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

Model 118, 247 

as of model year 2023 

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

except code L3A (multifunction sports steering wheel) 

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

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

Model 167 

as of model year 2022 

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

except code L2B (Leather luxury steering wheel) 

except code L2D (Luxury leather steering wheel with trim element) 

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

Model 177 

as of model year 2022 

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

except code L3A (multifunction sports steering wheel) 

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

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

Model 192, 232 

Model 290 

as of model year 2021 

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

Courtesy of MERCEDES-BENZ USA

Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove steering wheel electronics (N135) with lower multifunction steering wheel button group 1 (S163/3) and lower multifunction steering wheel button group 2 (S163/4).		AR82.90-P-0100FRB
2	Unclip instrument cluster multifunction steering wheel button group (S163/1) or head unit multifunction steering wheel button group (S163/2).	Long wedge	Fig 1
3	Release and disconnect electrical connector and remove instrument cluster multifunction steering wheel button group (S163/1) or head unit multifunction steering wheel button group (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 routing of lines is correct. Ensure that the electrical connectors are engaged correctly. Replace instrument cluster multifunction steering wheel button group (S163/1) and head unit multifunction steering wheel button group (S163/2) as a set only.
4	Install in the reverse order.