Remove/install front bumper

AR88.20-P-2000FR

Remove/install front bumper

07.08.2018

Model

257, 290

Shown on model 257

1

Front bumper

2

Screw

3

Screw

B14

Outside temperature sensor

X26/38

Front bumper electrical connector

Shown on model 257

1

Front bumper

4

Bolts

5

Catch hook

6

Bolts

7

Bolts

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

 

Remove/install

1

Disconnect ground line from battery.

AR54.10-P-0003FR

2

Remove front engine compartment linings.

Model 290

AR61.20-P-1105FRX

Model 257

AR61.20-P-1105FR

3

Remove front left and right fender liner in fender from front bumper (1).

AR88.10-P-1301FR

4

Remove screws (2) on left and right from front bumper (1).

5

Remove screws (3) on left and right from front bumper (1).

6

Disconnect front bumper electrical connector (X26/38).

7

Remove outside temperature sensor (B14) from front bumper (1).

8

Disconnect electrical connector from front 360° camera.

Model 257, 290
with code 501 (360° camera)

9

Remove screws (4) on left and right from front bumper (1).

10

Unscrew screws (7).

 Installation: Tighten bolts (7) only after adjusting the gap dimensions.

11

Remove screw/bolts (6).

 Installation: Tighten screws (6) only after adjusting the gap dimensions.

12

Release catch hooks (5) and guide out front bumper (1).

 Installation: Press in catch hooks (5) only to first catch.

13.1

Disconnect electrical connector from Mercedes star.

Model 257, 290
with code 233 (DISTRONIC PLUS)
Model 257, 290
with code 239 (DISTRONIC PLUS)

13.2

Disconnect electrical connector from radar sensor.

Model 257, 290
with code 258 (Active Brake Assist System)

14

Remove front bumper (1).

 Helper required.



Check

Topical note

General information on the impact absorber

AH88.20-P-1000-01A

15.1

Check impact absorber for damage.

Model 257, 290
except code U60 (Active Bonnet (Pedestrian protection))

If there is a problem on the impact absorber,



Replace impact absorber.

15.2

Check pedestrian protection sensor and impact absorber for damage of any kind (cracks, holes, breakovers, etc.).

Model 257, 290
with code U60 (Active Bonnet (Pedestrian protection))

Topical note

Notes on pedestrian protection sensor

AH91.60-P-0001-01A

If there is a problem,



replace impact absorber or pedestrian protection sensor.

AR91.60-P-0950FR

16

Install in the reverse order.

17

Set gap dimensions at front bumper (1).

AR88.20-P-2001FR

18

Calibrate front 360° camera with vehicle diagnosis system.

Model 257, 290
with code 501 (360° camera)



AD00.00-P-2000-06FR

19

Calibrate Active Brake Assist controller unit with vehicle diagnosis system.

Model 257, 290
with code 258 (Active Brake Assist System)



AD00.00-P-2000-06FR