battery VOLKSWAGEN E-GOLF 2019 Service Manual

NOTICE
The supplied charging cable for 110 Volt outlets should always be carried in the vehicle.
NOTICE
Always follow the manufacturer's information and instructions on using the charging station.
NOTICE
The supplied charging cable for 110 Volt outlets has been developed and approved for this vehicle. Do not use the charging cable to charge other vehicles. This applies in particular for vehicles that do not have DC residual current protection.
NOTICE
Always end the charging process before disconnecting the charging cable.
NOTICE
Always connect the charging cable directly to a 110 Volt outlet. Never use the charging cable together with an extension cable, a cable reel, a multiple socket outlet or an adapter such as a regional adapter or timer.
If the charging cable is connected to a 110 Volt outlet with other electrical consumers on the same electrical circuit, the fuse in the electrical circuit can be triggered. If this happens the high-voltage battery will not be charged. Switch off other consumers on the electrical circuit or choose another electrical circuit. If necessary, have the electrical installation checked by qualified experts.
Protect the control unit on the charging cable and the connector from heat, especially from sunlight, during charging.
If the vehicle is close to high-voltage cables during charging, charging may be restricted.
Charging with alternating current (AC charging)

NOTICE
Always follow the manufacturer's information and instructions on using the charging station.
Charging process indicator

Fig. 137 In the high-voltage battery charge port: Charging process indicator light 1 and information label 2

Fig. 138 Charging process information label

Charging pro-
cess indicator
light ⇒ fig. 137
(1)
Meaning Proper re-
sponse
(1) Lights up green
permanently.
High-voltage
battery charging
process has
been completed.
Disconnect the
charging con-
nector and close
the charging
socket flap.
(2) Flashes green
permanently.
High-voltage
battery is being
charged.
-
(3) Lights up yellow
briefly.
Charging cable
is connected and
has been detect-
ed by the vehi-
cle.
-
Lights up yellow
permanently.
The charging
cable is con-
nected but there
is no current.
Have the power
supply or the
outlet checked. If
necessary, seek
expert help.
OR: The vehicle
has automatical-
ly unlocked the
charging cable
connector.
Remove the
charging cable
connector.
(4) Flashes yellow. The selector
lever is not in
position P (Park).
Place the selec-
tor lever in posi-
tion P (Park)

Key to ⇒ fig. 138:
Charging pro-
cess indicator
light ⇒ fig. 137
(1)
Meaning Proper re-
sponse
(5) Lights up red. Charging cable
connector could
not be locked
properly in the
charging socket
of the vehicle.
Check whether
the charging
connector is
plugged in cor-
rectly. Pull out
the charging
cable connector
and insert it into
the charging
socket again.
Get expert assis-
tance if neces-
sary.
Flashes red. Error in charging
system. The
high-voltage
battery cannot
be charged.
Get expert assis-
tance.

Immediate charging

Fig. 139 In the high-voltage battery charge port: Immediate charging button 1.

