Remove/Install Transfer Case Control Unit - AR28.19-P-1003GQ

Model 166 (except 166.006), 292 with transmission 722.9 

Shown on 166.057 

Fig 1: Transfer Case Control Unit Components Location - Model 166 (Except 166.006) With Transmission 722.9 (Shown On 166.057)

Courtesy of MERCEDES-BENZ USA

	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Read out coding of transfer case control unit (N15/7) using diagnostic system
			AD00.00-P-2000-04A
		Only when replacing the transfer case control unit (N15/7) and when it can still be read out with the diagnostic system.
2	Remove battery		AR54.10-P-0005GZ
3	Unclip wiring harness from bracket for transfer case control unit (N15/7)
4	Detach transfer case control unit (N157) with bracket and place to one side
5	Disconnect electrical connector from transfer case control unit (N157)
6	Remove transfer case control unit (N157)	If necessary, detach the bracket from the transfer case control unit (N15/7).
7	Install in the reverse order
8	Code transfer case control unit (N157)	Only when installing a new transfer case control unit (N15/7).