Get Breakdown assistance -> Flat tyre Guide for Mercedes C Class 4 Door Fourth Generation (2014-2021)

388 Breakdown assistance

In the event of a flat tyre, the following options

are available depending on your vehicle's equip‐

ment:

Flat tyre

Notes on flat tyres

R

Vehicles with MOExtended tyres: it is pos‐

&

WARNING Risk of accident due to a flat

tyre

sible to continue the journey for a short

period of time. Make sure you observe the

notes on MOExtended tyres (run-flat tyres)

(/ page 389).

A flat tyre severely affects the driving charac‐

teristics as well as the steering and braking

of the vehicle.

Tyres without run-flat characteristics:

#

R

Vehicles with a TIREFIT kit: you can repair

the tyre so that it is possible to continue the

journey for a short period of time. To do this,

use the TIREFIT kit (/ page 390).

#

Left-hand drive vehicle: pull tab 1

Do not drive with a flat tyre.

Change the flat tyre immediately with

an emergency spare wheel or spare

wheel. Alternatively, consult a qualified

specialist workshop.

upwards.

#

Right-hand drive vehicle: pull tab 1 down‐

R

Vehicles with Mercedes me connect: you

wards.

can make a call for breakdown assistance via

the overhead control panel in the case of a

breakdown (/ page 330).

All vehicles: change the wheel

(/ page 418).

#

Remove fire extinguisher 2.

Tyres with run-flat characteristics:

#

R

Observe the information and warning

notes on MOExtended tyres (run-flat

tyres).

Breakdown assistance 389

Notes on MOExtended tyres (run-flat tyres)

Driving distance possible in emergency

mode after the pressure loss warning:

ist workshop with regard to their further

use.

The defective tyre must be replaced in

every case.

&

WARNING Risk of accident when driving

in limp-home mode

Load condition

Driving distance pos‐

sible in emergency

mode

#

Driving in emergency mode impairs the han‐

dling characteristics of the vehicle.

With MOExtended tyres (run-flat tyres), you can

continue to drive your vehicle even if there is a

total loss of pressure in one or more tyres. How‐

ever, the tyre affected must not show any clearly

visible damage.

You can recognise MOExtended tyres by the

MOExtended marking which appears on the side

wall of the tyre.

Vehicles with tyre pressure monitoring sys‐

tem: MOExtended tyres may only be used in

conjunction with an activated tyre pressure mon‐

itoring system.

If a pressure loss warning message appears in

the multifunction display, proceed as follows:

Partially laden

Fully laden

80 km

30 km

#

Do not exceed the permissible maxi‐

mum speed of the MOExtended tyres.

#

Avoid any abrupt steering and driving

The driving distance possible in emergency

mode may vary depending on the driving style.

Observe the maximum permissible speed of

80 km/h.

If a tyre has gone flat and cannot be replaced

with an MOExtended tyre, you can use a stand‐

ard tyre as a temporary measure.

manoeuvres as well as driving over

obstacles (kerbs, pot holes, off-road).

This applies, in particular, to a loaded

vehicle.

#

Stop driving in the emergency mode if

you notice:

R

banging noise

R

vehicle vibration

TIREFIT kit storage location

R

smoke which smells like rubber

Plug-in hybrid: be sure to observe the notes in

the Supplement. You could otherwise fail to rec‐

ognise dangers.

continuous ESP^®intervention

R

Check the tyre for damage.

If driving on, observe the following notes.

R

cracks in the tyre sidewalls

R

#

After driving in emergency mode, have

the rims checked by a qualified special‐

390 Breakdown assistance

Mercedes-AMG vehicles: observe the notes in

the Supplement. You could otherwise fail to rec‐

ognise dangers.

You can find information on the power cate‐

gory (LK) and/or electrical data on the back

of the tyre inflation compressor.

The tyre inflation compressor is mainte‐

nance-free. If there is a malfunction, please

contact a qualified specialist workshop.

&

WARNING Risk of accident when using

tyre sealant

The tyre sealant may be unable to seal the

tyre properly, especially in the following

cases:

The TIREFIT kit is located under the boot floor.

R

there are cuts or punctures in the tyre

larger than damage previously men‐

tioned.

the wheel rim is damaged.

you have driven at very low tyre pres‐

sures or on a flat tyre.

Using the TIREFIT kit

Requirements:

R

Tyre sealant bottle

R

TIREFIT sticker

R

Tyre inflation compressor

Gloves (depending on the vehicle equipment)

#

Do not drive on.

Consult a qualified specialist workshop.

R

#

1

2

Tyre sealant bottle

Tyre inflation compressor

TIREFIT kit storage location: (/ page 389)

&

WARNING Risk of injury and poisoning

from tyre sealant

You can use TIREFIT tyre sealant to seal perfora‐

tion damage of up to 4 mm, particularly those in

the tyre contact surface. You can use TIREFIT in

outside temperatures down to -20 °C.

% Depending on the power category (LK), the

tyre inflation compressor weighs as follows:

Tyre sealant is hazardous to health and cau‐

ses irritation. Do not allow it to come into

contact with your skin, eyes or clothing, and

do not swallow it. Do not inhale any vapours.

Keep the tyre sealant away from children.

R

LK1 – 12 V/10 A, 120 W, 0.8 kg

R

LK2 – 12 V/15 A, 180 W, 0.9 kg

Breakdown assistance 391

Comply with the manufacturer's safety notes on

the sticker on the tyre inflation compressor.

