2019 MERCEDES-BENZ GLC lock

Ryou are driving on sand or gravel.
Ryou adopt a very sporty driving style (corner-ing at high speeds or driving with high rates ofacceleration).
Ryou are towing a very heavy or large trailer.
Ryou are driving with a heavy load (in the vehi-cle or on the roof).
Restarting the tire pressure loss warn-
ing system
Restart the tire pressure loss warning system ifyou have:
Rchanged the tire pressure
Rchanged the wheels or tires
Rmounted new wheels or tires
XBefore restarting, make sure that the tirepressures are set properly on all four tires forthe respective operating conditions.
The recommended tire pressure can be foundon the Tire and Loading Information placardon the B-pillar. Additionally, a tire pressuretable is attached to the fuel filler flap. The tirepressure loss warning system can only givereliable warnings if you have set the correcttire pressure. If an incorrect tire pressure isset, these incorrect values will be monitored.
XAlso observe the notes in the section on tirepressures (Ypage 333).
XMake sure that the SmartKey is in positionHin the ignition lock (Ypage 131).
XPress

too low. The tire pressure monitor is not mal-functioning.
Rif the warning lamp flashes for around aminute and then remains lit constantly, thetire pressure monitor is malfunctioning.
In addition to the warning lamp, a messageappears in the multifunction display. Observethe information on display messages(Ypage 250).
It may take up to ten minutes for a malfunctionof the tire pressure monitor to be indicated. Amalfunction will be indicated by the tire pres-sure warning lamp flashing for approximatelyone minute and then remaining lit. When themalfunction has been rectified, the tire pressurewarning lamp goes out after a few minutes ofdriving.
The tire pressure values indicated by the on-board computer may differ from those meas-ured at a gas station with a pressure gauge. Thetire pressures shown by the on-board computerrefer to those measured at sea level. At highaltitudes, the tire pressure values indicated by apressure gauge are higher than those shown bythe on-board computer. In this case, do notreduce the tire pressures.
The operation of the tire pressure monitor canbe affected by interference from radio transmit-ting equipment (e.g. radio headphones, two-wayradios) that may be being operated in or near thevehicle.
Checking the tire pressure electroni-
cally
XMake sure that the SmartKey is in positionH(Ypage 131) in the ignition lock.
XPress

the Tire and Loading Information placard onthe B-pillar on the driver's side.
You can find more tire pressures for variousoperating conditions in the tire pressure tableinside the filler flap.
Observe the information on tire pressurewhen doing so (Ypage 333).
XMake sure that the tire pressure is correct onall four wheels.
XMake sure that the SmartKey is in positionHin the ignition lock (Ypage 131).
XPress

the tires are installed corresponding to thedirection of rotation.
An arrow on the sidewall of the tire indicates itscorrect direction of rotation.
Storing wheels
Store wheels that are not being used in a cool,dry and preferably dark place. Protect the tiresfrom oil, grease, gasoline and diesel.
Mounting a wheel
Preparing the vehicle
XStop the vehicle on solid, non-slippery andlevel ground.
XApply the electric parking brake manually.
XBring the front wheels into the straight-aheadposition.
XShift the transmission to position].
XMake sure that the vehicle level is set to "Nor-mal" on vehicles with AIR BODY CONTROL(Ypage 173).
XSwitch off the engine.
XVehicles without KEYLESS-GO:remove theSmartKey from the ignition lock.
XVehicles with KEYLESS-GO start functionor KEYLESS-GO:open the driver's door.The vehicle electronics are now in position

