FTM Flat Tire Monitor
The concept
The system does not measure the actual infla‐
tion pressure in the tires.
It detects a tire inflation pressure loss by com‐
paring the rotational speeds of the individual
wheels while moving.
In the event of a tire inflation pressure loss, the
diameter and therefore the rotational speed of
the corresponding wheel changes. This will be
detected and reported as a flat tire.
Functional requirements
The system must have been initialized when
the tire inflation pressure was correct; other‐
wise, reliable flagging of a flat tire is not as‐
sured. Initialize the system after each correc‐
tion of the tire inflation pressure and after
every tire or wheel change.
Status display The current status of the Flat Tire Monitor can
be displayed on the Control Display, e.g.,
whether or not the FTM is active.
On the Control Display:1. "Vehicle info"2."Vehicle status"3. "Flat Tire Monitor (FTM)"
The status is displayed.
Initialization When initializing the once set inflation tire pres‐
sures serve as reference values in order to de‐
tect a flat tire. Initialization is started by con‐
firming the inflation pressures.
Do not initialize the system when driving with
snow chains.
On the Control Display:
1. "Vehicle info"2."Vehicle status"3. "Perform reset"4.Start the engine - do not drive off.5.Start the initialization with "Perform reset".6.Drive away.
The initialization is completed while driving,
which can be interrupted at any time.
The initialization automatically continues when
driving resumes.
Indication of a flat tire The yellow warning lamp lights up. A
Check Control message is displayed.
There is a flat tire or a major loss in tire
inflation pressure.
1.Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu‐
vers.2.Check whether the vehicle is fitted with
normal tires or run-flat tires.
Run-flat tires, refer to page 193, are la‐
beled with a circular symbol containing the
letters RSC marked on the tire's sidewall.
WARNING
A damaged regular tire with low or miss‐
ing tire inflation pressure impacts handling,
such as steering and braking response. Run-flat
tires can maintain limited stability. There is risk
of an accident. Do not continue driving if the
vehicle is not equipped with run-flat tires. Fol‐
low the information on run-flat tires and con‐
tinued driving with these tires. ◀
When a flat tire is indicated, DSC Dynamic Sta‐
bility Control is switched on if needed.
System limits A natural, even tire inflation pressure loss in all
four tires will not be recognized. Therefore,
check the tire inflation pressure regularly.
Sudden serious tire damage caused by external
circumstances cannot be recognized in ad‐
vance.
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The system could be delayed or malfunction in
the following situations:▷When the system has not been initialized.▷When driving on a snowy or slippery road
surface.▷Sporty driving style: spinning traction
wheels, high lateral acceleration (drifting).▷When driving with snow chains.
Actions in the event of a flat tire
Normal tires
1.Identify the damaged tire.
Check the air pressure in all four tires, e.g.
using the tire pressure gage of a tire repair
kit.
If the tire inflation pressure in all four tires is
correct, the Flat Tire Monitor may not have
been initialized. In this case, initialize the
system.
If identification of flat tire damage is not
possible, please contact a dealer’s service
center or another qualified service center or
repair shop.2.Repair the flat tire, e.g. with a tire repair kit
or by changing the tire.
Run-flat tires
Maximum speed
You may continue driving with a damaged tire at speeds up to 50 mph/80 km/h.
Continued driving with a flat tire
If continuing to drive with a damaged tire:
1.Avoid sudden braking and steering maneu‐
vers.2.Do not exceed a speed of 50 mph/80 km/h.3.Check the air pressure in all four tires at the
next opportunity.
If the tire inflation pressure in all four tires is
correct, the Flat Tire Monitor may not havebeen initialized. In this case, initialize the
system.
Possible driving distance with complete loss of
tire inflation pressure:
The possible driving distance with a flat tire de‐
pends on cargo load, driving style and road
conditions.
A vehicle with an average load has a possible
driving range of approx. 50 miles/80 km.
A vehicle with a damaged tire reacts differently,
e.g., it has reduced lane stability during brak‐
ing, a longer braking distance and different
self-steering properties. Adjust your driving
style accordingly. Avoid abrupt steering ma‐
neuvers or driving over obstacles, e.g., curbs,
potholes, etc.
