Remove/Install Parktronic System (PTS) Sensors In Rear Bumper - AR54.65-P-0002GQC

Model 166 

as of model year 2016 

with code 235 (Active Parking Assist with PARKTRONIC) 

Model 292 

with code 235 (Active Parking Assist with PARKTRONIC) 

Fig 1: Parktronic System/PTS Sensors In Rear Bumper Components Location - Model 166 As Of Model Year 2016 With 235 (Shown On Model 292.374)

Courtesy of MERCEDES-BENZ USA

Shown on MODEL 292.374 

Courtesy of MERCEDES-BENZ USA

	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove rear bumper (1)	Model 166.8 as of model year 2016 with code 235 (Active Parking Assist with PARKTRONIC)	AR88.20-P-2200GQA
		Model 166.0 as of model year 2016 with code 235 (Active Parking Assist with PARKTRONIC) Model 292 with code 235 (Active Parking Assist with PARKTRONIC)	AR88.20-P-2200GQ
2	Unlock locks (arrows) and remove corresponding parking system distance sensor (2)	: Make sure that the decoupling ring (4) is installed at the correct position. The parking system distance sensor (2) can otherwise malfunction. : The decoupling ring (4) must be checked for damage and, if necessary, replaced.
3	Release and disconnect electrical connection (3) from corresponding parking system distance sensor (2)
4	Install in the reverse order
	Check
5	Switch on ignition and PARKTRONIC, engage reverse gear and release parking brake	The PARKTRONIC automatically performs a self-test and the operational readiness is signaled via the warning indicator.