Perform disable/initial startup for high-voltage on-board electrical system

AR54.10-P-1150LF

Perform disable/initial startup for high-voltage on-board electrical system

02.12.2019

Model

222.004/057/104/157/163/173

S7

High-voltage disconnect device

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.

AS00.00-Z-0035-01A

Topical note

General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system

AH00.00-Z-0300-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on preventing damage to electronic components due to a magnetic tool

AH54.00-P-0002-01A

Topical note

Notes on battery

AH54.10-P-0001-01A

Power disable

1

Detach charging cable and prevent it from being connected again using a warning sign.

Model 222.163/173

 The socket flap in the rear bumper can no longer be opened once the power disable for the high-voltage on-board electrical system has been conducted.

 Warning label

*451589086300

2

Run quick test of control units using diagnostic system.



AD00.00-P-2000-04B

 To do so, select following menu items:
Control unit entry menu 
High voltage on-board electrical system 
High-voltage on-board electrical system disable
Then work through the specified procedure in full.

3

Perform power disable process with vehicle diagnosis system.



AD00.00-P-2000-04B

Model 222.173 with engine 276.824

AR47.70-P-1010LFG

Model 222.163 with engine 276.824

AR47.70-P-1010LFH

 Model 222.004/057/104/157
Process disabling work procedure in the following menu items:
"Electric motor control unit"
"VGS4NAG2 fully integrated transmission control"
"BMS battery management system"

 Model 222.163/173
Process disabling work procedure in the following menu items:
"Electric motor control unit"
"VGS4NAG2 fully integrated transmission control"
"BMS battery management system"
"High-voltage battery charger"
"DC/DC converter"

If power disable process cannot be performed with vehicle diagnosis system,



Perform manual power disabling for high-voltage on-board electrical system.

4

Remove load compartment well.

AR68.30-P-4600LF

5

Actuate high-voltage disconnect device (S7) as shown in picture sequence (A B C) and lock with padlock.

 The key for the padlock of the high-voltage disconnect device (S7) is to be stored separately and only made accessible to authorized persons.

6

Print out power disable event log, sign, and place in vehicle in a clearly visible position.

Initial startup

7

Run quick test of control units using diagnostic system.



AD00.00-P-2000-04B

 To do so, select following menu items:
Control unit entry menu 
High voltage on-board electrical system 
High-voltage on-board electrical system initial startup
Then work through the specified procedure in full.

8

Carefully connect high-voltage disconnect device (S7) (see arrows (1, 2, 3) and picture sequence D E F).


Carefully connect high-voltage shutoff device (S7).
Otherwise, the high-voltage disconnect device (S7) may be damaged.

9

Check high-voltage disconnect device (S7).

If damage is present,



remove contact pins from plug housing of high-voltage disconnect device (S7) and replace high-voltage disconnect device (S7).

AR00.19-P-0120-31A

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*220589049900

 Unlocker with ejector MLK 1.2_plug

*220589019925

 Wiring harness repair kit, basic

*000589139900

10

Install load compartment well.

AR68.30-P-4600LF

11

Perform commissioning with vehicle diagnosis system.



AD00.00-P-2000-04B

 Model 222.004/057/104/157
Process commissioning work procedure in the following menu items:
"Electric motor control unit"
"VGS4NAG2 fully integrated transmission control"
"BMS battery management system"

 Model 222.163/173
Process commissioning work procedure in the following menu items:
"Electric motor control unit"
"VGS4NAG2 fully integrated transmission control"
"BMS battery management system"
"High-voltage battery charger"
"DC/DC converter"

12

Print out commissioning event log and sign.

13

Disconnect diagnostic system.



AD00.00-P-2000-04B

14

Detach warning sign.

Model 222.163/173

 Warning label

*451589086300

15

Place commissioning event log and power disable event log in order folder.