Observe the following if you come into con‐

tact with the tyre sealant:

Have the tyre sealant bottle replaced in a quali‐

fied specialist workshop every five years.

#

Rinse off the tyre sealant from your skin

using water immediately.

#

Do not remove any foreign objects which

#

If tyre sealant gets into your eyes, thor‐

oughly rinse them using clean water

immediately.

have entered the tyre.

#

If tyre sealant has been swallowed,

thoroughly rinse out your mouth imme‐

diately and drink plenty of water. Do not

induce vomiting and seek medical

attention immediately.

#

Change out of clothing which has come

into contact with tyre sealant immedi‐

ately.

If an allergic reaction occurs, seek med‐

ical attention immediately.

#

Pull plug 4 with the cable and hose 5 out

#

of the tyre inflation compressor housing.

#

Affix part 1 of the TIREFIT sticker to the

instrument cluster within the driver's field of

vision.

Affix part 2 of the TIREFIT sticker near the

valve on the wheel with the defective tyre.

Push the plug of hose 5 into flange 6 of

tyre sealant bottle 1 until the plug engages.

NOTE Overheating due to the tyre infla‐

tion compressor running too long

*

Place tyre sealant bottle 1 head downwards

into recess 2 of the tyre inflation compres‐

sor.

#

Do not run the tyre inflation compres‐

sor for longer than ten minutes without

interruption.

392 Breakdown assistance

#

Do not switch off the tyre inflation compres‐

sor during this phase!

Very slowly drive forwards or reverse approx‐

imately 10 m.

Pump up the tyre again.

#

Let the tyre inflation compressor run for a

maximum of ten minutes.

The tyre should then have attained a tyre

pressure of at least 200 kPa (2.0 bar/

29 psi).

After a maximum of ten minutes the tyre

pressure must be at least 200 kPa (2.0 bar/

29 psi).

&

WARNING Risk of accident due to the

specified tyre pressure not being

attained

If tyre sealant leaks out, make sure you clean the

affected area as quickly as possible. It is prefera‐

ble to use clean water.

If you get tyre sealant on your clothing, have it

cleaned as soon as possible with perchloroethy‐

lene.

#

Remove the cap from valve 7 on the faulty

tyre.

If the minimum tyre pressure is not reached

after the specified time, the tyre is too badly

damaged. The tyre sealant cannot repair the

tyre in this instance.

#

Screw filling hose 8 onto valve 7.

#

Insert plug 4 into a 12 V socket in your

vehicle.

If, after ten minutes, a tyre pressure of

200 kPa (2.0 bar/29 psi) has not been

attained:

The braking and driving characteristics may

be greatly impaired.

#

Switch on the ignition.

Press on and off switch 3 on the tyre infla‐

tion compressor.

The tyre inflation compressor is switched on.

The tyre is inflated. First, tyre sealant is pum‐

ped into the tyre. The pressure may briefly

rise to approximately 500 kPa (5 bar/73 psi).

#

Do not continue driving.

#

Switch off the tyre inflation compressor.

#

Consult a qualified specialist workshop.

#

Unscrew the filling hose from the valve of the

defective tyre.

Please note that tyre sealant may leak out when

unscrewing the filling hose.

Breakdown assistance 393

If, after ten minutes, a tyre pressure of

#

Therefore, place the filling hose in the

plastic bag that contained the TIREFIT

kit.

&

WARNING Risk of accident due to the

specified tyre pressure not being

attained

200 kPa (2.0 bar/29 psi) has been attained:

&

WARNING Risk of accident from driving

with sealed tyres

If the specified tyre pressure is not reached,

the tyre is too badly damaged. The tyre seal‐

ant cannot repair the tyre in this instance.

The braking and driving characteristics may

be greatly impaired.

ENVIRONMENTAL NOTE Environmental

pollution caused by environmentally irre‐

sponsible disposal

+

A tyre temporarily sealed with tyre sealant

impairs the handling characteristics and is

not suitable for higher speeds.

Tyre sealant contains pollutants.

#

Adapt your driving style accordingly and

drive carefully.

#

Do not continue driving.

Consult a qualified specialist workshop.

Have the tyre sealant bottle disposed of

professionally, e.g. at a Mercedes-Benz

Service Centre.

#

Do not exceed the maximum speed

limit with a tyre that has been repaired

using tyre sealant.

Countries that have Mercedes-Benz

Service24h: you will find a sticker with the tele‐

phone number, e.g. on the B‑pillar on the driver's

side.

#

Switch off the tyre inflation compressor.

#

Unscrew the filling hose from the valve of the

defective tyre.

#

Observe the maximum permissible speed for

a tyre sealed with tyre sealant 80 km/h.

#

Correct the tyre pressure if it is still at least

Stow the tyre sealant bottle, the tyre inflation

compressor and the warning triangle.

#

Affix the upper section of the TIREFIT sticker

to the instrument cluster in a location where

it will be easily seen by the driver.

130 kPa (1.3 bar/19 psi). See the tyre pres‐

sure table on the fuel filler flap for values.

#

Pull away immediately.

#

To increase the tyre pressure: switch on

Stop driving after approximately ten minutes

and check the tyre pressure using the tyre

inflation compressor.

the tyre inflation compressor.

NOTE Staining from leaking tyre sealant

*

After use, excess tyre sealant may leak out

from the filling hose.

The tyre pressure must now be at least

130 kPa (1.3 bar/19 psi).

Breakdown assistance -> Flat tyre for Your Mercedes C Class 4 Door Fourth Generation (2014-2021)

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