WARNING
High voltage systems in the electric motor compartment can cause electrical shocks or even electrocution, severe burns, other serious injuries, and even death!
x Never short-circuit the electrical system. Be especially careful when using jumper cables. The vehicle's battery could explode!
x To reduce the risk of electrical shock and personal injury while the electric motor is acti-vated:
– Never touch ignition cables. Never touch other components of the high voltage elec-tronic ignition system.
– Never touch the wiring of the HID – High Intensity Discharge (Xenon) headlights.
x Read and heed the important information and warnings on cleaning the electric motor
compartment ⇒  Cleaning the electric motor compartment.
WARNING
Moving parts in the electric motor compartment can cause serious personal injury on con-tact.
x Never reach into the area around or touch the radiator fan. Contact with the blades can cause serious personal injury. Always remember that the radiator fan is temperature-controlled and can come on suddenly even when the electric motor has been switched off for a while and the key has been removed from the ignition.
x If you have to perform a check or repair when the electric motor is activated, there are more risks from the rotating parts, such as the drive belts, alternator, radiator fan, etc., and from the high-voltage ignition system. Always use extreme care.
– Always make sure that jewelry, loose clothing and long hair do not get caught in rotat-ing electric motor parts. Before starting any work remove your jewelry, take off your neck-tie, tie back and cover your hair, and do not wear clothing that can hang down and get caught in moving electric motor parts.
– Always use extreme caution if the accelerator pedal has to be depressed to perform a check. The vehicle will start to move even if the parking brake is on.
x Never leave any objects in the electric motor compartment, for example cleaning rags and tools. Objects left behind can cause malfunctions, electric motor damage, and even fires.
WARNING
Additional materials in the electric motor compartment such as blankets can interfere with the operation of the electric motor and can cause fires, which can lead to serious injuries.
x Never cover the electric motor with blankets or other materials.
WARNING
Operating fluids and some materials in the electric motor compartment can catch fire easily, causing burns and other serious personal injuries!
x Never smoke near the electric motor compartment.
x Never work next to open flames or sparks.
x Never pour or spill operating fluids or other flammable liquids on the electric motor. These fluids can ignite on hot electric motor parts and cause injuries.
x Always have a functional, approved fire extinguisher nearby.

12 Volt vehicle battery

WARNING
Working on the batteries or the electrical system in your vehicle can cause serious acid burns, fires, explosions, or electrical shocks. Always read and heed the following WARNINGS and safety precautions before working on the batteries or the electrical system.
x Before working on the electrical system, always switch off the ignition and all electrical consumers and disconnect the negative (-) cable from the standard 12 Volt battery.
x When you change a light bulb, always switch off the light first.
x Always keep children away from battery acid and vehicle batteries in general.
x Always wear eye protection. Never let battery acid or lead particles come into contact with your eyes, skin, or clothing.
x Sulfuric battery acid is very corrosive. It can burn unprotected skin and cause blindness. Always wear protective gloves and eye protection. To reduce your risk of injury, never tilt the batteries, as this could spill acid through the vents and burn you.
x If you get battery acid in your eyes or on your skin, immediately rinse with cold water for several minutes and then get immediate medical attention. If you swallow any battery acid, get medical attention immediately.
x When disconnecting the batteries from the vehicle electrical system, always disconnect the negative cable (-) first and then the positive cable (+).
x Always switch off all electrical consumers before reconnecting 12 Volt batteries. Recon-nect the plus cable (+) first and then the negative cable (-). Never reverse the polarity of the connections. This could cause a fire.
x A highly explosive mixture of gases is given off when the battery is being charged.
x Do not smoke and avoid fires, sparks, and open flames when working. Never create sparks or electrostatic charges when handling cables and electrical equipment. Never short circuit the battery terminals. High-energy sparks can cause serious personal injury.
x Never use or attempt to charge a damaged or frozen battery, or a battery that was frozen but has thawed. Charging a frozen or thawed battery could cause explosions and chemical burns! Replace damaged or frozen vehicle batteries immediately. A dead battery can freeze at temperatures around +32 °F (0 °C).
x If the battery has a vent line or tube, make sure that it is properly connected to the battery.
WARNING
California Proposition 65 Warning
x Battery posts, terminals, and related accessories contain lead and lead components, chemicals known to the State of California to cause cancer and reproductive harm. Wash your hands after handling.
NOTICE
x Do not expose the vehicle battery to direct sunlight for an extended period of time as ultra-violet rays may damage the battery housing.
x If the vehicle is left standing in the cold for a long time, protect the vehicle battery from freezing. A battery will be permanently damaged by freezing.
Emergency starting and starting the electric motor with a very weak vehicle battery or after the vehicle battery has been replaced may change or delete system settings (including time, date, per-sonal convenience settings, and programming). Check the settings and correct as necessary once the vehicle battery has built up a sufficient charge.

