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Vehicle care227NumberUsage1–2Power window rear3–4Rechargeable energy
storage system 15–6–7Left high beam headlight8Right high beam headlight9Left low beam headlight10Right low beam headlight11Horn12–13Front wiper motor driver14Tailgate15Front wiper motor co-driver16Electronic brake control
module supply electronicsNumberUsage17Rear wiper18Tailgate19Seat module front20Washer21–22Linear power module23Electronic brake control
module supply motor24Seat module rear25–26Transmission range control
module27Aero shutter28Auxiliary oil pump29E-booster motor source30Front power windows31In-panel bussed electrical
centreNumberUsage32Rear window defogger33Heated exterior rear view
mirror34Pedestrian friendly alert
function35–36–37Current sensor38Rain sensor39–40E-booster (ECU)41Power line communication
module42Automatic occupant
sensing43Window switch44Rechargeable energy
storage system
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228Vehicle careNumberUsage45Vehicle integration control
module46Integrated chassis control
module47Headlight levelling device48Integrated chassis control
module49Interior rear view mirror50–51E-booster52Rear camera53–54A/C control module55Rechargeable energy
storage system pump56–57Power electronics coolant
pump58Engine control moduleNumberUsage59Electric steering column
lock60HVAC electric heater61On-board charging module62Transmission range control
module 163Electric cooling fan64Engine control module65Auxiliary heater pump66–67Drive unit controller68Rear window defogger69–70A/C control module71–72Transmission range control
moduleNumberUsage73Single power inverter
module74–
After having changed defective fuses,
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunctions may occur.
Instrument panel fuse boxThe fuse box is located on the driver's
side behind a cover in the instrument
panel.
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Vehicle care229To open the compartment, compress
the locking tabs, fold cover down and
remove.The instrument panel fuse block is on the left side of the instrument panel.
To access the fuses, open the fuse
panel door by pulling out.NumberUsage1Video processing module2Indicator light solar sensor3Side blind zone assistant4Passive entry, passive start5Central gateway module6Body control module 47Body control module 38Body control module 29Body control module 110Trailer interface module 111Amplifier12Body control module 813Data link connector 114Automatic parking assist15–NumberUsage16Single power inverter
module 117Body control module 618Body control module 519–20–21–22–23USB24Wireless charging module25Reflected LED alert display26Automatic heated steering
wheel27–28Instrument cluster 229Trailer interface module 230Headlight levelling device31OnStar
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230Vehicle careNumberUsage32–33Heating, ventilation, and airconditioning module34–35Instrument panel cluster 136Radio37–38–39–40–41–42–43Body control module 744Sensing and diagnostic
module45Front camera module46Vehicle integration control
moduleNumberUsage47Single power inverter
module 248Electric steering column
lock49Auxiliary jack50Steering wheel controls51Steering wheel controls
backlighting52Smartphone remote func‐
tion module53Auxiliary power outlet54–55Logistic56–57–58–59–60–To reinstall the door, insert the bottom tab first, then push the door back into its original location.
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Vehicle care235replacement or alternative tyres and
wheels allow the tyre pressure
monitoring system to continue to
function properly.
A spare wheel is not equipped with a pressure sensor. The tyre pressure
monitoring system is not operational
for these wheels. Control indicator w
illuminates. For the further three
wheels the system remains
operational.
The use of commercially-available
liquid tyre repair kits can impair the
function of the system. Factory-
approved repair kits can be used.
Operating electronic devices or being
close to facilities using similar wave
frequencies could disrupt the tyre
pressure monitoring system.
Each time the tyres are replaced, tyre pressure monitoring system sensors
must be dismounted and serviced.
For the screwed sensor, replace
valve core and sealing ring. For the
clipped sensor, replace complete
valve stem.Vehicle loading status
Adjust tyre pressure to load condition
according to the tyre information label or tyre pressure chart 3 254, and
select the appropriate setting in the
menu Tyre load in the Options menu
in the Driver Information Centre 3 82.
This setting is the reference for the
tyre pressure warnings.
The available settings are:
● Light for comfort pressure up to
three people.
● Eco for Eco pressure up to three
people.
● Max for full loading.
Auto learn function
Each tyre pressure sensor has a
unique identification code. The
identification code must be matched
to a new wheel position after rotating
the wheels or exchanging the
complete wheel set and if one or more
tyre pressure sensors were replaced.
After changing wheels, the vehicle
must be stationary for approx.
20 minutes before the system
recalculates. The following relearn
process takes up to 10 minutes of
driving with a minimum speed of
20 km/h. In this event, w can be
displayed or pressure values can
swap in the Driver Information Centre.
If problems occur during the relearn
process, a warning message will be
displayed in the Driver Information
Centre.
Tread depthCheck 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).
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238Vehicle care2. Remove the compressor and thesealant bottle.
3. Remove the electrical connection cable and air hose from the
storage compartments on the
underside of the compressor.
4. Screw the compressor air hose to
the connection on the sealant
bottle.
5. Fit the sealant bottle into the retainer on the compressor.
Set the compressor near the tyre
in such a way that the sealant
bottle is upright.6. Unscrew valve cap from defective
tyre.
7. Screw the filler hose to the tyre valve.
8. The switch on the compressor must be set to J.
9. Connect the compressor plug to the power outlet or cigarette
lighter socket.
To avoid discharging the battery, we recommend running the
engine.
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242Vehicle careJump starting the vehicle
Lead connection order:1. Connect the red lead to the positive terminal of the booster
vehicle battery.
2. Connect the other end of the red lead to the positive terminal of
your vehicle.
3. Connect the black lead to the negative terminal of the booster
vehicle battery.
4. Connect the other end of the black
lead to the negative battery
terminal (stud).
Route the leads so that they cannot
catch on rotating parts in the engine
compartment.
To start the vehicle: 1. Start the engine of the vehicle providing the jump.
2. After 5 minutes, press POWERm
to switch on the vehicle.
After the instrument cluster
initialises, the vehicle will use
power from the high voltage
battery to charge the 12 V vehicle
battery.
3. Switch on electrical consumers (e.g. headlights, heated rear
window) of the vehicle receiving
the jump start.
4. Reverse above sequence exactly when removing leads.Towing
Towing the vehicleCaution
Incorrect towing of a disabled
vehicle may cause damage to the
vehicle. The disabled vehicle
should only be towed on a flatbed
car carrier.
Ensure the vehicle is only towed
by well trained technicians.
Wrap a cloth around the tip of a slot
screwdriver to prevent paint damage. Insert the screwdriver in the slot at the
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Vehicle care243short edge of the cap. Release the
cap by carefully moving the
screwdriver sidewards.
The towing eye is stowed with the vehicle tools 3 231.
Screw in the towing eye anticlockwise
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 the vehicle 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 3 170, otherwise the
vehicle may automatically brake during towing.
Shift the selector lever of the electric
drive unit into N.
Release the electric parking brake.
Caution
Drive slowly. Do not drive jerkily.
Excessive tractive force can
damage the vehicle.
When the vehicle 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.
Seek the assistance of a workshop.
After towing, unscrew the towing eye.
Insert cap at the bottom and close.
Towing another vehicle The vehicle is neither designed nor
intended to tow a trailer or another
vehicle.