Page 163 of 222

Display messages
The following display messages appear in the multifunction display (Y page 83).
You can confirm certain display messages.
X Confirming messages: Press the OK button on the control lever briefly (Y page 83).Display messages Possible causes/consequences and
M
MSolutions ?
Switch Off Engine Switch Off Engine The coolant is too hot.
In addition, the
?warning lamp in the instrument cluster
lights up and a warning signal sounds.
X Stop the vehicle immediately as soon as it is safe to do so.
X Switch off the drive system immediately.
X Engage the parking brake.
X Make sure the air supply for the radiator is uninterrupted.
X Only start the drive system again after the display message
disappears. You could otherwise damage the drive system. $
(USA only)
J (Canada only)
Release Parking Release Parking
Brake Brake You are driving with the parking brake engaged.
In addition, the $(USA only), J(Canada only) warning
lamp in the instrument cluster lights up and a warning signal sounds.
X Release the parking brake. $
(USA only)
J (Canada only)
Brake System See
Brake System See
Operator's Manual Operator's Manual There is a slight malfunction in the vacuum supply of the brak-
ing system.
X When braking, continue to depress the brake pedal.
X Contact an authorized electric drive smart center. $
(USA only)
J (Canada only)
Brake Malfunction
Brake Malfunction
Y Service Required
Service Required There is a serious malfunction in the vacuum supply of the
braking system.
In addition, a warning signal sounds.
X Contact an authorized electric drive smart center. 5
Shift Shift
to
toN
Nor
or P
Pto
to
Start
Start You have attempted to start the engine while the automatic
transmission was in reverse gear
Ror drive position D.
X Shift the automatic transmission into park position Por
neutral position N.
X Make sure that Nor Pis shown in the multifunction display. Display messages
161>> Practical hints. Z
Page 164 of 222

Display messages Possible causes/consequences and
M
MSolutions 5
Transmission Not Transmission Not
in P in P The driver's door is open and the gear selector lever is in
position
R,Nor D.
In addition, a warning signal sounds. X Move the gear selector lever to P.5
Malfunction Serv. Malfunction Serv.
Req. Req. There is a malfunction in the coolant compressor or in the
heating/coolant circuit.
X Contact an authorized electric drive smart center. 5
Battery Power Too Battery Power Too
Low Low The outside temperature is too low. The full battery capacity is
not available.
The vehicle does not start.
X Charge the high‑voltage battery (Y page 112).ÿ
High-voltage Bat‐ High-voltage Bat‐
tery at Reserve tery at Reserve
Level Level The high‑voltage battery has reached reserve level.
X Charge the high‑voltage battery (Y page 112).*
Charge HV Battery Charge HV Battery
Immediately Immediately The charge level of the high‑voltage battery is below 5 %.
In addition, a warning signal sounds.
X Charge the high‑voltage battery (Y page 112).N
Engine Engine
Restart
Restart Not
Not
Possible
Possible There is a serious malfunction in the drive system. The drive
system can no longer be started.
In addition, a warning signal sounds.
X Do not restart the drive system.
X Contact an authorized electric drive smart center. N
High-Voltage Sys‐ High-Voltage Sys‐
tem tem
Y Service Required
Service Required There is a malfunction in the drive system, the electric motor
or the high‑voltage battery. There is a high‑voltage safety
problem.
In addition, the Nwarning lamp in the instrument cluster
lights up and a warning signal sounds.
X Contact an authorized electric drive smart center. þ
Reduce Reduce
YSpeed Speed The vehicle speed exceeds 84 mph (135 kmh).
In addition, a warning signal sounds.
X Reduce the speed.
The message disappears. 162
Display messages>> Practical hints.
Page 165 of 222

