2017 MERCEDES-BENZ GLE SUV HYBRID check engine light

Hybrid drive system
General notes
Hybrid technology combines a fuel efficient
internal combustion engine with a powerful
electric motor.
Important safety notes
Danger of electric shock
GDANGER
The vehicle's high-voltage electrical system is under high voltage. If you modify components
in the vehicle's high-voltage electrical system
or touch damaged components, you may be
electrocuted. The components in the vehi-
cle's high-voltage electrical system may be
damaged in an accident, although the damage
is not visible. There is a risk of fatal injury.
Following an accident, do not touch any high-
voltage components and never modify the
vehicle's high-voltage electrical system. Have
the vehicle towed away after an accident and
the vehicle's high-voltage electrical system
checked by a qualified specialist workshop.
When towing a vehicle after an accident, be sure
to observe the following sections in the vehicle
Operator's Manual:
RTransporting the vehicle
RTowing the vehicle with the rear axle raised
RTowing a vehicle with both axles on the
ground
Read the safety instructions on towing and tow-
starting (
Ypage 53).
All components of the hybrid drive system are
marked with yellow warning stickers that warn
you of the danger of high voltage. The cables of
the vehicle's high-voltage electrical system are
orange in color.
The ignition must be switched off when carrying
out general tasks, such as changing bulbs or
checking the coolant level.
Automatic switching off of the hybrid
drive system
If components of the restraint system are acti-
vated during an accident, the hybrid drive sys-
tem is automatically deactivated.
The hybrid drive system is not activated when
the vehicle is started if:
Ran electrical short circuit is detected in the
hybrid drive system
Ran electrical connection in the hybrid drive
system is disconnected
This ensures that you do not come into contact
with high voltage.
Manual switching off of the hybrid drive
system
The hybrid drive system can be deactivated
manually using the high voltage switch-off
device.
!To prevent damage to the hybrid drive sys-
tem please observe the following instruc-
tions:
Ronly deactivate the hybrid drive system
manually in the following situations.
Rwork on the hybrid drive system may only
be carried out at a qualified specialist work-
shop, even when it has been deactivated
manually.
Deactivate the hybrid system manually if:
Rthe 6 restraint system warning lamp in the
instrument cluster lights up after an accident
Rthe vehicle is badly damaged, e.g. after an
accident, and the restraint system compo-
nents were not activated
Rthe vehicle is badly damaged and has to be
towed or transported
10Hybrid drive system
Safety

Occupant safety
Restraint system warning lamp
If the restraint system is disrupted, the high-
voltage on-board electrical system may not be
switched off in the event of an accident as inten-
ded.
GDANGER
If the restraint system is malfunctioning,
restraint system components may be trig-
gered unintentionally or may not deploy as
intended during an accident. This can affect
for example the Emergency Tensioning
Device or the air bag. Furthermore, in the
event of an accident, the vehicle's high-volt-
age electrical system may not be deactivated as intended. You may be electrocuted if you
touch the damaged components of the vehi-
cle's high-voltage electrical system. This
poses an increased risk of injury or even fatal
injury.
Have the restraint system checked and
repaired in a qualified specialist workshop assoon as possible. After an accident, switch off
the ignition immediately and remove the key
from the ignition lock.
A malfunction has occurred if the 6restraint
system warning lamp:
Rdoes not light up after the ignition is switched
on
Rdoes not go out after a few seconds while the
combustion engine or hybrid system is run-
ning
Rlights up again while the combustion engine
or hybrid system is running
12Occupant safety
Safety

iFrom a speed of 1 mph (2 km/h), the fuel
filler flap can no longer be opened.
iThe unlocking process for the fuel filler cap
may take up to 15 minutes.
:To open the fuel filler flap
;To insert the fuel filler cap
=Instruction label for fuel type to be refueled
?Tire pressure table
XPress the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings up.
XTurn the fuel filler cap counterclockwise and
remove it.
XInsert the fuel filler cap into the holder on the
inside of the fuel filler flap.
XCompletely insert the filler neck of the fuel
pump nozzle into the tank, hook in place and
refuel.
XOnly fill the tank until the pump nozzle
switches off.
Do not add any more fuel after the pump stops filling for the first time. Otherwise, fuel may
leak out.
Closing the fuel filler flap
XReplace the cap on the filler neck and turn
clockwise until it engages audibly.
XClose the fuel filler flap.
Close the fuel filler flap before locking the vehi-
cle.
If you drive at speeds above 1 mph (2 km/h)
with the fuel filler flap open, the Fuel Filler
Flap Openmessage is shown in the multifunc-
tion display.
If you are driving with the fuel filler cap open, the
8 reserve fuel warning lamp flashes. A mes-
sage appears on the multifunction display.
In addition, the ;Check Engine warning
lamp may light up.
Information on indicator and warning lamps in
the instrument cluster (see the vehicle Opera-
tor's Manual).
Problems with the fuel tank
ProblemPossible causes/consequences and MSolutions
The fuel filler flap cannot
be opened.The fuel filler flap is not unlocked.
XUnlock the vehicle (see the vehicle Operator's Manual).
XDepressurize the fuel tank (Ypage 27).
The SmartKey battery is discharged or nearly discharged.
XUnlock the vehicle using the mechanical key (see the vehicle Oper-
ator's Manual).
The fuel filler flap is unlocked, but the opening mechanism is jammed.
XConsult a qualified specialist workshop.
28Refueling
Driving and parking

If, after the charging process, the charging cable
is:
Rleft connected to the power socket, the cur-
rently selected values will be used for the nextcharging process.
Rremoved from the power socket, the values
will be reset to the minimum setting for the
next charging process. You may then need to reset the values of the maximum charge cur-
rent.
iIf the vehicle requires more time than usual
when charging, check the maximum charge
current settings using the controls on the
charging cable or in the on-board computer's
menu.
Indicator lamp on the vehicle socket
When the indicator lamp on the vehicle socket
lights up, this means the following:
Indicator
lamp
Flashes
orangeThe connection between the
vehicle and the current
source is being established
before charging begins.
Flashes
greenThe high-voltage battery is
being charged.
Flashes redA malfunction has occurred
while charging.
The indicator lamp goes out
after approximately
90 seconds.
Lights up
orangeA charging break for the high-
voltage battery is taking
place.
The indicator lamp goes out
after approximately
90 seconds.
Lights up
greenThe high-voltage battery is
fully charged.
The indicator lamp goes out
after approximately
90 seconds.
iIf the indicator lamp is off, lock or unlock the
vehicle. The indicator lamp then displays the
current status of the charging process again.
Connecting the charging cable
XShift the transmission to position P.
XSwitch the ignition off.
XPress the charge socket flap in the direction
of arrow:.
The charge socket flap swings up.
XPress fastener ;to the left.
Socket cap =is open.
XInsert the power supply plug into the electri-
cal outlet to the stop.
XInsert the charging cable connector into vehi-
cle socket ?to the stop.
Indicator lamp Afirst flashes orange and
then green.
The high-voltage battery is being charged.
If the charging cable is connected to the vehicle, you cannot start the engine or move the vehicle.
As soon as the charging process begins, you can
display the charging prediction on the Settings
on-board computer menu. The charging predic-
tion is either the anticipated condition of charge
at the programed departure time or the time
when the high-voltage battery will be fully
charged (
Ypage 44).
iDepending on the temperature, the fan and
battery cooling system may audibly switch on
during the charging process.
Charging the high-voltage battery33
Driving and parking
Z