ID.4 2021 ➤
Electrical system - Edition 02.2021
2.4
Removing and installing battery tray
Removing
– Remove battery -A- ⇒ Rep. gr. 27; Removing and installing
battery A.
– Unscrew bolts -2-.
– Remove cable tie from battery tray -1-.
– Remove battery tray -1-.
Installing
Install in reverse order of removal, observing the following:
Tightening torques
♦ ⇒ Rep. gr. 27; Assembly overview – battery
2.5
Checking battery A
2.5.1
Sequence for checking battery A
– ⇒ c2.5.3 olour indicator of battery A”, page 11
– ⇒ b2.5.4 attery A with battery tester”, page 12
2.5.2
Visual inspection of battery A
WARNING
Risk of highly caustic battery acid.
– Keep suitable counteragent ready, e.g. soapy water.
WARNING
Leaking battery acid.
Risk of burns to the body and corrosion of the vehicle.
– Wear protective gloves, protective clothing and safety gog‐
gles.
– Battery must not be tilted.
– Neutralise sulphuric acid as soon as possible.
10
Rep. gr.27 - Starter, current supply, CCS
ID.4 2021 ➤
Electrical system - Edition 02.2021
WARNING
Escaping oxyhydrogen gas when charging and due to subse‐
quent degassing.
Danger of explosion
– Avoid sparking.
– Avoid short circuits.
– No open flames.
– No smoking.
– No open light.
– Dissipate any static charge by briefly touching door striker
pin.
– Only work on batteries in well ventilated rooms.
– Make sure that the bleeder hole is on the correct side.
– Perform visual inspection of battery housing for damage.
CAUTION
Danger of fire on electrical wires
– Fit the battery clamps correctly on the battery terminals,
and tighten them to the specified torque.
– Perform visual inspection of battery terminals for damage.
– Perform visual inspection of whether the hose for central gas
venting system and the sealing plug are fitted correctly.
2.5.3
Check colour indicator of battery A
WARNING
Danger of explosion when checking and charging battery or
when using it for jump starting.
– Do not test or charge batteries whose “ALI (Acid Level In‐
dicator)” is colourless/light yellow. Do not slave/jump start
the vehicle.
Note
The colour indicator shows the electrolyte level in the battery.
Note
Since the colour indicator is only located in one battery cell, the
indicator also only applies to this battery cell. An exact determi‐
nation of the battery condition is only possible through a battery
test ⇒ b2.5.4 attery A with battery tester”, page 12 .
– Before the visual inspection, tap the “ALI (Acid Level Indica‐
tor” lightly and carefully using the handle of a screwdriver.
The air bubbles, which can influence the display, will dissi‐
pate when doing this. The colour display of the “ALI (Acid
Level Indicator)” will now be more accurate.
– “ALI (Acid Level Indicator)” visual inspection
•
•
Do not use flashlights.
Look at the electrolyte level indicator vertically from above.
Three different colour displays are possible:
Black = electrolyte level is OK.
•
2. Battery
11
ID.4 2021 ➤
Electrical system - Edition 02.2021
•
Light yellow = electrolyte level is too low. Battery must be
renewed.
2.5.4
Checking battery A with battery tester
Special tools and workshop equipment required
♦ battery tester -VAS 6161-
WARNING
Escaping oxyhydrogen gas when charging and due to subse‐
quent degassing.
Danger of explosion
– Avoid sparking.
– Avoid short circuits.
– No open flames.
– No smoking.
– No open light.
– Dissipate any static charge by briefly touching door striker
pin.
– Only work on batteries in well ventilated rooms.
– Make sure that the bleeder hole is on the correct side.
– Switch off ignition and electrical consumers.
– Keep vehicle key and other entry and start authorisation
equipment (e.g. smartphone) outside vehicle.
Vehicles with colour indicator
– ⇒ c2.5.3 olour indicator of battery A”, page 11
All vehicles (continued)
WARNING
Danger of explosion when checking and charging battery or
when using it for jump starting.
– Do not test or charge batteries whose “ALI (Acid Level In‐
dicator)” is colourless/light yellow. Do not slave/jump start
the vehicle.
– Switch on battery tester -VAS 6161-.
– Ensure that the test terminals make good contact.
– Connect red terminal “+” of tester to positive terminal.
– Connect black terminal “-” of tester to negative terminal.
Select one of the following tests:
– Genuine Volkswagen battery test (for all genuine VW batter‐
– “Non”-Volkswagen battery test (for all batteries from third-
party manufacturers): ⇒ page 13 .
Genuine Volkswagen battery test
Observe operating manual of battery tester -VAS 6161-.
12
Rep. gr.27 - Starter, current supply, CCS
ID.4 2021 ➤
Electrical system - Edition 02.2021
WARNING
Danger of explosion when checking and charging battery or
when using it for jump starting.
– Do not test or charge batteries whose “ALI (Acid Level In‐
dicator)” is colourless/light yellow. Do not slave/jump start
the vehicle.
– Select “Genuine Volkswagen battery test” in the menu.
– Select “In vehicle” or “Outside vehicle”.
– Select “On battery terminal” or “On jump-start point”.
– Scan in 2D code of battery or manually select battery type
and amperage.
– Measure temperature. Hold temperature sensor about 5 cm
above one battery terminal until temperature stabilises.
– Start test.
– Print test report.
“Non”-VW battery test
Observe operating manual of battery tester -VAS 6161-.
WARNING
Danger of explosion when checking and charging battery or
when using it for jump starting.
– Do not test or charge batteries whose “ALI (Acid Level In‐
dicator)” is colourless/light yellow. Do not slave/jump start
the vehicle.
– Select “Non-Volkswagen battery test” in the menu.