must be positioned vertically, directly under
the jacking point of the vehicle.
!Only position the jack at the appropriatejacking point of the vehicle. Otherwise, youcould damage the vehicle.
Observe the following when raising the vehi-cle:
RTo raise the vehicle, only use the vehicle-spe-cific jack that has been tested and approvedby Mercedes-Benz. If used incorrectly, thejack could tip over with the vehicle raised.
RThe jack is designed only to raise and hold thevehicle for a short time while a wheel is beingchanged. It must not be used for performingmaintenance work under the vehicle.
RAvoid changing the wheel on uphill and down-hill slopes.
RBefore raising the vehicle, secure it from roll-ing away by applying the parking brake andinserting wheel chocks. Do not disengage theparking brake while the vehicle is raised.
RThe jack must be placed on a firm, flat andnon-slip surface. On a loose surface, a large,flat, load-bearing underlay must be used. On aslippery surface, a non-slip underlay must beused, e.g. rubber mats.
RDo not use wooden blocks or similar objectsas a jack underlay. Otherwise, the jack will notbe able to achieve its load-bearing capacitydue to the restricted height.
RMake sure that the distance between theunderside of the tires and the ground does notexceed 1.2 in (3 cm).
RDo not place your hands or feet under theraised vehicle.
RDo not lie under the vehicle.
RDo not start the engine when the vehicle israised.
RNever open or close a door or the tailgatewhen the vehicle is raised.
RMake sure that no persons are present in thevehicle when the vehicle is raised.
XUsing lug wrenchC, loosen the bolts on thewheel you wish to change by about one fullturn. Do not unscrew the bolts completely.
The jacking points are located just behind thefront wheel housings and just in front of the rearwheel housings (arrows).
XTake the ratchet wrench out of the tire-chang-ing tool kit and place it on the hexagon nut ofthe jack so that the lettersAUFare visible.
XPosition jack

Comply with the important safety notes for ser-vice products when handling coolant(Ypage 358).
The coolant is a mixture of water and anti-freeze/corrosion inhibitor. It performs the fol-lowing tasks:
Ranti-corrosion protection
Rantifreeze protection
Rraising the boiling point
If the coolant has antifreeze protection down to-35 ‡ (-37 †), the boiling point of the coolantduring operation is approximately 266 ‡(130 †).
The antifreeze concentrate/corrosion inhibitorconcentration in the engine cooling systemshould:
Rbe at least 50%. This will protect the enginecooling system against freezing down toapproximately -35 ‡ (-37 †).
Rnot exceed 55% (antifreeze protection downto -49‡[-45 †]). Otherwise, heat will not bedissipated as effectively
Mercedes-Benz recommends an antifreeze/corrosion inhibitor concentrate in accordancewith MB Specifications for Service Products310.1.
iWhen the vehicle is first delivered, it is filledwith a coolant mixture that ensures adequateantifreeze and anti-corrosion protection.
iThe coolant is checked with every mainte-nance interval at a qualified specialist work-shop.
Filling capacities
ModelCapacity
Mercedes-AMGGLC 43 4MATICCoupe
12.2 US qt (11.5l)
Mercedes-AMGGLC 63 4MATIC+Coupe
Mercedes-AMGGLC 63 S 4MATIC+Coupe
11.7 US qt (11.1l)
All other models12.7 US qt (12.0l)
Windshield washer system
Important safety notes
GWARNING
Windshield washer concentrate is highly flam-
mable. If windshield washer concentrate gets
onto 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 use washer fluid which is suitable forlamp lenses, e.g. MB SummerFit or MB Win-terFit. Unsuitable washer fluid may damagethe lamp lenses of the headlamps.
!Only MB SummerFit and MB WinterFitwasher fluid should be mixed together. Thespray nozzles may otherwise becomeblocked.
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(Ypage 358).
At temperatures above freezing:
XFill the washer fluid reservoir with a mixture ofwater and windshield washer fluid, e.g. MBSummerFit.
Add 1 part MB SummerFit to 100 parts water.
At temperatures below freezing:
XFill the washer fluid reservoir with a mixture ofwater and washer fluid, e.g. MB WinterFit.
For the correct mixing ratio refer to the infor-mation on the antifreeze reservoir.
iAdd windshield washer fluid, e.g. MB Sum-merFit or MB WinterFit, to the washer fluid allyear round.
Climate control system refrigerant
Important safety notes
The climate control system of your vehicle is fil-led with refrigerant R‑134a.
362Service products and filling capacities
Technical data