Remove/Install Steering Wheel Electronics - AR82.90-P-0100S

Model 206, 214, 223, 236, 294, 295, 296, 297

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

Model 254

with code L3E (Sport steering wheel - smooth split leather)

except code U88 (AMG steering wheel buttons (AMG DRIVE UNIT))

Model 254

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

except code U88 (AMG steering wheel buttons (AMG DRIVE UNIT))

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
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Remove
1	Remove driver's airbag from steering wheel.	Model 206, 214, 236 with code L5C (Supersport steering wheel - leather deep-embossed) Model 254 with code L3E (Sport steering wheel - smooth split leather) except code U88 (AMG steering wheel buttons (AMG DRIVE UNIT)) Model 254 with code L5C (Supersport steering wheel - leather deep-embossed) except code U88 (AMG steering wheel buttons (AMG DRIVE UNIT))	AR91.60-P-0663WT
		Model 223 with code L5C (Supersport steering wheel - leather deep-embossed)	AR91.60-P-0663S
		Model 294, 295, 296, 297 with code L5C (Supersport steering wheel - leather deep-embossed)	AR91.60-P-0663EQS
2	Remove screws (1).
3	Remove mounting plate (2), and release and disconnect electrical connector (3).
4	Remove washers of screws (1).	If washers are installed.
5	Release and disconnect electrical connector at steering column tube module control unit (N80).
6	Remove screws (4) and unclip cover (5).
7	Unscrew screws (6) and remove lower cover (7).
8	Unscrew screws (8), release and disconnect electrical connectors of steering wheel electronics (N135), and remove steering wheel electronics (N135).	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.
		If lower washers are installed, observe installation position of lower washers.
9	Unclip hand detection system control unit (N179) from steering wheel electronics (N135), release and disconnect electrical connectors.	Model 206, 214, 223, 236, 294, 295, 296, 297 with code 266 (DISTRONIC PLUS with Cross-Traffic Assist (DTR+Q)) with code L5C (Supersport steering wheel - leather deep-embossed) Model 254 with code 266 (DISTRONIC PLUS with Cross-Traffic Assist (DTR+Q)) with code L3E (Sport steering wheel - smooth split leather) except code U88 (AMG steering wheel buttons (AMG DRIVE UNIT)) Model 254 with code 266 (DISTRONIC PLUS with Cross-Traffic Assist (DTR+Q)) with code L5C (Supersport steering wheel - leather deep-embossed) except code U88 (AMG steering wheel buttons (AMG DRIVE UNIT)) 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.
	Install
10	Connect and lock electrical connectors, and install hand detection system control unit (N179) in steering wheel electronics (N135).	Model 206, 214, 223, 236, 294, 295, 296, 297 with code 266 (DISTRONIC PLUS with Cross-Traffic Assist (DTR+Q)) with code L5C (Supersport steering wheel - leather deep-embossed) Model 254 with code 266 (DISTRONIC PLUS with Cross-Traffic Assist (DTR+Q)) with code L3E (Sport steering wheel - smooth split leather) except code U88 (AMG steering wheel buttons (AMG DRIVE UNIT)) Model 254 with code 266 (DISTRONIC PLUS with Cross-Traffic Assist (DTR+Q)) with code L5C (Supersport steering wheel - leather deep-embossed) except code U88 (AMG steering wheel buttons (AMG DRIVE UNIT)) 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 the electrical connectors are engaged correctly.
11	Connect and lock electrical connectors of steering wheel electronics (N135), install steering wheel electronics (N135), and screw in screws (8).	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 the electrical connectors are engaged correctly. Ensure that routing of lines is correct. If lower washers are installed, observe installation position of lower washers. Model 254 Bolt, front cover to steering wheel Model 206, 214, 223, 236, 294, 295, 296, 297	*BA46.10-P-1003-02C
		Screw, front cover to steering wheel	*BA46.10-P-1004-02J
12	Install lower cover (7) and screw in screws (6).	Model 254 Bolt, front cover to steering wheel	*BA46.10-P-1003-02C
		Model 206, 214, 223, 236, 294, 295, 296, 297 Screw, front cover to steering wheel	*BA46.10-P-1004-02J
13		Model 254 Bolt, front cover to steering wheel	*BA46.10-P-1003-02C
		Model 206, 214, 223, 236, 294, 295, 296, 297 Screw, front cover to steering wheel	*BA46.10-P-1004-02J
14	Connect and lock electrical connectors from steering column tube module control unit (N80).	Ensure correct engagement of electrical connector.
15	Check line routing of electrical wiring harness in steering wheel.		AR82.90-P-0101-01FRD
16	Install washers of screws (1).	If washers are installed.
17	Install mounting plate (2), connect electrical connector (3).	Make sure that the electrical connector (3) engages correctly.
18	Screw in screws/bolts (1).	Model 254 Screw, mounting plate/contact plate to steering wheel	*BA46.10-P-1002-02C
		Model 206, 214, 223, 236, 294, 295, 296, 297 Screw, mounting plate/contact plate to steering wheel	*BA46.10-P-1002-02J
19	Install driver's airbag at steering wheel.	Model 206, 214, 236 with code L5C (Supersport steering wheel - leather deep-embossed) Model 254 with code L3E (Sport steering wheel - smooth split leather) except code U88 (AMG steering wheel buttons (AMG DRIVE UNIT)) Model 254 with code L5C (Supersport steering wheel - leather deep-embossed) except code U88 (AMG steering wheel buttons (AMG DRIVE UNIT))	AR91.60-P-0663WT
		Model 294, 295, 296, 297 with code L5C (Supersport steering wheel - leather deep-embossed)	AR91.60-P-0663EQS
		Model 223 with code L5C (Supersport steering wheel - leather deep-embossed)	AR91.60-P-0663S
20	Connect vehicle diagnosis system and perform commissioning.	When replacing steering wheel electronics (N135).
			AD00.00-P-2000-06FR
21	Perform function test of steering wheel buttons.

STEERING WHEEL

Number	Designation		Model 254
BA46.10-P-1002-02C	Screw, mounting plate/contact plate to steering wheel	Nm	7

STEERING WHEEL

Number	Designation		Model 206, 214	Model 223
BA46.10-P-1002-02J	Screw, mounting plate/contact plate to steering wheel	Nm	7	8

STEERING WHEEL

Number	Designation		Model 236	Model 294
BA46.10-P-1002-02J	Screw, mounting plate/contact plate to steering wheel	Nm	8	8

STEERING WHEEL

Number	Designation		Model 295	Model 296
BA46.10-P-1002-02J	Screw, mounting plate/contact plate to steering wheel	Nm	8	8

STEERING WHEEL

Number	Designation		Model 297
BA46.10-P-1002-02J	Screw, mounting plate/contact plate to steering wheel	Nm	8

STEERING WHEEL

Number	Designation		Model 254
BA46.10-P-1003-02C	Bolt, front cover to steering wheel	Nm	3

STEERING WHEEL

Number	Designation		Model 206, 214	Model 223
BA46.10-P-1004-02J	Screw, front cover to steering wheel	Nm	3	3

STEERING WHEEL

Number	Designation		Model 236	Model 294
BA46.10-P-1004-02J	Screw, front cover to steering wheel	Nm	3	3

STEERING WHEEL

Number	Designation		Model 295	Model 296
BA46.10-P-1004-02J	Screw, front cover to steering wheel	Nm	3	3

STEERING WHEEL

Number	Designation		Model 297
BA46.10-P-1004-02J	Screw, front cover to steering wheel	Nm	3