– Select “On battery terminal” or “On jump-start connection”.
– Select battery type “Normal”, “AGM”, “2*6V” or “Gel”.
– Select “CCA”, “JIS”, “DIN”, “SAE”, “IEC” or “EN” standard.
– Select battery value.
– Measure temperature. Hold temperature sensor about 5 cm
above one battery terminal until temperature stabilises.
– Start test.
– Print test report.
Evaluating battery test results
– Evaluating battery test results for guarantee and service
tests
Battery test result
Battery OK
Measure
No measure
Battery OK - re‐
⇒ Rep. gr. 27; Charging battery A
charge
Perform current draw ⇒ d2.5.5 raw test”, page 14
test
Renew battery
Disconnect battery and repeat test. The
result “Renew battery” may be caused
by a weak contact of the electrical wire.
Battery cell defective Renew battery
- renew
2. Battery
13
ID.4 2021 ➤
Electrical system - Edition 02.2021
Battery test result
Measure
Check connection
Connect battery tester -VAS 6161- di‐
rectly to the battery and not to the jump-
start connection
Battery dead
Renew battery
– Evaluating battery test results for maintenance test.
Battery test result Measure
Battery OK
No measure
Charge battery im‐ ⇒ Rep. gr. 27; Charging battery A
mediately
Mark as defective Renew battery, and mark it as defective
Check tester con‐ Disconnect battery and repeat test. The
nection
result “Check tester connection” may be
caused by a weak contact of the electrical
wire.
Check connection Connect battery tester -VAS 6161- direct‐
ly to the battery and not to the jump-start
connection
Noises
Wait until the measured value is shown
on the display of the battery tester -VAS
6161-
Battery dead
Renew battery
2.5.5
Current draw test
WARNING
Risk of highly caustic battery acid.
– Keep suitable counteragent ready, e.g. soapy water.
WARNING
Leaking battery acid.
Risk of burns to the body and corrosion of the vehicle.
– Wear protective gloves, protective clothing and safety gog‐
gles.
– Battery must not be tilted.
– Neutralise sulphuric acid as soon as possible.
WARNING
Escaping oxyhydrogen gas when charging and due to subse‐
quent degassing.
Danger of explosion
– Avoid sparking.
– Avoid short circuits.
– No open flames.
– No smoking.
– No open light.
– Dissipate any static charge by briefly touching door striker
pin.
– Only work on batteries in well ventilated rooms.
– Make sure that the bleeder hole is on the correct side.
14
Rep. gr.27 - Starter, current supply, CCS
ID.4 2021 ➤
Electrical system - Edition 02.2021
WARNING
Danger of explosion when checking and charging battery or
when using it for jump starting.
– Do not test or charge batteries whose “ALI (Acid Level In‐
dicator)” is colourless/light yellow. Do not slave/jump start
the vehicle.
The battery -A- will henceforth be referred to as “battery”.
•
Make sure to set the correct charging mode on the battery
charger so that the current draw test is not falsified ⇒ Rep.
gr. 27; Charging battery A.
The current draw of the battery allows for conclusions on wheth‐
er the battery must be renewed or charged.
Prerequisites for testing:
♦ The result of the battery test must be “Perform current draw
test”.
♦ When charging the battery, its temperature must be at least
≥ +10°C.
♦ The battery charger must be able to deliver a charge current
of at least 30 A.
Removing
– ⇒ Rep. gr. 27; Charging battery A
Note
Depending on the battery charger, the current draw of the bat‐
tery must be measured with a clamp-on current probe, or the
battery charger displays the current draw on the device.
– Measure charge current of battery after 5 minutes.
If the current draw exceeds 10 % of the rated capacity of the
battery in Ah, ⇒ Rep. gr. 27; charge battery A.
If the current draw is below 10 % of the rated capacity of the
battery in Ah, renew battery.
– After allowing battery to rest for two hours, perform a ⇒
b2.5.4 attery A with battery tester”, page 12 .
Renew battery if one of the following is displayed after charg‐
ing: “Battery defective”, “Perform current draw test” or “OK –
recharge”.
2. Battery
15
ID.4 2021 ➤
Electrical system - Edition 02.2021
2.6
Charging battery A
WARNING
Escaping oxyhydrogen gas when charging and due to subse‐
quent degassing.
Danger of explosion
– Avoid sparking.
– Avoid short circuits.
– No open flames.
– No smoking.
– No open light.
– Dissipate any static charge by briefly touching door striker
pin.
– Only work on batteries in well ventilated rooms.
– Make sure that the bleeder hole is on the correct side.
NOTICE
Risk of damage to battery -A-
– Charge battery -A-. The no-load voltage must not be less
than 11.6 V.
The battery monitor control unit -J367- will henceforth be refer‐
red to as “battery monitor control unit”.
The battery -A- will henceforth be referred to as “battery”.
A battery is designated totally discharged when the no-load
voltage is less than 11.6 V.
•
The battery must have a temperature of at least 10 °C.
– Switch off ignition and electrical consumers.
– Keep vehicle key and other entry and start authorisation
equipment (e.g. smartphone) outside vehicle.
WARNING
Danger of explosion when checking and charging battery or
when using it for jump starting.
– Do not test or charge batteries whose “ALI (Acid Level In‐
dicator)” is colourless/light yellow. Do not slave/jump start
the vehicle.
– Switch on battery charger.
– Select charging mode.
– Connect red charger terminal “+” to positive battery terminal.
– Connect black charger terminal “-” to vehicle earth.
Ending battery charging process
– Switch off battery charger.
– Disconnect black terminal “-” of battery charger.
– Disconnect red terminal “+” of battery charger.
16
Rep. gr.27 - Starter, current supply, CCS
2024 VW ID.4 Owner's Manual
