ID.4 2021 ➤, ID.3 2020 ➤
Electric rear-wheel drive EIP220 and all-wheel drive EIA200, EIP220 - Edition 11.2021
5.20
Removing and installing switching unit
for high-voltage battery, positive termi‐
nal [SX8], 48, 55, 62 kWh
5.20.1
Removing and installing switching unit
for high-voltage battery, positive termi‐
nal [SX8]
DANGER
Danger to life from high voltage.
Electric shocks or arcs may lead to serious injuries or death.
– Suitable personal protective equipment (PPE) must be
worn for the subsequent work steps.
– The subsequent work steps must be supervised by an
additional specialist with appropriate qualification.
– Outside the hazard area, the additional authorised special‐
ist can support the HVE as required within the scope of his
or her qualification.
Put on the required protective equipment for the subsequent
work steps:
♦ Arc flash resistant clothing (at least APC 2, at least 318 kJ)
♦ Helmet with arc flash resistant visor (at least APC 2, at least
318 kJ)
♦ Arc flash resistant gloves with nitrile glove liners (at least
APC 2, at least 318 kJ), insulating up to at least 500 V
♦ Safety shoes with ESD protection
The switching unit for high-voltage battery, negative terminal
-SX7- will henceforth be referred to as “switching unit, negative
terminal”.
The switching unit for high-voltage battery, positive terminal
-SX8- will henceforth be referred to as “switching unit, positive
terminal”.
Important
•
The switching unit, negative terminal and switching unit, pos‐
itive terminal must be renewed together.
Removing
– ⇒ Rep. gr. 93; Opening high-voltage battery 1 [AX2].
– ⇒ Rep. gr. 93; Opening electrical circuit, 48, 55 kWh.
– ⇒ Rep. gr. 93; Removing and installing connecting element,
48, 55 kWh.
– Detach cap for switching unit, positive terminal -1-.
196
Rep. gr.93 - Electric drive systems
ID.4 2021 ➤, ID.3 2020 ➤
Electric rear-wheel drive EIP220 and all-wheel drive EIA200, EIP220 - Edition 11.2021
– Unscrew bolts -5-.
– Remove carrier plate -6-.
– Unscrew bolts -2-.
– Disconnect electrical connectors -3- and -4-, and move elec‐
trical wire to one side.
– Remove battery regulation control unit -J840- -1-.
– Unscrew bolts -2-.
– Remove switching unit, positive terminal -1-.
Installing
Install in reverse order of removal, observing the following:
– Renew insulation between the lower part of battery housing
and the switching unit, positive terminal.
Tightening torques
♦ ⇒ Rep. gr. 93; Assembly overview – switching unit for high-
voltage battery, 48, 55, 62 kWh
5. High-voltage battery components
197
ID.4 2021 ➤, ID.3 2020 ➤
Electric rear-wheel drive EIP220 and all-wheel drive EIA200, EIP220 - Edition 11.2021
♦ ⇒ Rep. gr. 93; Assembly overview – high-voltage battery,
connecting element, 48, 55, 62 kWh
5.21
Removing and installing switching unit
for high-voltage battery, positive termi‐
nal [SX8], 82 kWh
5.21.1
Removing and installing switching unit
for high-voltage battery, positive termi‐
nal [SX8]
DANGER
Danger to life from high voltage.
Electric shocks or arcs may lead to serious injuries or death.
– Suitable personal protective equipment (PPE) must be
worn for the subsequent work steps.
– The subsequent work steps must be supervised by an
additional specialist with appropriate qualification.
– Outside the hazard area, the additional authorised special‐
ist can support the HVE as required within the scope of his
or her qualification.
Put on the required protective equipment for the subsequent
work steps:
♦ Arc flash resistant clothing (at least APC 2, at least 318 kJ)
♦ Helmet with arc flash resistant visor (at least APC 2, at least
318 kJ)
♦ Arc flash resistant gloves with nitrile glove liners (at least
APC 2, at least 318 kJ), insulating up to at least 500 V
♦ Safety shoes with ESD protection
The switching unit for high-voltage battery, negative terminal
-SX7- will henceforth be referred to as “switching unit, negative
terminal”.
The switching unit for high-voltage battery, positive terminal
-SX8- will henceforth be referred to as “switching unit, positive
terminal”.
Important
•
The switching unit, negative terminal and switching unit, pos‐
itive terminal must be renewed together.
Removing
– ⇒ Rep. gr. 93; Opening high-voltage battery 1 [AX2].
– ⇒ Rep. gr. 93; Opening electrical circuit, 48, 55 kWh.
– ⇒ Rep. gr. 93; Removing and installing connecting element,
48, 55 kWh.
– Disconnect electrical connectors -1-, -3- and -6-, and move
electrical wires -2- and -4- to one side.
198
Rep. gr.93 - Electric drive systems
2024 VW ID.4 Owner's Manual
