Page 252 of 315
250Vehicle careNo.Circuit1Rear seat heating (only for vehi‐cles without alarm horn)2Climate control system, fan3Power seat driver side4Power seat passenger side5–6Power window front7ABS8Heated steering wheel9Body control module 810Power window rear11Sunroof12Body control module 413Seat heating (only on vehicles
without alarm horn)14Exterior mirror15Body control module 116Body control module 7No.Circuit17Body control module 618Body control module 319Data link connector20Airbag system21Climate control system22Central locking system, tailgate23Electronic key system24Power seat memory function25Airbag system steering wheel26Ignition switch/Steering column
lock27Body control module 228USB socket29Cigarette lighter/Power outlet
front30Selector lever31Rear window wiper32Transmission control module
Page 254 of 315
252Vehicle careNo.Circuit1–2–3Trailer module4–5–6–7–8–9–10Service11–12Front seat heating (on vehicles
with alarm horn)13Rear seat heating (on vehicles
with alarm horn)14Ignition15Seat ventilation16Trailer outletNo.Circuit17Trailer outlet18–19–20–21–22–
After having changed defective fuses,
close the fuse box cover and press
until it engages.
Additional fuses are located near the
vehicle battery.
Page 261 of 315

Vehicle care259wheel and left side rear wheel. The
turn signal light at the current active position is illuminated until sensor ismatched.
Consult a workshop for service. There
are two minutes to match the first
wheel position, and five minutes
overall to match all four wheel
positions. If it takes longer, the
matching process stops and must be
restarted.
The tyre pressure sensor matching
process is:
1. Apply the parking brake.
2. Turn the ignition on.
3. On vehicles with automatic transmission: set the selector
lever to P.
On vehicles with manual
transmission: select neutral.
4. Midlevel display: Use MENU on the turn signal
lever to select the Vehicle
Information Menu ? in the
Driver Information Centre.
Uplevel display:Press p on the steering wheel to
open main menu page.
Select the Info page with Q or P.
Confirm with 9.
5. Select the tyre pressure menu. Midlevel display:
Uplevel display:
6. Midlevel display:Press SET/CLR to begin the
sensor matching process. A
message requesting acceptance
of the process should be
displayed.
Press SET/CLR again to confirm
the selection. The horn sounds
twice to indicate that the receiver
is in relearn mode.
Uplevel display:
Press 9 to begin the sensor
matching process. The horn
sounds twice to indicate that the receiver is in relearn mode.
7. Start with the left side front wheel.
Page 262 of 315

260Vehicle care8. Place the relearn tool against thetyre sidewall, near the valve stem.Then press the button to activate
the tyre pressure sensor. A horn
chirp confirms that the sensor
identification code has been
matched to this wheel position.
9. Proceed to the right side front wheel, and repeat the procedure
in step 8.
10. Proceed to the right side rear wheel, and repeat the procedure
in step 8.
11. Proceed to the left side rear wheel, and repeat the procedure
in step 8. The horn sounds twice
to indicate that the sensor
identification code has been
matched to the left side rear
wheel, and the tyre pressure
sensor matching process is no
longer active.
12. Turn off the ignition.13. Set all four tyres to the recommended air pressure level
as indicated on the tyre pressure
information label.
14. Ensure the tyre loading status is set according to the selected
pressure 3 114.
Tread depth Check tread depth at regular
intervals.
Tyres should be replaced for safety
reasons at a tread depth of 2-3 mm
(4 mm for winter tyres).
For safety reasons it is recommended
that the tread depth of the tyres on
one axle should not vary by more than 2 mm.
The legally permissible minimum
tread depth (1.6 mm) has been
reached when the tread has worn
down as far as one of the tread wear
indicators (TWI). Their position is
indicated by markings on the
sidewall.
If there is more wear at the front than
the rear, swap round front wheels and rear wheels periodically. Ensure that
the direction of rotation of the wheels remains the same.
Tyres age, even if they are not used.
We recommend tyre replacement
every six years.
Page 274 of 315

272Vehicle careTowingTowing the vehicle
Wrap a cloth around the tip of a flat
screwdriver to prevent paint damage.
Insert a screwdriver in the slot at the
lower part of the cap. Release the cap
by carefully moving the screwdriver
downwards.
The towing eye is stowed with the
vehicle tools 3 253.
Screw in the towing eye as far as it will
go until it stops in a horizontal
position.
Attach a tow rope – or better still a tow rod – to the towing eye.
The towing eye must only be used for
towing and not for recovering the
vehicle.
Switch on ignition to release steering wheel lock and to permit operation of
brake lights, horn and windscreen
wiper.
Caution
Deactivate the driver assistance
systems like active emergency
braking 3 197, otherwise the
vehicle may automatically brake during towing.
Switch the selector lever to neutral.
Release the parking brake.
Caution
Drive slowly. Do not drive jerkily.
Excessive tractive force can
damage the vehicle.
When the engine is not running,
considerably more force is needed to
brake and steer.
To prevent the entry of exhaust gases from the towing vehicle, switch on the
air recirculation and close the
windows.
Vehicles with automatic transmission: The vehicle must be towed facing
forwards, not faster than 50 mph nor further than 60 miles. In all other
Page 312 of 315

310Head restraint adjustment .............8
Head restraints ............................ 46
Heated mirrors ............................. 40
Heated rear window ..................... 43
Heated steering wheel .................92
Heating .................................. 54, 56
Heating and ventilation system . 145
High beam ......................... 112, 135
High beam assist ........................112
Hill start assist ........................... 180
Horn ....................................... 13, 92
I
Identification plate .....................281
Ignition switch positions .............156
Immobiliser .......................... 38, 112
Indicators .................................... 102
Info Display ................................. 120
Information displays.................... 114
Instrument cluster ........................99
Instrument panel fuse box .........249
Instrument panel illumination .....246
Instrument panel illumination control .................................... 142
Instrument panel overview ........... 10
Interior care ............................... 275
Interior lighting ............................ 142
Interior lights ...................... 142, 246
Interior mirrors .............................. 40Interruption of power supply ......173
Introduction .................................... 3
J Jump starting ............................. 270
K Key, memorised settings ..............24
Keys ............................................. 20
Keys, locks ................................... 20
L
Lane keep assist ................110, 215
Lashing eyes ............................... 81
LED headlights ...................112, 136
Lighting features .........................143
Light switch ................................ 134
Load compartment ................30, 73
Load compartment cover .............79
Load compartment fuse box ......251
Loading information .....................88
Low fuel ..................................... 112
M
Malfunction indicator light ..........109
Manual anti-dazzle ......................40
Manual mode .....................172, 176
Manual seat adjustment ...............48
Manual transmission .................. 173
Manual transmission automated 174
Manual windows ..........................41Massage....................................... 55
Maximum speed ......................... 255
Memorised settings ......................24
Midlevel display .......................... 114
Mirror adjustment ........................... 9 Misted light covers .....................141
N
Natural gas ......................... 104, 220
New vehicle running-in ..............156
Number plate light .....................245
O
Object detection systems ...........200
Odometer ................................... 103 Oil, engine .......................... 278, 283
OnStar ........................................ 130
Outside temperature ....................95
Overrun cut-off ........................... 161
P Parking ................................ 18, 164
Parking assist ............................ 200
Parking brake ............................ 178
Parking lights ............................. 141
Particulate filter ........................... 166
Performance .............................. 288
Performing work ........................230
Pollen filter ................................. 154
Power button .............................. 157
Power outlets ............................... 97