Wiring diagram for fully electric seat adjustment (ESA) - PE91.29-U-2004-99RAA

Code	Designation	Position
A0	Color code key	40 L
F4	Load compartment fuse and relay box	18 A
F4f27	Fuse 27	19 A
F4f28	Fuse 28	16 A
K24/1	Driver seat adjustment comfort relay	13 A
K24/2	Front passenger seat adjustment comfort relay	22 A
M27/1	Seat fore/aft adjustment motor, driver	7 L
M27/2	Rear seat height adjustment motor, driver	3 L
M27/3	Front seat height adjustment motor, driver	5 L
M27/5	Backrest angle adjustment motor, driver	1 L
M28/1	Seat fore/aft adjustment motor, front passenger	33 L
M28/2	Rear seat height adjustment motor, front passenger	29 L
M28/3	Front seat height adjustment motor, front passenger	31 L
M28/5	Backrest angle adjustment motor, front passenger	27 L
M28/5x1	Backrest angle adjustment motor, front passenger connector	27 H
N10/8	Rear SAM control unit	22 L
S22	Driver seat adjustment switch	4 A
S22	Driver seat adjustment switch	10 A
S23	Front passenger seat adjustment switch	28 A
S23	Front passenger seat adjustment switch	34 A
U12	Valid for left-hand drive vehicles	10 H
U12	Valid for left-hand drive vehicles	25 H
U13	Valid for right-hand drive vehicles	10 J
U13	Valid for right-hand drive vehicles	25 J
W15/1	Ground (right footwell)	10 L
W15/1	Ground (right footwell)	26 L
W15/2	Ground (left footwell)	10 L
W15/2	Ground (left footwell)	25 L
X54/31	Driver seat external power feed separation point	6 H
X54/32	Front passenger seat external power feed separation point	32 H
X55/3	Left front seat contacting strip	10 H
X55/4	Right front seat contacting strip	20 H
Z61/16	Convenience relay circuit 30 connector sleeve	23 E
Z61/17	Convenience relay circuit 31 connector sleeve	10 E

Fig 1: Fully Electric Seat Adjustment Wiring Diagram (1 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 2: Fully Electric Seat Adjustment Wiring Diagram (2 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 3: Fully Electric Seat Adjustment Wiring Diagram (3 Of 3)

Courtesy of MERCEDES-BENZ USA