Determining charge level (SOC), version 1
♦ Select “Special functions” tab.
♦ Retrieve charge level (SOC) under »Service work«.
Determining charge level (SOC), version 2
♦ Select option »Select own test«.
♦ Retrieve charge level (SOC) under »Service work«.
Determining charge level (SOC), version 3
♦ Select own test
♦ Diagnosis-compatible systems
♦ 0019 – Data bus diagnostic interface
♦ 0019 – Electrical components
♦ Select “Charge level”.
– If the charge level of the 12-V battery is <80 %, charge
the battery using an external battery charger ⇒ Electrical
system; Rep. gr. 27; Battery; Charging battery, or charge the
12-V battery via the high-voltage battery.
– If the charge level is ≥80 %, carry out battery check using
vehicle diagnostic tester.
Battery check, version 1:
♦ Select “Special functions” tab.
♦ Under »Service work«, select “Battery (battery check)”.
Battery check, version 2:
♦ Select option »Select own test«.
♦ Under »Service work«, select “Battery (battery check)”.
Battery check, version 3:
♦ Select own test
♦ Diagnosis-compatible systems
♦ 0019 – Data bus diagnostic interface
♦ 0019 – Electrical components
♦ A – Battery (battery check)
4.6 Status of battery (12V): reading - send‐
ing diagnosis protocol via online con‐
nection
Note
Applies only to vehicles with start/stop and energy recovery
system
Procedure
The battery status is read while the transportation mode is be‐
ing switched off ⇒ page 64 .
ID.4 2021 ➤
Maintenance - Edition 12.2020
24 4. Descriptions of work
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