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4

3.3

Note the status of the Plug & Charge setting in
the options menu.⇒ Display and control panel
for "Plug & Charge"

3.4

Read out and note any charging profiles or
timers set by the customer.

Read the warning notices.

⇒ Workshop Manual '2X00IN General warning notes

for working on the high-voltage system'
5

Isolate the high-voltage system from the power supply.

⇒ Workshop Manual '2X00IN Isolating high-voltage

system from power supply/Starting high-voltage
system'
6
7

Display and control panel for "Plug & Charge"

Complete the documentation.
⇒ Workshop Manual '2X00IN Test log: Verifying absence of electric charge'
Remove the luggage compartment tray.

⇒ Workshop Manual '501919 Removing and installing luggage compartment tray'

8

Drain coolant.
⇒ Workshop Manual '193817 Draining and filling coolant'

9

Unscrew reservoir at the partition, remove it and set it down by moving it forward into the luggage
compartment.
⇒ Workshop Manual '194019 Removing and reinstalling reservoir'

10 Loosen the electric passenger compartment heater from the partition and pull it forward.
⇒ Workshop Manual '828019 Removing and installing electric passenger compartment heater'
11 Loosen the fuse box at the front end from the partition and pull it forward.
⇒ Workshop Manual '978409 Loosening and securing front end fuse box'

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Service

Technical Information

240/24 ENU

2797

2

Removing 22-kW high-voltage charger (OBC)
Work Procedure: 1

Þ Disconnecting
Release high-voltage lines ⇒
Þ Disconnecting
high-voltage lines -1- and ⇒
Þ Disconnecting high-voltage
high-voltage lines -2-⇒
lines -Arrows A- and disconnect them from the
high-voltage charger.

Disconnecting high-voltage lines
2

Þ
Unscrew nuts for high-voltage charger holders⇒
Fastening nuts on holder -1-.

Fastening nuts on holder
3

Þ
Unscrew screw for equipotential bonding line⇒
Equipotential bonding line -1-.

Equipotential bonding line

AfterSales

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4

Lift up the high-voltage charger and clamp the two
Þ Coolant lines -1coolant lines with a hose clamp ⇒
respectively.

Information
Before installing or removing the coolant lines, place
absorbent material (paper, cloths) underneath to absorb
any emerging coolant. Coolant must never get onto electric
contacts.
Coolant lines
5

Set the high-voltage charger down by moving it
forward, release the connections for the coolant
Þ Coolant lines -Arrows- and
lines by pressing them ⇒
disconnect them from the high-voltage charger.
5.1

6

Close off the high-voltage charger immdiately
using suitable stoppers and set it down with
the coolant ports facing upwards.

Guide the previous high-voltage charger out of the
vehicle.
Coolant lines

Replacing 22 kW charging socket with 11 kW charging socket
Work Procedure: 1

2

Replace previous 22-kW charging sockets with 11-kW charging sockets.
⇒ Workshop Manual '279619 Removing and installing left charging socket'
and / or
⇒ Workshop Manual '279619 Removing and installing right charging socket'
This further depends on the respective vehicle equipment:
•

Vehicles with rear drive (M-No. 1X2) ⇒ Technical Information '279619 Install 11 kW high-voltage
charger (2WD - M-no. 1X2)'

or
•

Apr 2, 2026
Page 8 of 17

Vehicles with all-wheel drive (M-No. 1x1) ⇒ Technical Information '279619 Install 11 kW
high-voltage charger (4WD - M-No. 1X1)'

AfterSales

Service

Technical Information

240/24 ENU

2797

2

Install 11 kW high-voltage charger (2WD - M-No. 1X2)
Work Procedure: 1

1
2
3
4

Þ Convert bracket
Convert bracket holder at the bottom of the vehicle from the previous left position ⇒
Þ Convert bracket holder at bottom (2WD) -2-⇒
Þ
holder at bottom (2WD) -1- to the new, right position⇒
Convert bracket holder at bottom (2WD) -Arrow-.

Convert bracket holder at bottom (2WD)
– Previous holder position for 22-kW high-voltage charger
– New holder position for 11-kW high-voltage charger
– Fastening screws for lower bracket holder (shown at new holder position)
– Fastening nut for lower bracket holder (shown at new holder position)
1.1

Þ Convert bracket holder at bottom (2WD) -1-, by
Remove lower bracket holder at position ⇒
Þ Convert bracket holder at bottom (2WD) -3- and nuts ⇒
Þ Convert bracket
unscrewing screws ⇒
holder at bottom (2WD) -4-.