Display messages Possible causes/consequences and
M
MSolutions þ
Drive System Drive System
Y Service Required Service Required There is a malfunction in the drive system, the electric motor
or the high‑voltage battery.
In addition, the yellow þwarning lamp in the instrument
cluster lights up.
X Contact an authorized electric drive smart center. þ
Drive System Drive System
Y Switch
Switch Engine
EngineOff
Off There is a malfunction in the drive train. If the drive system
continues to run, the drive train can become damaged.
In addition, the red
þwarning lamp in the instrument clus-
ter lights up and a warning signal sounds.
X Switch off the drive system.
X Do not continue driving.
X Contact an authorized electric drive smart center. *
Do Not Tow Do Not Tow
(Away)
(Away) Either the drive or the high‑voltage system is faulty.
In addition, the
Nwarning lamp in the instrument cluster
lights up.
X It is recommended to have the vehicle transported by a
qualified specialist workshop.
Do not tow the vehicle on its own wheels. *
Charging Charging
Not
NotPossi‐
Possi‐
ble
ble There is a malfunction in the on-board charger. The high‑volt-
age battery cannot be charged.
X Contact an authorized electric drive smart center. *
Parking Lock Inac‐ Parking Lock Inac‐
tive tive The gear selector lever is in position
P, but the parking lock is
not detected.
In addition, a warning signal sounds.
X Apply the parking brake.
X Move the gear selector lever to another position, e.g. to R.
X Move the gear selector lever to Pagain. Ö
Driver´s Door Ajar Driver´s Door Ajar The driver’s door is open.
X Close the driver’s door. Ø
Door Ajar Door Ajar The passenger door is open.
X
Close the passenger door. Õ
Tailgate Open Tailgate Open A tailgate or the rear soft top
9
is open.
X Close the tailgates or the rear soft. 9
cabriolet only. Display messages
163>> Practical hints. Z
Page 204 of 222

Jump start assistance
Your vehicle’s 12-volt battery is located in the passenger footwell below the footrest
(Y page 199).
For jump starting, use the terminals of the battery, keeping the leads connected.
X Make sure the two vehicles do not touch.
X Switch off all electrical consumers.
X Engage the parking brake.
X Move the gear selector lever to park position P.
X Switch off the drive system.
X Get access to the battery in the passenger footwell (Y page 199).
X Remove the positive terminal cover. Position
Arepresents the charged battery of another vehicle or an equivalent starter
pack.
! Never invert the terminal connections!
X Connect positive terminal :of charged battery Awith positive terminal ;of your
vehicle’s battery Bwith a jumper cable. Clamp the jumper cable to positive termi-
nal :of charged battery Afirst.
X Start the engine of the vehicle with charged battery A.
X Connect negative terminal =of charged battery Awith negative terminal ?of your
vehicle’s battery Bwith a jumper cable. Clamp the jumper cable to negative terminal
= of charged battery Afirst.
X Start the drive system of your vehicle. You can now switch on minimal consumers. Do not
switch on large consumers such as the rear window defroster or headlamps. 202
Jump starting>> Practical hints.
Page 211 of 222

No. Accessory/Component Amperage Color
E
CPC, shifter, brake force booster vacuum
pump 7.5 A Brown
F
Coolant pumps 1 and 2, high-voltage battery 15 A Blue
G
ESP
®
control unit 25 A Neutral
H
Exterior lamp switch, turn signal lamp
switch, cockpit switch module, on-board
diagnostics socket, exterior rear view mir-
ror heating, anti-theft warning system,
rain-light sensor, charge level and power
gauges, central locking system, instrument
cluster, Tire Pressure Monitoring System
(TPMS), brake and turn signal lamps (left and right) 10 A Red
I
— — —
J
— — —
K
Safety circuit high-voltage battery 15 A Blue
L
— — —
M
Rear window wiper (coupé only) 15 A Blue
N
ESP
®
control unit, EPS control unit, restraint
systems 10 A Red
O
Electric drive components, engine control
unit, transmission control unit, on-board
diagnostics socket, sound generator 7.5 A Brown
P
Air conditioning system, exterior rear view
mirror adjustment, washer pump, audio, seat
heating, wiper switch, cruise control, soft
top switch (cabriolet only), backup lamp 10 A Red
Q
Auxiliary power outlet 15 A Blue
R
Left low‑beam headlamp 7.5 A Brown
S
Right low‑beam headlamp 7.5 A Brown
T
— — —
U
Right high‑beam headlamp 7.5 A Brown
V
Left high‑beam headlamp 7.5 A Brown
W
Electric drive components 7.5 A Brown Fuses
209>> Practical hints. Z
Page 216 of 222
Identification labels
Signs and labels
:
Air bag information signs
(sun visor)
; VIN (engine compartment)
= Emission control information label,
includes both federal and California
certification exhaust emission stand-
ards (engine compartment)
? Heat warning label (engine compart-
ment)
A Certification label (driver’s door
B‑pillar)
B Tire and loading information placard
(driver’s door B‑pillar)
C VIN (lower edge of windshield) Certification label
X Open the driver’s door. :
Certification label (on driver’s door
B‑pillar)
i Data shown on the example certifica-
tion label are for illustration purpose
only. These data are specific to each
vehicle and may vary from data shown in
the illustration. Refer to certification
label on vehicle for actual data specific to your vehicle. Example certification label (U.S. vehicles)
; Vehicle Identification Number (VIN)
= Paintwork code 214
Identification labels>> Technical data.
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