Because the possible driving distance depends
on how the vehicle is used during the trip, the
actual distance may be shorter or longer de‐
pending on the driving speed, road conditions,
external temperature, cargo load, etc.
WARNING
Your vehicle handles differently when a
run-flat tire is damaged and has low or missing
tire inflation pressure, e.g., your lane stability is
reduced when braking, braking distances are
longer and the self-steering properties will
change. There is risk of an accident.
Drive moderately and do not exceed a speed of
50 mph/80 km/h. ◀
Final tire failure
Vibrations or loud noises while driving can indi‐
cate the final failure of a tire.
Reduce speed and stop; otherwise, pieces of
the tire could come loose and cause an acci‐
dent.
Do not continue driving. Contact a dealer’s
service center or another qualified service cen‐
ter or repair shop.
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Deactivating DSC: DSC OFFWhen DSC is deactivated, driving stability is re‐
duced during acceleration and when driving in
curves.
To increase vehicle stability, activate DSC again
as soon as possible.
Deactivating DSC Press and hold this button but not lon‐
ger than approx. 10 seconds, until the
indicator lamp for DSC OFF lights up in the in‐
strument cluster and displays DSC OFF.
DSC is switched off.
Activating DSC Press button.
DSC OFF and the DSC OFF indicator
lamp go out.
Indicator/warning lights
When DSC is deactivated, DSC OFF is displayed
in the instrument cluster.
The indicator lamp lights up: DSC is de‐
activated.
Automatic activation When DSC is deactivated, automatic activation
occurs in the following situations:▷The vehicle has a flat tire.▷When activating cruise control in TRACTION
or DSC OFF mode.
DTC Dynamic Traction
Control
The concept
DTC is a version of the DSC where forward mo‐
mentum is optimized.
The system ensures maximum headway on
special road conditions, for example unplowed
snowy roads or loose road surfaces, but with
somewhat limited vehicle stability.
When DTC is activated, the vehicle has maxi‐
mum traction. Driving stability is limited during
acceleration and when driving in curves.
Therefore drive with appropriate caution.
You may find it useful to briefly activate DTC
under the following special circumstances:▷When driving in slush or on uncleared,
snow-covered roads.▷When freeing vehicle from deep snow or
driving off from loose grounds.▷When driving with snow chains.
Deactivating/activating DTC Dynamic
Traction Control
Activating DTC Press button.
TRACTION is displayed in the instru‐
ment cluster and the indicator lamp for DSC
OFF lights up.
Deactivating DTC Press button again.
TRACTION and the DSC OFF indicator
lamp go out.
Performance Control
Performance Control enhances the agility of the
vehicle.
To increase maneuverability, with a corre‐
spondingly sporty driving style, wheels are
braked individually.
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3.Insert the connector into a power socket in‐
side the vehicle.4.Correct the tire inflation pressure to at least
2.0 bar.▷Increase pressure: with the ignition
turned on or the engine running, switch
on the compressor.▷To reduce the pressure: press the but‐
ton on the compressor.
Continuing the trip
Do not exceed the maximum permissible speed
of 50 mph/80 km/h.
Reinitialize the Flat Tire Monitor, refer to
page 113.
Reinitialize the Tire Pressure Monitor, refer to
page 109.
Replace the nonworking tire and the sealant
container of the Mobility System as soon as
possible.
Snow chains Fine-link snow chains
The manufacturer of your vehicle recommends use of fine-link snow chains. Certain types of
fine-link snow chains have been tested by the
manufacturer of the vehicle and recommended
as road-safe and suitable.
Information regarding suitable snow chains is
available from a dealer’s service center or an‐ other qualified service center or repair shop.
Use
WARNING
With the mounting of snow chains on un‐
suitable tires, the snow chains can come into
contact with vehicle parts. There is a risk of ac‐
cidents or a risk of property damage. Only
mount snow chains on tires that are designated
by their manufacturer as suitable for the use of
snow chains. ◀
Use only in pairs on the front wheels, equipped
with the tires of the following size:▷175/65 R 15.▷175/60 R 16.
