Remove/install steering column module - AR54.25-P-2802NKB

MODEL 117 

MODEL 156 

MODEL 176 

MODEL 242 

MODEL 246 

Shown on MODEL 246 

Fig 1: Steering Column Module Remove/Install Components - Shown On Model 246

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Perform initial startup of steering column tube module (1)	Only when replacing steering column tube module (1).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
2	Remove steering wheel		AR46.10-P-0100NKB
3	Detach steering column tube module (1) from steering column tube until the cover on the steering column tube (4) can be unclipped
4	Unclip covering for steering column tube (4) from steering column tube module (1)
5	Pull steering column tube module (1) off steering column tube	Do not operate the red safety catches in the steering column tube module (1). Otherwise irreparable damage will be caused to the fanfare horns and airbag clock spring contact. The steering column tube module (1) contains the fanfare horns and airbag clock spring contact, the steering angle sensor, the steering column tube module control unit and the switch unit. It is one component and can only be removed or replaced complete.
		When the steering column tube module (1) is in the correct installation position, the assembly indicator (3) is retracted. When installing a new steering column tube module (1) the transportation lock (2) must be broken off once mounted.
6	Unclip cable duct (6) with electrical line from steering column tube module (1)
7	Separate electrical connection (5) at steering column tube module (1)		AR54.25-P-2802-02CW
		The locking clip for the electrical connector (5) is destroyed here and it has to be replaced.
8	Install in the reverse order
9	Initialize DISTRONIC electric controller unit	MODEL 117, 156, 176, 242, 246 with CODE 239 (DISTRONIC PLUS) After replacing steering column tube module (1).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A