Remove/Install Ultrasonic Sensors In Rear Bumper - AR54.65-P-0037S

Model 223 

with code 235 (Active Parking Assist) 

Fig 1: Parking Ultrasonic Sensors In Rear Bumper Components Location - Model 223 With Code 235

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 rear bumper (1).	Model 223 with code 235 (Active Parking Assist)
		Model 223.0/1 with code 235 (Active Parking Assist)	AR88.20-P-2200S
2	Release and disconnect electrical connector (2) at corresponding parking system distance sensor (B8/7, B8/8, B8/9, B8/10, B8/11, B8/12).
3	Release catch hooks (arrows) and remove parking system distance sensor (B8/7, B8/8, B8/9, B8/10, B8/11, B8/12) from corresponding holder (3).
Notice	Information on painting PARKTRONIC system sensors		AH98.00-P-9019-02A
		If parking system distance sensor (B8/7, B8/8, B8/9, B8/10, B8/11, B8/12) is replaced, it must be painted.
4	Check decoupling ring (4) of removed parking system distance sensor (B8/7, B8/8, B8/9, B8/10, B8/11, B8/12).	If there is a problem, ↓ replace decoupling ring (4).
5	Install in the reverse order.