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Remove/install radar sensor - AR30.30-P-1210RK

MODEL 231 with CODE 233 (DISTRONIC PLUS) 

Fig 1: Radar Sensor Remove/Install Components
G11128669NOTESREMOVINGINSTALLINGIMPORTANTIMPORTANTINSTALLATION IMPORTANTREFER TO SELF-DIAGNOSTIC SYSTEMSCourtesy of MERCEDES-BENZ USA
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Switch off ignition and remove transmitter key (A8/1) or KEYLESS-GO start/stop button (S2/3) from electronic ignition lock control unit (N73) IMPORTANT KEYLESS-GO start/stop button (S2/3) only with code (889) KEYLESS-GO.  
2 Remove front bumper (1)   AR88.20-P-2000RK
3 Unclip DISTRONIC (DTR) bumper sensor at the front left (B29/2) or DISTRONIC (DTR) bumper sensor at the front right (B29/3) from bracket (2) at the front bumper (1) IMPORTANT Detach impact absorber (4) one piece from the front bumper (1).
INSTALLATION IMPORTANT Ensure correct seating of DISTRONIC (DTR) bumper sensor at the front left (B29/2) or DISTRONIC (DTR) bumper sensor at the front right (B29/3) in the bracket (2).
 
4 Disconnect electrical connection (3) on DISTRONIC (DTR) bumper sensor at the front left (B29/2) or DISTRONIC (DTR) bumper sensor at the front right (B29/3)    
5 Remove DISTRONIC (DTR) sensor on the bumper at the front left (B29/2) or DISTRONIC (DTR) sensor on the bumper at the front right (B29/3) from the bumper    
6 Install in the reverse order    
7 Connect STAR DIAGNOSIS, read out fault memory and erase if necessary    
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04A