Remove/install Parktronic system (PTS) sensors in front bumper - AR54.65-P-0001GZ

MODEL 164 with CODE (220) Parktronic system (PTS) 

Fig 1: Identifying Parktronic System (PTS) Sensors In Front Bumper Remove/Install Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/instal
1	Remove front bumper		AR88.20-P-2000GZ
2	Disconnect electrical connector (1)
3	Unlock the corresponding circlip (2) using the unlocking tool	Unlocking tool	Fig 2
4	Take outer left front PTS ultrasonic sensor (B8/1) or center left front PTS ultrasonic sensor (B8/2) or Inner left front PTS ultrasonic sensor (B8/3) or inner right front PTS ultrasonic sensor (B8/4) or center right front PTS ultrasonic sensor (B8/5) or outer right front PTS ultrasonic sensor (B8/6) out of the bumper	Installation:  Check seal (3) and replace if damaged.
5	Install in the reverse order

Fig 2: Identifying Unlocking Tool (168 589 02 31 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.