Remove/Install Ultrasonic Sensors In Front Bumper - AR54.65-P-0036S

Model 223 

with code 235 (Active Parking Assist) 

Fig 1: Ultrasonic Sensors In Front 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 corresponding front section of fender liner at front.	When removing the parking system distance sensor (B8/1, B8/6).
		Model 223.0/1 with code 235 (Active Parking Assist)	AR88.10-P-1301S
2	Remove front bumper (1).	When removing the parking system distance sensor (B8/2, B8/3, B8/4, B8/5).
		Model 223.0/1 with code 235 (Active Parking Assist)	AR88.20-P-2000S
3	Release and disconnect electrical connector (2) from corresponding parking system distance sensor (B8/1, B8/2, B8/3, B8/4, B8/5, B8/6).
4	Release catch hooks (arrows) and remove parking system distance sensor (B8/1, B8/2, B8/3, B8/4, B8/5, B8/6) from corresponding holder (3).
Notice	Information on painting PARKTRONIC system sensors		AH98.00-P-9019-02A
		If the parking system distance sensor (B8/1, B8/2, B8/3, B8/4, B8/5, B8/6) is replaced, it must be painted.
5	Check decoupling ring (4) of removed parking system distance sensor (B8/1, B8/2, B8/3, B8/4, B8/5, B8/6).	If there is a problem, ↓ replace decoupling ring (4).
6	Install in the reverse order.