-view mirror
Anti-glare (manual) ........................ 110
Dipping (automatic) ....................... 112
Reflective safety jacket .................... 334
Refrigerant (air-conditioning sys-
tem)
Important safety notes .................. 388
Refueling
Fuel gaug e....................................... 37
Important safety notes .................. 155
Refueling process .......................... 156
see Fuel
Remote control
Garage door opener ....................... 316
Replacing bulbs
General notes ................................ 120
High-beam headlamp s................... 121
Important safety notes .................. 120
Installing/removing the cover
(front wheel arch) .......................... 121
Low-beam headlamp s.................... 121
Overview of bulb types .................. 120
Turn signals (front) ......................... 122
Reporting safety defects .................... 32
Rescue card ......................................... 32
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 260
Warning lamp ................................. 282
Residual heat (climate control) ........ 135
Restraint system
Display message ............................ 253
Introduction ..................................... 44
Warning lamp ................................. 282
Warning lamp (function) ................... 45
Reversing feature
Panorama sliding sunroo f................ 93
Roller sunblind s............................... 95 Side windows ................................... 89
Sliding sunroof ................................. 93
Tailgate ............................................ 85
Reversing lamps (display mes-
sage) ................................................... 257
Roadside Assistance (breakdown) .... 29
Roller sunblind
Panorama roof with power tilt/
sliding panel ..................................... 94
Rear side window s......................... 306
Roof carrier ........................................ 303
Roof lining and carpets (cleaning
guidelines) ......................................... 333
Roof load (maximum) ........................ 389
Route (navigation)
see Route guidance (navigation)
Route guidance
see also Digital Operator's Man-
ual .................................................. 287
Route guidance (navigation) ............ 234
Route guidance active ...................... 235 S
Safety Children in the vehicle ..................... 59
see Occupant safety
see Operating safety
Safety system
see Driving safety systems
SD card
Inserting ........................................ 293
Inserting/removing ........................ 293
Removing ....................................... 293
SD memory card
see also Digital Operator's Man-
ual .................................................. 287
Selecting ........................................ 236
Search & Send
see also Digital Operator's Man-
ual .................................................. 287
Seat
Correct driver's seat position ........... 97
Seat belts
Adjusting the driver's and front-
passenger seat belt ......................... 48
Adjusting the height ......................... 48
Cleaning ......................................... 333 18
Index

The coolant is a mixture of water and anti-
freeze/corrosion inhibitor. It is responsible for
the following:
R anti-corrosion protection
R antifreeze protection
R raising the boiling point
If the coolant has antifreeze protection down to -35 ‡ (-37 †), the boiling point of the coolant
during operation is approximately 266 ‡
(130 †).
The antifreeze concentrate/corrosion inhibitor
concentration in the engine cooling system
should:
R be at least 50%. This will protect the engine
cooling system against freezing down to
approximately -35 ‡ (-37 †).
R not exceed 55% (antifreeze protection down
to -49 ‡[-45 †]). Otherwise, heat will not be
dissipated as effectively.
Mercedes-Benz recommends an antifreeze/
corrosion inhibitor concentrate in accordance
with MB Specifications for Service Products
310.1.
i When the vehicle is first delivered, it is filled
with a coolant mixture that ensures adequate
antifreeze and anti-corrosion protection.
i The coolant is checked at specified intervals
at a qualified specialist workshop.
Filling capacities Model Capacity
Mercedes
‑AMG
vehicles Approx. 11.9 US qt
(11.3 l) GLS 550 4MATIC
Approx. 12.0 US qt
(11.4 l) All other models
Approx. 10.3 US qt
(9.7 l) Windshield washer system
Important safety notes G
WARNING
Windshield washer concentrate is highly flam- mable. If windshield washer concentrate getsonto hot components of the engine or the exhaust system, it can ignite. There is a risk of
fire and injury.
Make sure that windshield washer concen-
trate is not spilled in the vicinity of the filler
neck.
! Only MB SummerFit and MB WinterFit
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked.
Do not use distilled or de-ionized water. Other-
wise, the level sensor may give a false reading.
When handling washer fluid, observe the impor- tant safety notes on service products
(Y page 384).
At temperatures above freezing:
X Fill the washer fluid reservoir with a mixture of
water and windshield washer fluid, e.g. MB
SummerFit.
Add 1 part MB SummerFit to 100 parts water.
At temperatures below freezing:
X Fill the washer fluid reservoir with a mixture of
water and washer fluid, e.g. MB WinterFit.
For the correct mixing ratio refer to the infor- mation on the antifreeze reservoir.
i Add windshield washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year round. Climate control syste
m refrigerant
Important safety notes The climate control system of your vehicle is fil-
led with refrigerant R‑134a.
The instruction label regarding the refrigerant
type used can be found on the radiator cross
member.
! Only the refrigerant R‑134a and the PAG oil
approved by Mercedes-Benz may be used.
The approved PAG oil may not be mixed with
any other PAG oil that is not approved for
R-134a refrigerant. Otherwise, the climate
control system may be damaged.
Service work, such as refilling with refrigerant or
replacing component parts, may only be carried out by a qualified specialist workshop. All appli- 388
Service products and filling capacitiesTechni
cal data

cable regulations, as well as SAE standard J639,
must be adhered to.
Always have work on the climate control system
carried out at a qualified specialist workshop.
Refrigerant instruction label Example: refrigerant instruction label
0043 Warning symbol
0044 Refrigerant filling capacity
0087 Applicable standards
0085 PAG oil part number
0083 Type of refrigerant
Warning symbol 0043advises you about:
R Possible dangers
R Having service work carried out at a qualified
specialist workshop
Filling capacities Refrigerant Capacity
All models
45.9 ± 0.4 oz
(1300 ± 10 g) PAG oil Capacity
All models
3.9 ± 0.4 oz
(110 ± 10 g) Vehicle data
General notes
Please note that for the specified vehicle data: R The heights specified may vary as a result of:
- Tires
- Load
- Condition of the suspension
- Optional equipment
R Optional equipment reduces the maximum
payload
Observe the information relating to level con-
trol:
R AIRMATIC Package (Y page 187)
R Offroad Engineering package (Y page 217) Dimensions and weights
Missing values were not available at time of
going to print.
Model
0043 0043
Height when
opened 0044
0044
Max.
headroom Mercedes-
AMG GLS 63
4MATIC Vehicle data
389Technical data Z