Remove/Install Engine Mount And Differential Lock Control Unit - AR54.21-P-0080ME

Model 167 

as of model year 2021 

With Code 466 (Active engine mount) 

Model 167 

as of model year 2021 

With Code 467 (Electronic locking differential) 

Fig 1: Engine Mount And Differential Lock Control Unit Components Location - Model 167 As Of Model Year 2021 With Code 466; 467 (Shown On Model 167.1)

Courtesy of MERCEDES-BENZ USA

Shown on model 167.1 

Courtesy of MERCEDES-BENZ USA

Shown on model 167.9 

	Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove load compartment trim (1) at right.	Model 167.3 as of model year 2021 with code 466 (Active engine mount) Model 167.3	AR68.30-P-1185MEC
		as of model year 2021 with code 467 (Electronic locking differential)
		Model 167.9 as of model year 2021 with code 466 (Active engine mount) with code M036 (Maybach version)	AR68.30-P-1185MEM
		Model 167.9 as of model year 2021 with code 467 (Electronic locking differential) with code M036 (Maybach version)
		Model 167.9 as of model year 2021 with code 466 (Active engine mount) except code M036 (Maybach version) Model 167.9 as of model year 2021 with code 467 (Electronic locking differential) except code M036 (Maybach version)	AR68.30-P-1185MEX
		Model 167.1 as of model year 2021 with code 466 (Active engine mount) Model 167.1 as of model year 2021 with code 467 (Electronic locking differential)	AR68.30-P-4800ME
2	Remove screws (4) and remove strut (5).	Model 167.9 as of model year 2021 with code 466 (Active engine mount) except code M036 (Maybach version) Model 167.9 as of model year 2021 with code 467 (Electronic locking differential) except code M036 (Maybach version)
		Screw, rear left/right strut to body	*BA64.20-P-1003-01G
3	Remove stowage tray (6).	Model 167.9 as of model year 2021 with code 466 (Active engine mount) except code M036 (Maybach version) Model 167.9 as of model year 2021 with code 467 (Electronic locking differential) except code M036 (Maybach version)
4	Remove dampings.
5	Release and disconnect electrical connector (2).
6.1	Remove nuts (3).	Model 167.1/3 as of model year 2021 with code 466 (Active engine mount) Model 167.1/3 as of model year 2021 with code 467 (Electronic locking differential)
6.2	Remove nut (7).	Model 167.9 as of model year 2021 with code 466 (Active engine mount) Model 167.9 as of model year 2021 with code 467 (Electronic locking differential)
7	Detach control unit of engine mount and differential lock (N187) from holder and remove.
8	Install in the reverse order.
	Finishing activity
9	Commission control unit of engine mount and differential lock (N187).	When replacing control unit of engine mount and differential lock (N187).
			AD00.00-P-2000-06ME