battery VOLKSWAGEN E GOLF 2015 5G / 7.G Owner's Guide

Charging the high-voltage battery

NOTICE
Failure to heed warning lights or text WARNINGS can result in vehicle damage.
General information on charging the high-voltage battery

Fig. 134 On the rear right of the vehicle: High-voltage battery charge port. A: With cover on lower part (for AC charging only). B: Completely open socket for DC charging.

Charging at J1772 public AC charging stations or with the Wallbox (AC charging)
Charging the high-voltage battery at an AC charging station or with the Wallbox: The high-voltage battery is charged at a rate of up to 7.2 kW. The charging process for a completely discharged high-voltage battery lasts about 4 hours.
The charging connector has to be connected to the upper part of the charging socket (3). Leave the lower part covered.
The Wallbox is available as an accessory. An authorized Volkswagen dealer can provide you with information on the Wallbox.
Make sure that the Wallbox is installed by a qualified expert and that your house’s electrical system is also checked before installation.
It is not possible to feed energy back into the power grid.
Supplementary charging cable
Connect the charging connector on the supplied charging cable to a properly functioning 110 Volt Ground Fault Circuit (GFI) outlet with a 15 amp fuse. The outlet must be properly protected from
water, moisture, and other fluids ⇒ 
Charging for the first time and charging after long standing periods
If the high-voltage battery is charged for the first time or charged after the vehicle has been standing for a long period, it is possible that the maximum charging level of the high-voltage battery cannot be reached. This is for technical reasons and does not necessarily mean a vehicle malfunction. If the maximum charge level is not reached even after several charging procedures, have the high-voltage battery checked by an authorized Volkswagen dealer or authorized Volkswagen service facility.
If the vehicle is not used for a long period, the high-voltage battery must be charged after 4 months at
the latest ⇒ .
WARNING
If you are not familiar with the socket or the electrical installation or it has not been checked by qualified experts, never use it for charging. Even very low charging currents can cause serious damage and in particular fires if the socket or electrical installation is in bad condi-tion. If necessary, get expert assistance from a qualified electrical installation specialist.
NOTICE
Frequently charging the vehicle with a high charging power, particularly with a direct current (DC charging), can lead to a permanent reduction of the charging capacity of the high-voltage battery. If possible, charge the vehicle with low charging power, like with a home-charging station or with the supplementary charging cable.
NOTICE
Not using the vehicle for long periods can cause damage to the high-voltage battery. Charge the high-voltage battery after 4 months at the latest.
The vehicle can be charged on charging stations that comply with the J1772 standard.

Preparing to charge the high-voltage battery

Control module display ⇒ fig. 136:
No. Display Meaning Proper re-
sponse
(5) Flashes
is connected to
the vehicle.
High-voltage
battery is being
charged.
(1) (4)
Flashes
The charging
cable is con-
nected to an
outlet without a
Ground Fault
Circuit (GFI).
The high-voltage
battery is not
being charged.
Connect charg-
ing cable to a
110 Volt outlet
with a Ground
Fault Circuit
(GFI).
Lights up
Charging cable
is connected to a
110 Volt outlet,
but an error was
detected by the
control module.
The high-voltage
battery is not
being charged.
Disconnect the
charging cable
from the 110 Volt
outlet and plug it
back in. If the
error comes
back again, get
expert assis-
tance from a
qualified electri-
cal installation
specialist.

Control module display ⇒ fig. 136:
No. Display Meaning Proper re-
sponse
(1) (2) (4) Lights up
During the
charging pro-
cess: The con-
trol unit detected
a residual cur-
rent, the charg-
ing process is
interrupted.
Dangerous con-
tact voltage
damaged isola-
tion detected at
the voltage
source. High-
voltage battery is
not being
charged.
Or: Damaged
isolation detect-
ed in the vehi-
cle’s high-
voltage system.
Get expert assis-
tance from a
qualified electri-
cal installation
specialist.
During the test-
ing of the
Ground Fault
Circuit (GFI):
The test button
(3) was pressed
for longer than 3
seconds. The
high-voltage
battery is not
being charged.
Press the reset
button (6) for at
least 3 seconds.
(1) (2) Flashes Charging cable Have charging

Control module display ⇒ fig. 136:
No. Display Meaning Proper re-
sponse
(4) Lights up
is connected to a
110 Volt outlet,
but an error was
detected by the
control module.
The high-voltage
battery is not
being charged.
cable checked
by a qualified
electrical special-
ist. Go to an
authorized
Volkswagen
dealer or
Volkswagen
service facility for
assistance.
(2) (4) Lights up
The vehicle’s
system detected
an error in the
connected
charging cable.
The high-voltage
battery is not
being charged.
Disconnect the
charging cable
from the 110 Volt
outlet and the
vehicle and plug
it back in. Should
the error occur
again, get expert
assistance from
a qualified elec-
trical installation
specialist.
(1) (2) Lights up An overheating - Let the charg-

