Mercedes-Benz 420 SEL 1988, Owner'S Manual

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When the rear door lock buttons are
down, the rear doors cannot be
opened from the outside or the inside,
unless the door lock buttons are first
pulled up.
The driver’s door can be locked only
if it is closed and the door lock has
properly engaged.
Opening the Doors
From outside: pull handle (1)
outwards.
From inside: pull handle (4) in door
trim panel.
Locking and Unlocking of Doors
From the outside: turn key.
From the inside: actuate door lock
button.
2 Unlocking
3 Locking
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