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Home >> Mercedes Benz >> 2019 >> B250 Base >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instructions - 246 Chassis >> Testing & Repair >> Remove/install Parktronic system (PTS) sensors in rear bumper - AR54.65-P-0002NKB

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

MODEL 117, 156, 176, 242, 246 with CODE 220 (PARKTRONIC) 

MODEL 117, 156, 176, 242, 246 with CODE 235 (Active Parking Assist with PARKTRONIC) 

Shown on model 117 

Fig 1: Identifying Parktronic System Sensors Remove/Install Components - Shown On Model 117
G10251218Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Lift/jack up vehicle Model 117
with code 220 (PARKTRONIC)
Model 117
with code 235 (Active Parking Assist with
PARKTRONIC)
Model 242 with engine 780
with code 220 (PARKTRONIC)
Model 242 with engine 780
with code 235 (Active Parking Assist with PARKTRONIC)
 
AR00.60-P-1000AK
2 Detach fender liner in rear wheel arch from shielding over rear muffler and rear bumper, then push to one side Model 117
with code 220 (PARKTRONIC)
Model 117
with code 235 (Active Parking Assist with PARKTRONIC)
When removing the rear right outer parking system distance sensor (B8/7) or the rear left outer parking system distance sensor (B8/10).
 
3 Remove rear muffler Model 117
with code 220 (PARKTRONIC)
Model 117
with code 235 (Active Parking Assist with PARKTRONIC)
When removing the rear right inner parking system distance sensor (B8/8), rear left inner parking system distance sensor (B8/9), rear left center parking system distance sensor (B8/11) or rear right center parking system distance sensor (B8/12).
 
Model 246, 242
Model 117 with engine 270
with code 220 (PARKTRONIC)
Model 117 with engine 270
with code 235 (Active Parking Assist with PARKTRONIC)
AR49.10-P-4952MT
Model 117 with engine 133
with code 220 (PARKTRONIC)
Model 117 with engine 133
with code 235 (Active Parking Assist with PARKTRONIC)
AR49.10-P-7100MTA
Model 117 with engine 651
with code 220 (PARKTRONIC)
Model 117 with engine 651
with code 235 (Active Parking Assist with PARKTRONIC)
AR49.10-P-7100OLB
4 Remove shielding over rear muffler Model 117
with code 220 (PARKTRONIC)
Model 117
with code 235 (Active Parking Assist with PARKTRONIC)
When removing the rear right inner parking system distance sensor (B8/8), rear left inner parking system distance sensor (B8/9), rear left center parking system distance sensor (B8/11) or rear right center parking system distance sensor (B8/12).
 
5 Remove covering over rear axle Model 242 with engine 780
with code 220 (PARKTRONIC)
Model 242 with engine 780
with code 235 (Active Parking Assist with PARKTRONIC)
 
AR61.30-P-1001NKB
6 Detach corresponding rear parking system distance sensor (B8/7, B8/8, B8/9, B8/10, B8/11 or B8/12) from bumper, to do so, release locks on bracket (1) (arrows) IMPORTANT Model 117, 156
with code 220 (PARKTRONIC)
Model 117, 156
with code 235 (Active Parking Assist with PARKTRONIC)
The rear left center parking system distance sensor (B8/11) and the rear right center parking system distance sensor (B8/12) are also installed.
 
INSPECT Check     
7 Check decoupling ring (3) for damage If damage is present ↓
Replace decoupling ring (3).
 
8 Detach corresponding electrical connection (2) from rear parking system distance sensor (B8/7, B8/8, B8/9, B8/10, B8/11 or B8/12) from bumper    
9 Install in the reverse order    
INSPECT Check     
10 Perform function test