Disconnect/connect battery ground line

AR54.10-P-0003SR

Disconnect/connect battery ground line

18.11.2019

Model

453

Modification notes

25.04.2017

Disconnect diagnostic system, added.

Operation step 2

1

Negative terminal

G1

On-board electrical system battery

 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

Notes on battery

AH54.10-P-0001-01A

Disconnect, connect

1

Detach high-voltage charging cable on both sides

Model 453.09/39/49
If high-voltage charging cable is connected.

2

Switch off ignition and remove key from ignition lock


All electrical consumers must be switched off.
They may otherwise be damaged when the negative terminal (1) is disconnected/connected.

3

Disconnect vehicle diagnosis system

If diagnostic system is connected.

4

Close doors

 Wait until the daytime running lamps have gone out.

5

Open maintenance flap

6

Loosen negative terminal (1) and remove from on-board electrical system battery (G1)

 Nut, battery cable to negative terminal/positive terminal of on-board electrical system battery

*BA54.10-P-1007-01I

7

Connect in the reverse order

8

Reset clock

 See Owner's Manual.

 Battery

Number

Designation

Model 453

BA54.10-P-1007-01I

Nut, battery cable to negative terminal/positive terminal of on-board electrical system battery

Nm

8