Mercedes-Benz 2007 GL 320 CDI Operator's Manual page 536

Step 5 (Disconnecting)
5 Protection cover
6 Battery
Unclip protection cover 5 from
battery 6 and remove it.
Step 6 (Disconnecting)
7 Positive terminal
8 Negative terminal
Disconnect battery negative lead 8
from negative terminal.
Remove positive terminal cover.
Disconnect the battery positive
lead 7.
Practical hints
Step 7 (Removing)
9 Battery ventilation hose
a Attachment nut
b Mounting
Remove the battery ventilation
hose 9 by pulling it out.
Unfasten and remove attachment
nuts a.
Remove mounting b.
Battery
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