John Cooper Works:
▷185/50 R 17.
Follow the snow chain manufacturer's instruc‐
tions.
Make sure that the snow chains are always suf‐
ficiently tight. Re-tighten as needed according
to the snow chain manufacturer's instructions.
Do not initialize the Flat Tire Monitor after
mounting snow chains, as doing so may result
in incorrect readings.
Do not initialize the Tire Pressure Monitor after
mounting snow chains, as doing so may result
in incorrect readings.
When driving with snow chains, briefly activate
Dynamic Traction Control if needed.
Maximum speed with snow chains
Do not exceed a speed of 30 mph/50 km/h
when using snow chains.
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AppendixAny updates to the Owner's Manual of the ve‐
hicle are listed here.
Updates made after the editorial deadline
These chapters of the printed Owner's Manual
contain updates made after the editorial dead‐
line.▷Opening and closing: convertible top: Man‐
ually closing the convertible top, refer to
page 50.▷Wheels and tires: snow chains: Use, refer to
page 197.Seite 237AppendixREFERENCE237
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Post Crash — iBrake 121
Power failure 218
Power windows 45
Prescribed engine oil types 202
Pressure, tire air pressure 186
Pressure warning, tires 113
Profile, see Personal Pro‐ file 36
Protective function, win‐ dows 46
Push-and-turn switch, see Controller 19
R
Racetrack operation 169
Radiator fluid 204
Radio-operated key, see Re‐ mote control 34
Radio ready state 66
Radio, refer to Integrated Owner's Manual
Rain sensor 73
Ratchet straps, securing cargo 171
Rear fog lights 103
Rear lights 212
Rear luggage rack 171
Rearview camera 137
Rearview mirror 60
Rear window de‐ froster 146, 149
Recirculated-air filter 149
Recirculated-air mode 145, 148
Recommended fuel grade 185
Recommended tire brands 192
Refueling 182
Remaining range 86
Remote control/key 34
Remote control, blocking 35
Remote control, malfunc‐ tion 39 Remote control, replacing the
battery 35
Remote control, univer‐ sal 151
Replacement fuse 219
Replacing parts 208
Replacing the battery, remote control 35
Replacing wheels/tires 192
Reporting safety malfunc‐ tions 10
RES CNCL button, see camera- based cruise control 126
RES CNCL button, see Cruise control 131
Reserve warning, see Range 86
Reset, Tire Pressure Monitor TPM 110
Retreaded tires 193
Roadside parking lights 101
Rollover protection sys‐ tem 108
RON recommended fuel grade 185
Roof load capacity 235
Roof, see convertible top 47
RSC Run Flat System Compo‐ nent, see Run-flat tires 193
Rubber components, care 229
Run-flat tires 193
S Safe braking 167
Safety belt reminder for driv‐ er's seat and front passenger
seat 57
Safety belts 56
Safety belts, care 229
Safety belts, rear 57
Safety systems, airbags 105
Saving fuel 173
Screen, refer to Control Dis‐ play 18 Screwdriver 208
Sealant 194
Seat belts, see Safety belts 56
Seat heating, front 56
Seating position for chil‐ dren 63
Seats 54
Securing cargo 171
Selection list in instrument cluster 89
Selector lever, Steptronic transmission 76
Sensors, care 230
Service and warranty 8
Service requirements, Condi‐ tion Based Service CBS 206
Service requirements, dis‐ play 86
Service, Roadside Assis‐ tance 220
SET button, see camera-based cruise control 126
SET button, see Cruise con‐ trol 131
Settings, locking/unlocking 43
Settings, mirrors 60
Settings on Control Display 92
Shift paddles on the steering wheel 77
Shift point indicator, Head-Up Display 96
Side airbag 105
Signaling, horn 14
Signals when unlocking 44
Sitting safely 54
Size 234
Snow chains 197
Socket 155
Socket, OBD Onboard Diag‐ nostics 207
Spare fuse 219
Spare tire, see Emergency wheel 215
Speed, average 90
Speed limit detection 87 Seite 248REFERENCEEverything from A to Z248
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