Remove/Install Radar Sensor For Lane Assistant In Rear Bumper - AR54.71-P-0200LF

Model 217, 222 

up to model year 2018 

with code 238 (Active lane keeping Assist) 

Model 217, 222 

up to model year 2018 

with code 253 (Rear impact warning and protection system) 

Shown on model 222 

Fig 1: Rear Lane Assistant Radar Sensor Component Location - Model 217 Up To Model Year 2018 With Code(s) 238 & 253 (Shown On Model 222)

Courtesy of MERCEDES-BENZ USA

Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
Topical note	Notes on preventing damage to electronic components due to a magnetic tool		AH54.00-P-0002-01A
	Remove/install
1	Remove rear bumper.	Model 217	AR88.20-P-2200LC
		Model 222	AR88.20-P-2200LF
2	Remove expansion rivets (1).	Model 222 : Check expansion rivet (1) for damage and replace if necessary.
3.1	Push retaining frame downwards (arrow) and remove rear center bumper radar sensor (B29/10).	Model 222
3.2	Release retaining lugs and remove rear center bumper radar sensor (B29/10).	Model 217
4	Release and disconnect electrical connector (2).
5	Install in the reverse order.
6	Commission rear center bumper radar sensor (B29/10).	When replacing rear center bumper radar sensor (B29/10).
			AD00.00-P-2000-04B