Get Wheels and tires -> Emergency spare wheel Guide for Mercedes GLC Class SUV First Generation (2015-2021)

488 Wheels and tires

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Vehicles with a tire pressure monitoring

system: Restart the tire pressure monitoring

system (/ page 465).

Exception: the new wheel is an emergency

spare wheel.

Place the ratchet onto the hexagon nut of the

&

WARNING Risk of injury through incor‐

jack so that the letters "AB" are visible.

rect tightening torque

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To lower the vehicle: turn the ratchet of the

jack counter-clockwise.

The wheels could come loose if the wheel

bolts or wheel nuts are not tightened to the

prescribed tightening torque.

Make sure to observe the following further rela‐

ted subject:

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Make sure the wheel bolts or wheel

nuts are tightened to the prescribed

tightening torque.

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Notes on tire pressure (/ page 460)

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If you are not sure, do not move the

Emergency spare wheel

Notes on the emergency spare wheel

vehicle. Consult a qualified specialist

workshop and have the tightening tor‐

que checked immediately.

&

WARNING Risk of accident caused by

incorrect wheel and tire dimensions

#

Check the tire pressure of the newly moun‐

ted wheel and adjust accordingly.

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Tighten the wheel bolts evenly in a diagonal

The wheel or tire size and the tire type of the

emergency spare wheel or spare wheel and

the wheel to be replaced may differ. Mount‐

ing an emergency spare wheel/spare wheel

may severely impair the driving characteris‐

tics.

pattern in the order indicated 1 to 5 with

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Vehicles with tire pressure loss warning

system: Restart the tire pressure loss warn‐

ing system (/ page 466).

Exception: the new wheel is an emergency

spare wheel.

a maximum of 59 lb-ft (80 Nm).

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Tighten the wheel bolts evenly in a diagonal

pattern in the order indicated 1 to 5 to

the specified tightening torque of 111 lb-ft

(150 Nm).

To prevent hazardous situations:

Wheels and tires 489

Removing the emergency spare wheel

Replace the emergency spare wheel after six

years at the latest, regardless of wear.

#

Adapt your driving style accordingly and

drive carefully.

Never mount more than one emergency

spare wheel or spare wheel that differs

in size.

Only use an emergency spare wheel or

spare wheel of a different size briefly.

Do not switch off ESP^®.

>Have the emergency spare wheel or

spare wheel of a different size replaced

at the nearest qualified specialist work‐

shop. The new wheel must have the

correct dimensions.

The emergency spare wheel is fastened in the

cargo compartment under the cargo compart‐

ment floor.

Vehicles with a tire pressure loss warn‐

ing system: If an emergency spare wheel is

installed the tire pressure loss warning sys‐

tem cannot function reliably. Only restart the

system again when the emergency spare

wheel has been replaced with a new wheel.

Vehicles with a tire pressure monitoring

system: If an emergency spare wheel is

installed the tire pressure monitoring system

cannot function reliably. For a few minutes

after an emergency spare wheel is installed,

the system may still display the tire pressure

of the removed wheel. Only restart the sys‐

tem again when the emergency spare wheel

has been replaced with a new wheel.

%

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Observe the information on mounting tires

(/ page 479).

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Open the tailgate.

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Open the cargo compartment floor.

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Remove the emergency spare wheel.

Inflating the emergency spare wheel

NOTE Overheating due to the tire infla‐

tion compressor running too long

*

Check the tire pressure of the emergency spare

wheel installed. Correct the pressure as neces‐

sary.

The maximum permissible speed with an emer‐

gency spare wheel installed is 50 mph

(80 km/h).

#

Do not run the tire inflation compressor

for longer than ten minutes without

interruption.

Be sure to also observe the following further

related subjects:

R

Notes on tire pressure (/ page 460)

Requirements:

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Tire and Loading Information placard

(/ page 467)

R

Comply with the manufacturer's safety notes

Do not install the emergency spare wheel with

snow chains.

on the sticker of the emergency spare wheel

and on the tire inflation compressor.

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Tire pressure table (/ page 461)

490 Wheels and tires

R

Remove the tire inflation compressor from

12 V socket:

the stowage space under the trunk floor

Observe the notes on the cigarette lighter:

(/ page 124)

(/ page 439).

R

Observe the notes on sockets:

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Turn the SmartKey to position 1 in the igni‐

tion lock.

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Press on and off switch 5 on the tire infla‐

tion compressor to I.

The tire inflation compressor is switched on.

The tire is inflated. The tire pressure is

shown on manometer 6.

Pump the tire to the specified tire pressure.

The specified tire pressure is stated on the

label of the emergency spare wheel.

When the specified tire pressure has been

reached, press on and off switch 5 on the

tire inflation compressor to 0.

The tire inflation compressor is switched off.

Turn the SmartKey to position g in the igni‐

tion lock.

If the tire pressure is higher than the speci‐

fied pressure, press pressure release valve

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Pull filler hose 2 and plug 4 out of the tire

inflation compressor housing.

Insert plug 8 of filler hose 2 in the socket

on the tire inflation compressor and then

turn it until plug 8 engages.

Unscrew the cap from the valve on the emer‐

gency spare wheel.

Screw union nut 3 of filler hose 2 onto the

valve.

Make sure on and off switch 5 of the tire

inflation compressor is set to 0.

Insert plug 4 in a socket in your vehicle.

Cigarette lighter socket: (/ page 124)

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Remove sticker 1 from the tire inflation

compressor housing and affix it to the instru‐

ment cluster within the driver's field of

vision.

#

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Wheels and tires 491

button 7 until the correct tire pressure has

been reached.

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Unscrew union nut 3 of filler hose 2 from

the valve.

Screw the valve cap of the emergency spare

wheel onto the valve again.

Stow filler hose 2 and plug 4 in the lower

section of the compressor housing.

Stow the tire inflation compressor in the

vehicle.

Wheels and tires -> Emergency spare wheel for Your Mercedes GLC Class SUV First Generation (2015-2021)

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