Remove/install front bumper

AR88.20-S-2000E

Remove/install front bumper

12.03.2020

Model

447, 448

Modification notes

12.03.2020

Work procedure revised

The whole document

1

Expansion rivet

2

Cover

Shown on model 447 except code XM0 (Facelift)

3

Quick-release coupling

7

Expansion rivet

10

Service flap

4

Left support brace

8

Fender liner

11

Bolts

5

Quick-release coupling

9

Screw

12

Expansion rivet

6

Right support brace

Shown on the right side of the vehicle on model 447.8 with code XM0 (facelift)

18

Damping material

19

Electrical connector

20

Screw

Shown on model 447.8 with code EZ7 (Active Parking Assist), with code JS1 (360° camera) and except code XM0 (facelift)

13

Bolts

14

Front bumper

15

Electrical plug

Shown on the left side of the vehicle on model 447.6 with code L16 (halogen front fog lamp) and except code XM0 (facelift)

14

Front bumper

16

Electrical connector

17

Front fog lamp

Shown with engine 780.702

14

Front bumper

21

Socket flap

22

Electrical wiring harness

23

Electrical connector

24

Electrical connector

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.Model 447 with engine 780

AS00.00-Z-0035-01A

Topical note

General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment

Model 447 with engine 780

AH00.00-Z-0300-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A



Remove

1

Open socket flap (21).

Model 447 with engine 780.702

2

Switch off ignition and store transmitter key outside of transmission range (min. 2  m).

3

Remove trim (2).

 To do this, remove expansion rivets (1).

 Clip remover

*452589016300

4

Open quick-release fastener (3).

5

Unclip catch hook (arrow A) and remove left support (4).

6

Open quick-release fastener (5).

7

Remove catch hook (arrow B) and remove right support (6).

8

Remove expansion rivets (7) from left and right fender liner (8).

 Clip remover

*452589016300

9

Remove screw (9) in the left and right fender liner (8).

10

Open service flap (10) in left and right fender liner (8).

11

Remove damping (18) on both sides of the vehicle.

12.1

Remove screws (11) on both sides of the vehicle.

Model 447
except code XM0 (Facelift)
Model 448

12.2

Remove screw (20) on both sides of the vehicle.

Model 447
with code XM0 (Facelift)

13

Remove expansion rivets (12) from left and right fender liner (8).

 Clip remover

*452589016300

14

Unscrew bolts (13).

15.1

Remove front bumper (14).

Model 447 with engine 274, 622, 651, 654, 780.701
with code XM0 (Facelift)
except code BA3 (Active Brake Assist System)
except code ET4 (Active Distance Assist DISTRONIC)
except code EZ7 (Active Parking Assist)
except code JP2 (Driving Assistance package)
except code JS1 (360° camera)
except code L16 (Fog lamps, halogen)
Model 447
except code EZ7 (Active Parking Assist)
except code JA6 (Active Brake Assist System)
except code JS1 (360° camera)
except code L16 (Fog lamps, halogen)
except code XM0 (Facelift)
Model 448
except code EZ7 (Active Parking Assist)
except code JS1 (360° camera)
except code L16 (Fog lamps, halogen)

 Helper required.

15.2

Remove front bumper (14) until the electrical plugs (15, 16, 19) are accessible.

Model 447, 448
with code EZ7 (Active Parking Assist)
Model 447.6/7, 448
with code L16 (Fog lamps, halogen)
Model 447.8, 448.8
with code JS1 (360° camera)
Model 447
with code BA3 (Active Brake Assist System)
with code XM0 (Facelift)
Model 447
with code ET4 (Active Distance Assist DISTRONIC)
with code XM0 (Facelift)
Model 447
with code JA6 (Active Brake Assist System)
Model 447
with code JP2 (Driving Assistance package)
with code XM0 (Facelift)

 The number of electrical connectors varies depending on equipment installed.
Helper required.

16

Remove electrical wiring harness (22) from front bumper (14).

Model 447 with engine 780.702

 To do this, disconnect electrical connectors (23, 24) and remove retaining clamps of electrical wiring harness (22).

 Helper required.

 Clip remover

*452589016300

17

Remove front bumper (14).

Model 447, 448
with code EZ7 (Active Parking Assist)
Model 447.6/7, 448
with code L16 (Fog lamps, halogen)
Model 447.8, 448.8
with code JS1 (360° camera)
Model 447
with code BA3 (Active Brake Assist System)
with code XM0 (Facelift)
Model 447
with code ET4 (Active Distance Assist DISTRONIC)
with code XM0 (Facelift)
Model 447
with code JA6 (Active Brake Assist System)
Model 447
with code JP2 (Driving Assistance package)
with code XM0 (Facelift)

 To do this, disconnect electrical plugs (15, 16, 19). The number of electrical connectors varies depending on equipment installed.
Helper required.