1.2

Þ Convert bracket holder at bottom (2WD) -1Move lower bracket holder from the left position ⇒
Þ Convert bracket holder at bottom (2WD) -2-.
to the right position ⇒

1.3

Þ Convert bracket holder at bottom (2WD) -3- and new nuts ⇒
Þ
Install and tighten new screws ⇒
Þ Convert bracket holder at bottom (2WD) -4Convert bracket holder at bottom (2WD) -2- on ⇒
the newly positioned lower bracket holder.
Tightening torque 8 Nm (5.9 ftlb.)

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2

Þ Convert
Convert previous plug-side holder ⇒
high-voltage charger holder -1- from previous 22-kW
high-voltage charger to new 11-kW high-voltage
charger.
2.1

Þ Convert high-voltage
Thread-off screws ⇒
charger holder -2-.

Convert high-voltage charger holder
2.2

Þ Convert high-voltage
Remove holder ⇒
charger holder -1- and position on new 11-kW
high-voltage charger ⇒ Install high-voltage
charger holder.

2.3

Þ Install
Screw-in and tighten new screws ⇒
high-voltage charger holder -2-.
Tightening torque 8 Nm (5.9 ftlb.)

Install high-voltage charger holder
3

Þ New
Fasten new high-voltage charger holder ⇒
high-voltage charger holder -1- to the new 11-kW
high-voltage charger.
3.1

Position new high-voltage charger holder
Þ New high-voltage charger holder -1- on
⇒
Þ New
new 11-kW high-voltage charger ⇒
high-voltage charger holder -1-.

3.2

Þ New
Screw-in and tighten new screws ⇒
high-voltage charger holder -2-.
Tightening torque 8 Nm (5.9 ftlb.)
New high-voltage charger holder

Apr 2, 2026
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Technical Information

240/24 ENU

4

Position and lock coolant lines on new high-voltage
charger, then remove previously installed hose clamps.
⇒ Lock coolant lines

5

Position high-voltage charger at mounting points and
attach and tighten new nuts for high-voltage charger
Þ Fastening nuts -1-.
holders ⇒

2797

2

Lock coolant lines
Tightening torque 8 Nm (5.9 ftlb.)
6

Þ Ground line -1- for equipotential
Screw-in screw ⇒
bonding line and tighten.

Fastening nuts
Tightening torque 8 Nm (5.9 ftlb.)
7

Position fuse box for front end at the partition and
tighten to specification.
⇒ Workshop Manual '978409 Loosening and securing
front end fuse box'

8

Position electric passenger compartment heater at the
partition and tighten to specification.
⇒ Workshop Manual '828019 Removing and installing
electric passenger compartment heater'

9

Position coolant expansion tank at the partition
andtighten to specification.
⇒ Workshop Manual '194019 Removing and reinstalling reservoir'

Ground line

10 Then continue with:
⇒ Technical Information '194019 Follow-up actions'

AfterSales

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Service

Technical Information

ENU 240/24

2797

Install 11 kW high-voltage charger (AWD - M-No. 1X1)
Information
All-wheel drive vehicles (M-No. 1x1) on which a 22 kW high-voltage charger has been retrofitted in the past
have an additional console holder installed at the bottom.
The studs for mounting the 11 kW high-voltage charger were removed as part of the conversion for this
bracket. This holder remains in the vehicle.
Work procedure: 1

Þ Convert
Convert previous plug-side holder ⇒
high-voltage charger holder -1- from previous 22
kW high-voltage charger to new 11 kW high-voltage
charger.
1.1

Þ Convert high-voltage
Thread-off screws ⇒
charger holder -2-.

Convert high-voltage charger holder
1.2

Þ Convert high-voltage
Remove holder ⇒
charger holder -1- and position on new 11 kW
high-voltage charger. ⇒ Install high-voltage
charger holder

1.3

Þ Install
Screw-in and tighten new screws ⇒
high-voltage charger holder -2-.
Tightening torque 8 Nm (5.9 ftlb.)

Install high-voltage charger holder

Apr 2, 2026
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AfterSales

Service