Control module display ⇒ fig. 136:
No. Display Meaning Proper re-
sponse
(4) Flashes
of the charging
cable was de-
tected. The high-
voltage battery is
not being
charged. An
overheating can
be caused by:
- A damaged 110
Volt outlet
- Ambient tem-
perature above
113 °F (45 °C)
- A damaged
charging cable
ing cable cool
down.
- Should the
error occur
again, have
charging cable
checked by a
qualified electri-
cal specialist. Go
to an authorized
Volkswagen
dealer or
Volkswagen
service facility for
assistance.
(1) Lights up
The system de-
tected fluctua-
tions in the volt-
age. The high-
voltage battery is
not being
charged
- The charging
process will con-
tinue automati-
cally once the
voltage is stable
again.
- If necessary try
connecting the
cable to another
110 Volt outlet.
- Should the
error occur
again, get expert
assistance from
a qualified elec-
trical installation
specialist.
(4) Flashes
(2) Flashes Excess voltage - Disconnect the

Control module display ⇒ fig. 136:
No. Display Meaning Proper re-
sponse
(4) Lights up
was detected by
the control unit.
The high-voltage
battery is not
being charged.
charging cable
from the 110 Volt
outlet and the
vehicle and plug
it back in.
- If necessary try
connecting the
cable to another
110 Volt outlet.
- Should the
error occur
again, have
charging cable
checked by a
qualified electri-
cal specialist. Go
to an authorized
Volkswagen
dealer or
Volkswagen
service facility for
assistance.

Enabling the charging process
After a successful self-test, press the button (1) to set the protection unit to ready and enable the charging process. The LED in the protection unit symbol (2) lights up green.
Ending the charging process
If you want to interrupt the high-voltage battery charging process before charging is completed, the charging process must be interrupted or ended on the vehicle
Checking the Ground Fault Circuit (GFI) of the 110 Volt outlet
The GFI should be checked once a month. Carry out this procedure with the charging cable connected to the 110 Volt outlet and the vehicle. The charging process has to be deactivated:
x Press the test button (3) on the control unit of the charging cable for at about 3 seconds.
x If the test was successful, the warning lights (1) and (2) will light up. Should these warning lights not light up or other lights should light up or flash, an error occurred while testing.
x After a successful test and if error occurred, you can start the charging process by pressing the rest button (6) for at least 3 seconds.

Temperature monitoring
During the charging process the charging cable can become slightly warmer. This is normal and no cause for concern
If the control unit or the charging cable becomes too hot, the charging current will automatically be reduced If the control unit or the charging cable continues to get hot even at the lowest charging current, the protection unit will be switched off, and will remain switched off until it has cooled down sufficiently.
If no other sources of heat, such as direct sunlight, can be identified as relevant, have the outlet checked by properly qualified and trained experts.
Charging cable for charging at charging stations (if equipped)
Keep the charging cable for charging at a charging station safely in its bag in the luggage compart-ment. Follow the operating manual for the charging station. Before using the charging cable, read the procedure for charging with alternating current
WARNING
Charging the high-voltage battery improperly, using improper or damaged outlets and charg-ing cables, improper handling of the high-voltage battery or failure to follow safe charging procedures can cause short circuits, electric shock, explosions, fire, burns, injuries and death.
x Always connect the charging cable to a properly functioning 110 Volt Ground Fault Circuit (GFI) wall outlet. The outlet must be properly protected from water, moisture and other fluids.
x Always check the fuse protection of the GFI outlet before connecting the charging cable.
x Never connect the charging cable to a conventional power outlet, regardless of whether the outlet is protected or not.
x Never use the charging cable with an extension cord of any kind.
x Never let plugs or connectors come into contact with water, moisture, or any other fluids.
x Never use any charging cable if it is damaged and never use the charging cable with a damaged GFI outlet.
x Never attempt to alter or repair cables or other electrical components.
x Never let anybody stay in the vehicle while the high-voltage battery is charging.
x Never do any kind of work on the outside or inside of the vehicle while the high-voltage battery is charging.
x Always disconnect the charging cable completely from the vehicle before starting the motor.
WARNING
If you are not familiar with the outlet or the electrical installation or it has not been checked by qualified experts, never use it for charging. Even very low charging currents can cause serious damage and in particular fires if the socket or electrical installation is in bad condi-tion. If necessary, get expert assistance from a qualified electrical installation specialist.
WARNING
If a 110 Volt outlet is being used for charging, never charge 2 or more vehicles on outlets of the same fuse at the same time. Use a different fuse circuit for charging another vehicle. Al-ways comply with the maximum load for the fuse circuit used. If necessary, get expert assis-tance.