Wiring Schematic, front central operating unit - PE82.00-P-2060-99SAA

Code:	Designation:	Position:
A0	Explanation of color codes	23 L
A40/9	Front central operating unit	3 E
A40/9	Front central operating unit	4 A
A40/9	Front central operating unit	12 A
A40/9r1	Volume control	5 D
A40/9s1	Disc/radio quick select button	2 B
A40/9s10	Freely programmable button	1 E
A40/9s11	Turn/push control	3 C
A40/9s2	Button "Back"	2 B
A40/9s3	Hazard warning system button	3 B
A40/9s4	Multicontour seat quick select button	3 B
A40/9s5	Telephone/navigation quick select button	4 B
A40/9s6	Button "ON"	5 D
A40/9s7	Mute button	5 E
A40/9s8	Transmission modes button	1 D
A40/9s9	Head restraint folding button	1 D
A40/9x1	Front central operating unit connector	6 E
N10/2	Rear SAM control module with fuse and relay module	7 L
N72/1	Upper control panel control module	10 L
S148	Center console button group	17 A
W18	Ground (left front seat crossmember)	8 H
X18	Cockpit wiring harness and FFS [RBA] connector	9 H
X30/35	Telematics CAN voltage distributor connector	14 L

Fig 1: Front Central Operating Unit - Wiring Schematic (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Front Central Operating Unit - Wiring Schematic (2 Of 2)

Courtesy of MERCEDES-BENZ USA