should always be replaced by a qualified technician, since the vehicle's onboard electrical system management has to be reset after replacing the battery. Only a qualified service facility is able to perform this necessary adjustment. Therefore, Volkswagen recommends to always have the 12 volt vehicle battery replaced by an authorized Volkswagen dealer or an authorized Volkswagen Service Facility.
Only use maintenance-free vehicle batteries meeting standards TL 825 06 and VW 7 50 73. These standards must date from July 2012 or later.
Disconnecting the 12 Volt vehicle battery
If the battery must be disconnected from the vehicle's electrical system, note the following:
x Switch off all electrical systems and devices and the ignition.
x Unlock the vehicle before disconnecting the battery; otherwise the alarm system will go off.
x First disconnect the negative cable (-) and then the positive cable (+) ⇒ .
Connecting the 12 volt vehicle battery
x Prior to reconnecting the battery, switch off all electrical systems and devices and the ignition.
x Connect the positive cable (+) first and then the negative cable (-) ⇒ .
After the battery is connected and the ignition is switched on, different indicator lights may light up. They should go out after you drive a short distance at 10–12 mph (15–20 km/h). If the indicator lights do not go out, contact an authorized Volkswagen dealer or an authorized Volkswagen Service Facility and have the vehicle checked.
If the battery was disconnected for a long time, the next scheduled service may not be correctly calcu-
lated and displayed ⇒  Instrument cluster. The maximum permissible service and maintenance inter-
vals are shown in the ⇒ Booklet Warranty and Maintenance.
Vehicles with Keyless Access
If the ignition will not start after reconnecting the vehicle battery, lock the vehicle from the outside and
unlock it again ⇒  Unlocking or locking the vehicle with Keyless Access. Then try to start the ignition again. If the ignition cannot be switched on, contact an authorized Volkswagen dealer, an authorized Volkswagen Service Facility, or another qualified workshop for assistance.
Automatic electrical load deactivation
If the vehicle battery drain is high, the intelligent onboard electrical system management automatically takes steps to help prevent battery drain.
x The idle speed is increased so that the alternator provides more power.
x The power to devices that consume a lot of electricity is cut back or switched off completely.
The onboard electrical system management cannot always keep the battery from being drained. For example, the battery will drain if the electric motor is not activated, but the ignition is switched on or the parking lights are left on for a long time when parked.
What drains the vehicle battery?
x Long periods when the electric motor is not activated, especially when the ignition is on.
x Using electrical systems or devices when the electric motor is switched off.
x Leaving the vehicle unlocked for several days when not in use.
x The selector lever is left for a long period of time in any position other than Park (P) when the
ignition is switched off ⇒  Selector lever.

WARNING
Failure to use the proper battery with proper mounting and connections may cause short circuits, fires, and serious personal injuries.
x Always use only maintenance-free or cycle-free, leak-proof batteries with the same speci-fications and dimensions as the original equipment battery. Specifications are listed on the battery housing.
WARNING
When the vehicle battery is charged, it produces highly explosive hydrogen gas.
x Charge vehicle batteries only in well-ventilated areas.
x Never charge a frozen or thawed battery. A dead battery can freeze at temperatures around +32 °F (0 °C).
x You must replace the vehicle battery if it was frozen.
x Incorrectly connected cables can cause a short-circuit. First connect the positive cable (+) and then the negative cable (-).
NOTICE
x Never disconnect the vehicle battery or connect 2 vehicle batteries to each other when the ignition is switched on or the electric motor is activated. Doing this may damage the electrical system or electronic components.
x Never use a vehicle battery that does not meet the specifications for the vehicle battery for your vehicle. Using the wrong battery can damage the electrical system or electronic compo-nents and cause electrical malfunctions.
x Never connect power generating equipment, such as a solar panel or battery charger, to the 12 Volt socket in order to charge the vehicle battery. This can damage the vehicle's electrical system.
Dispose of the vehicle battery according to regulations. Vehicle batteries contain poisonous substances such as sulfuric acid and lead.
Battery acid can pollute the environment. Catch leaking operating fluids and dispose of them properly.