18

Disassemble front bumper (14).

If required.

Model 447.8
with code XM0 (Facelift)

AR88.20-S-2050EB

Model 447.6/7, 448.7
Model 447.8
except code PS2 (AMG line)
except code XM0 (Facelift)
Model 448.8
except code PS2 (AMG line)

AR88.20-S-2050E

Model 447.8
with code PS2 (AMG line)
except code XM0 (Facelift)
Model 448.8
with code PS2 (AMG line)

AR88.20-S-2050EA



Check

19

Check all expansion rivets (1, 7, 12) for damage.

If damage is present:



Replace damaged expansion rivets (1, 7, 12).



Install

20

Assemble front bumper (14).

If required.

Model 447.8
with code XM0 (Facelift)

AR88.20-S-2050EB

Model 447.6/7, 448.7
Model 447.8
except code PS2 (AMG line)
except code XM0 (Facelift)
Model 448.8
except code PS2 (AMG line)

AR88.20-S-2050E

Model 447.8
with code PS2 (AMG line)
except code XM0 (Facelift)
Model 448.8
with code PS2 (AMG line)

AR88.20-S-2050EA

21

Install electrical wiring harness (22) at front bumper (14).

Model 447 with engine 780.702

 To do this, position front bumper (14) on vehicle, install retaining clamps of electrical wiring harness (22), and connect electrical connectors (23, 24).

 Helper required.
Check retaining clamps of electrical wiring harness (22) for damage.

If damage is present:



Replace damaged retaining clamps of electrical wiring harness (22).

22

Position front bumper (14) on the vehicle and connect electrical plugs (15, 16, 19).

Model 447, 448
with code EZ7 (Active Parking Assist)
Model 447.6/7, 448
with code L16 (Fog lamps, halogen)
Model 447.8, 448.8
with code JS1 (360° camera)
Model 447
with code BA3 (Active Brake Assist System)
with code XM0 (Facelift)
Model 447
with code ET4 (Active Distance Assist DISTRONIC)
with code XM0 (Facelift)
Model 447
with code JA6 (Active Brake Assist System)
Model 447
with code JP2 (Driving Assistance package)
with code XM0 (Facelift)

 The number of electrical connectors varies depending on equipment installed.
Helper required.

23

Install front bumper (14).

 Helper required.

If lower engine compartment lining is installed:



Insert lower guides of front bumper (14) correctly.

24

Install left support (4) and lock catch hook (arrow A).

25

Close quick-release fastener (3).

26

Install right support (6) and lock catch hook (arrow B).

27

Close quick-release fastener (5).

28

Screw screw (9) into the left and right fender liner (8).

29

Adjust front bumper (14).

AR88.20-S-2001E

30.1

Screw in screws (11) on both sides of the vehicle.

Model 447
except code XM0 (Facelift)
Model 448

30.2

Screw in screw (20) on both sides of the vehicle.

Model 447
with code XM0 (Facelift)

31

Insert damping (18) on both sides of the vehicle.

32

Close service flap (10) in the left and right fender liner (8).

33

Install expansion rivets (7) on the left and right fender liner (8).

34

Install expansion rivets (12) on the left and right fender liner (8).

35

Screw in screws (13).

36

Position trim (2) on the installation location and install expansion rivets (1).



Check

37

Check function of charger feed socket.

Model 447 with engine 780.702

 When doing so, also check function of charging interruption button.

38

Check function of socket flap lock (21).

Model 447 with engine 780.702

39

Adjust front fog lamps (17).

Model 447.6/7
with code L16 (Fog lamps, halogen)
Model 448.7

AR82.10-S-1132E

40

Perform function test of the "Active Parking Assist" system.

Model 447, 448
with code EZ7 (Active Parking Assist)

41

Perform function test of the collision warning system radar sensor with diagnostic system.

Model 447
with code JA6 (Active Brake Assist System)



Connect STAR DIAGNOSIS and read out fault memory

AD00.00-S-2000-04E

Calibrate

42

Calibrate front 360° camera with vehicle diagnosis system.

Model 447.8, 448.8
with code JS1 (360° camera)



Connect STAR DIAGNOSIS and read out fault memory

AD00.00-S-2000-04E

43

Calibrate DISTRONIC sensor with diagnostic system.

Model 447
with code BA3 (Active Brake Assist System)
with code XM0 (Facelift)
Model 447
with code ET4 (Active Distance Assist DISTRONIC)
with code XM0 (Facelift)
Model 447
with code JP2 (Driving Assistance package)
with code XM0 (Facelift)



Connect STAR DIAGNOSIS and read out fault memory

AD00.00-S-2000-04E



000 588 17 21 00 Adjusting device

WS30.00-P-0006B