Remove/install Parktronic system (PTS) sensors in rear bumper - AR54.65-P-0002TX

MODEL 219.3 with CODE (220) Parktronic system (PTS) 

Fig 1: Identifying Rear Bumper Parktronic System Sensors Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/Install
1	Remove rear bumper (1)		AR88.20-P-2200TX
2	Unclip sensor (A43b7, A43b8, A43b9 or A43b10) from rear bumper (1)	Check sealing ring (3) and replace if damaged.
3	Separate electrical connector (2) from sensor (A43b7, A43b8, A43b9 or A43b10)	Ensure that electrical connector (2) is seated properly.
4	Install in the reverse order