Remove/install front bumper - AR88.20-P-2000NKX

MODEL 156 

Fig 1: Front Bumper Remove/Install Components (1 Of 4)

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Fig 2: Front Bumper Remove/Install Components (2 Of 4)

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Fig 3: Front Bumper Remove/Install Components (3 Of 4)

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Fig 4: Front Bumper Remove/Install Components (4 Of 4)

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	Remove/install
1	Disconnect battery ground line	Model 156 with code U60 (Active Bonnet (Pedestrian protection))
			AR54.10-P-0003NKB
2	Lift vehicle on vehicle lift		AR00.60-P-1000AK
3	Remove screws (2)
4	Unclip paneling on left and right wheel arch (5)
5	Remove expansion rivet (4) from left and right fender liner (6)
6	Detach left and right fender liner (6) to side
7	Turn electrical connectors (8) on front bumper (1) 45°, unhook and disconnect
8	Remove bolts (7)
9	Pull outside temperature sensor (9) out of front bumper (1)	Do not disconnect electrical connector from outside temperature sensor.
10	Disconnect electrical connector (11, 17) from left front fog lamp (16) and right front fog lamp (10)	Model 156 with code U37 (Front fog lamps)
11	Disconnect electrical connectors (13, 14) from pedestrian protection sensors (12)	Model 156 with code U60 (Active Bonnet (Pedestrian protection))
	Notes on pedestrian protection sensor		AH91.60-P-0001-01A
	Check
12	Check pedestrian protections sensors (12)	Model 156 with code U60 (Active Bonnet (Pedestrian protection))
	Notes on pedestrian protection sensor		AH91.60-P-0001-01A
		Check freely visible points for damage of any kind (cracks, holes, breakovers, etc.) when installed. ↓ If damage is visible, always replace pedestrian sensor (12).
			AR91.60-P-0950NKA
13	Remove screw/bolts (19)
14	Pull radiator grille (15) out of brackets (20) with extraction hooks (22)	Extraction hook	Fig 6
15	Remove front bumper (1)
	General information on the impact absorber		AH88.20-P-1000-01A
		If the outer side bracket on the lamp unit (arrow) is damaged, it is not necessary to replace the lamp unit (21). This bracket (arrow) is only required for production.
16	Install in the reverse order
	Check
17	Check gaps on front bumper (1), adjust if necessary	Gap dimension	*BE60.00-P-1001-01AA
		Feeler gauge	Figure

TEST AND ADJUSTMENT VALUES FOR GAP DIMENSIONS

Number	Designation				Model 156
BE60.00-P-1001-01AA	Gap dimension	Engine hood to fender	Dimension "A"	mm	3, 5 (± 1)
		Engine hood to headlamp	Dimension "B"	mm	3 (+1, 5/-1)
		Engine hood to bumper	Dimension "C"	mm	3, 5 (± 1)
		Fender to headlamp	Dimension "D"	mm	3 (± 1, 5)
		Bumper to headlamp (circumferential)	Dimension "E"	mm	3 (+1, 5/-2)
		Reinforcement to engine hood (exterior)	Dimension "F"	mm	-
		Fender to A-pillar	Dimension "G"	mm	3 (± 1)
			Picture		AR60.00-P-0700-01NKX

Fig 5: Identifying Feeler Gauge (129 589 03 21 00)

Courtesy of MERCEDES-BENZ USA

Fig 6: Identifying Extraction Hook (140 589 02 33 00)

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