Checking the function of the backrest lock - wh9151pkw0000x(9151)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Models 124.04/05/06 to 6/93, 126.04, 140.07 to 6/93

Fig 1: Identifying Seat Backrest Lock Knob

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Engine	allow to idle.
Door	open, it should be possible to fold the backrest forward.
Door	close, backrest should be locked in place.
Knob (arrow)	actuate. Backrest lock should release with door closed.