Remove/install on-board electrical system battery

AR54.10-D-0009TSF

Remove/install on-board electrical system battery

28.08.2020

Model

910

Modification notes

27.08.2020

Method extended

Operation step 14

2

Bolts

3

Cover

1

On-board electrical system battery

8

Bracket

4

Nut

9

Screw

5

Ground cable

10

Prefuse box

6

Cover for positive terminal

11

Vent hose

7

Nut

12

Nut

 Danger

Risk of fire/risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death due to voltage U >= 30 V AC and U >= 60 V DC.

No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers.

AS54.10-Z-0001-01A

Topical note

General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment

Model 910 with engine 780.703

AH00.00-Z-0300-01A

Topical note

Notes on battery

AH54.10-P-0001-01A

Topical note

Notes on carrying out repair work in the vehicle interior

AH68.00-N-0001-01S

 

Remove/install

1

Disconnect charging cable connector of high-voltage on-board electrical system and wait 30 s until power-down is complete.

Model 910 with engine 780.703
If high-voltage on-board electrical system is charged via a charging cable connector.

2

Disconnect charger from on-board electrical system battery (1).

When an external charger is connected.

3

Move driver seat to rearmost position.

4

Switch off ignition and store transmitter key outside of transmission range (min. 2  m).

 After the ignition has been switched off, a run-on time of approx. 2 minutes must be waited before disconnecting the ground line (5).

5

Remove front floor covering.

AR68.80-D-0006TSF

6

Remove bolts (2) .

7

Remove cover (3).

8

Release nut (4).

 Nut, battery clamp to negative pole/positive pole of on-board electrical system battery/auxiliary battery

*BA54.10-N-1001-01TS

9

Disconnect ground line (5) from on-board electrical system battery (1) and remove from working area.

10

Fold up positive pole cover (6).

11

Loosen nut (7).

 Nut, battery clamp to negative pole/positive pole of on-board electrical system battery/auxiliary battery

*BA54.10-N-1001-01TS

12

Loosen nut (12).

 Loosening the nut (12) makes it possible to move the prefuse box (10) on the on-board electrical system battery (1).

13

Remove prefuse box (10) with connected electrical lines from on-board electrical system battery (1).

AR54.15-D-1353TSF



Check

14

Check for absence of voltage on 12 V on-board electrical system.

Model 910
with code ME0 (Electric motor 85 kW)



Service Information: Determine absence of voltage of 12 V on-board electrical system after removing the ground or positive line of the on-board electrical system battery

SI54.10-S-0072A



000 588 07 19 00 Measuring instrument

WS54.00-N-3005B

 The engine hood must be closed. Observe the Service Information.

15

Detach vent hose (11) from on-board electrical system battery (1).

 Installation:
Check that the vent hose (11) is correctly seated.
Otherwise escaping battery acid mist can cause damage to the vehicle.

16

Remove screws (9).

17

Remove holder (8) with screws (9) and vent hose (11).

 Vent hose (11) remains in holder (8).

18

Remove on-board electrical system battery (1).


Handle prefuse box (10) carefully.
Otherwise the prefuse box (10) or the electrical system of the vehicle may be damaged.

 To do so, remove prefuse box (10) and ground line (5) as far as possible upwards and out of the working area.

19

Install in the reverse order.

20

Set time and date in instrument cluster.

 Battery

Number

Designation

Model 910

BA54.10-N-1001-01TS

Nut, battery clamp to negative pole/positive pole of on-board electrical system battery/auxiliary battery

Nm

5