Remove/Install Button Groups On Multifunction Steering Wheel - AR82.90-P-0014FRA

Model 213, 238, 257 

with code L2B (Leather luxury steering wheel) 

except code L5C (Supersport steering wheel - leather deep-embossed) 

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove
1	Remove driver's airbag from steering wheel.	Model 213 with code L2B (Leather luxury steering wheel) except code L5C (Supersport steering wheel - leather deep-embossed)	AR91.60-P-0660LW
		Model 257 with code L2B (Leather luxury steering wheel) except code L5C (Supersport steering wheel - leather deep-embossed)	AR91.60-P-0660FR
2	Remove bolts (1).
3	Remove mounting plate (2) and release and disconnect electrical connector (7).
4	Remove washers of screws (1).	If washers are installed.
5	Unscrew screws (4, 10) and unclip cover (5) with multifunction steering wheel button group 1 (S163/1), multifunction steering wheel button group 2 (S163/2) until electrical connectors (3, 6) are accessible.	Do not crush or kink or subject electric lines to tension. This will result in damage to the electric lines and can impair their function. Long wedge	Fig 1
6	Release and disconnect electrical connectors (3, 6), remove electrical wiring harness of electrical connectors (3) from cover (5).
7	Remove cover (5) with multifunction steering wheel button group 1 (S163/1), multifunction steering wheel button group 2 (S163/2).
8	Release and disconnect electrical connectors (8) at multifunction steering wheel button group 1 (S163/1) and multifunction steering wheel button group 2 (S163/2).
9	Unscrew screws (9) and remove multifunction steering wheel button group 1 (S163/1) or multifunction steering wheel button group 2 (S163/2).	Replace multifunction steering wheel button group 1 (S163/1) and multifunction steering wheel button group 2 (S163/2) in sets only.
	Install
10	Attach multifunction steering wheel button group 1 (S163/1) or multifunction steering wheel button group 2 (S163/2) at cover (5) and screw in screws (9).	Screw, button group to cover	*BA46.10-P-1005-02J
11	Connect and lock electrical connectors (8) of multifunction steering wheel button group 1 (S163/1) or multifunction steering wheel button group 2 (S163/2).	Do not crush or kink or subject electric lines to tension. This will result in damage to the electric lines and can impair their function. Ensure that electrical connectors (8) engage correctly. Ensure that routing of lines is correct.
12	Connect and lock electrical connectors (3, 6) and install electrical wiring harness of electrical connectors (3) at cover (5).	Ensure that electrical connectors (3, 6) engage correctly.
13	Install cover (5) and screw in screws (4, 10).	Do not crush or kink or subject electric lines to tension. This will result in damage to the electric lines and can impair their function. Screw, rear cover to steering wheel	*BA46.10-P-1007-02J
		Screw, front cover to steering wheel	*BA46.10-P-1004-02J
14	Check line routing of electrical wiring harness in steering wheel.		AR82.90-P-0101-01FRA
15	Install washers of screws (1).	If washers are installed. Make sure that the washers of the screws (1) are seated correctly. Otherwise, the horn is not operational.
16	Install mounting plate (2) and connect electrical connector (7).	Ensure that electrical connector (7) engages correctly.
17	Screw in screws/bolts (1).	Screw, mounting plate/contact plate to steering wheel	*BA46.10-P-1002-02J
18	Install driver's airbag at steering wheel.	Model 213 with code L2B (Leather luxury steering wheel) except code L5C (Supersport steering wheel - leather deep-embossed)	AR91.60-P-0660LW
		Model 257 with code L2B (Leather luxury steering wheel) except code L5C (Supersport steering wheel - leather deep-embossed)	AR91.60-P-0660FR
19	Perform function test of steering wheel buttons.

Fig 1: Identifying Long Wedge (115 589 03 59 00)

Courtesy of MERCEDES-BENZ USA