Mercedes-Benz 2008 R 320 CDI 4MATIC Operator's Manual page 509

Practical hints
Battery
Step 5 (Disconnecting)
7 Battery cover mounting nuts
Unfasten and remove battery cover
mounting nuts 7.
508
Step 6 (Disconnecting)
8 Battery cover with integrated air
channel
9 Pulling battery cover out
a Lifting battery cover
Lift battery cover 8 slightly in direc-
tion of arrow a.
Pull battery cover 8 in direction of
arrow 9.
Remove battery cover 8.
Step 7 (Disconnecting)
b Battery ventilation hose
c Battery
d Battery attachment
e Attachment nuts
Pull battery ventilation hose b out of
battery c.
Unfasten and remove attachment
nuts e.
Remove battery attachment d.
Push battery c to the left.