POWER SEATS

(under right front footwell) w15/1
15r
Backrest sw (vor)
Backrest sw (zur)
Backrest sw vor
Backrest sw zur
Circuit 31 right footwell voltage distributor connector
Driver backrest angle adjustment motor (in driver's seat back)
Driver front seat height adjustment motor (ml-class: in driver's seat back) (gl-class: under driver's front seat)
Driver rear seat height adjustment motor (ml-class: in driver's seat back) (gl-class: under driver's front seat)
Driver seat adjustment switch
Driver seat fore/aft adjustment motor (ml-class: in driver's seat back) (gl-class: under driver's front seat)
Early production
Front passenger backrest angle adjustment motor (in front passenger's seat back)
Front passenger front seat height adjustment motor (under front passenger's seat)
Front passenger rear seat height adjustment motor (under front passenger's seat)
Front passenger seat adjustment switch
Front passenger seat fore/aft adjustment motor (under front passenger's seat)
Front raise/lower sw (hoch)
Front raise/lower sw (tief)
Fuse 30a
Hot w/ socket circuit 15r relay energized
Late production
Load compartment fuse & relay box (ml-class: right rear of cargo area) (gl-class: right side of cargo area)
Rear raise/lower sw (hoch)
Rear raise/lower sw (tief)
Seat fore/aft sw (vor)
Seat fore/aft sw (zur)
W15/2 (under left front footwell)

13a
Can-b h
Can-b l
Can-c h
Can-c l
Cockpit fuse box (behind right end of dash)
Coil
Computer data lines system
Diag
Faf
Fanfare horns & air bag clock spring contact (ml-class: inside steering wheel hub)
Fuse 10a
Fuse 5a
Gnd
Heater
Hot at all times
Hs (sih), seat ventilation & steering wheel heater control unit (under left seat of 2nd seat row)
Lhz
Load compartment fuse & relay box (ml-class: right rear of cargo area) (gl-class: right side of cargo area)
Multifunction steering wheel electronics unit (ml-class: inside steering wheel)
Nca
Ntc
Red
Sens temp coil
Steering column adjustment/steering steering wheel heater switch
Steering column module (ml-class: top of steering wheel) (gl-class: behind steering column)
Steering wheel heater
Steering wheel heater/fanfare horns electronics
W29/2 (behind right kick panel)
Wheel heater switch

+5v
Can-b h
Can-b l
Computer data lines system
Folding rear bench seat control unit (under left seat of 2nd seat row)
Fuse 40a
Hot at all times
Left backrest release unit (gl-class: inside left backrest of 3rd row seats)
Left folding backrest for front switch
Left folding backrest for rear switch
Left folding backrest motor (under left seat of 3rd seat row)
Load compartment fuse & relay box (ml-class: right rear of cargo area) (gl-class: right side of cargo area)
Nca
Right backrest release unit (gl-class: inside right backrest of 3rd row seats)
Right folding backrest for front switch
Right folding backrest for rear switch
Right folding backrest motor (under right seat of 3rd seat row)
W17/1 (under left rear seat)

(ml-class: top of steering column) (gl-class: behind steering wheel) steering column module
(under left front footwell) w15/2
4a1
4a2
Can-b h
Can-b l
Circuit 31 left footwell voltage distributor connector 1
Computer data lines system
Fuse 10a
Fuse 25a
Hot at all times
Hs (sih), seat ventilation & steering wheel heater control unit (under left seat of 2nd seat row)
Left front backrest heated cushion
Left front hs switch
Left front seat backrest ventilation motor group (in driver's seat back)
Left front seat contacting strip
Left front seat cushion ventilation motor group (under driver's seat cushion)
Left front seat heated cushion
Left front seat ventilation blower regulator (in driver's seat back)
Left front seat ventilation switch
Lhz
Load compartment fuse & relay box (ml-class: right rear of cargo area) (gl-class: right side of cargo area)
Ms3
Nca
Pnk
Red
Right front hs switch
Right front seat backrest ventilation motor group (in front passenger's seat back)
Right front seat cushion ventilation motor group (under front passenger's seat)
Right front seat ventilation blower regulator (in front passenger's seat back)
Right front seat ventilation switch
Sig
Upper control panel control module
W/ steering wheel heater
W17 (ml-class) (under right rear seat)
W17/1 (gl-class) (under left seat of 2nd row)

(ml-classs: under center console, on srs mounting bolt) (gl-class: under front of center console) w26
(under right rear corner of front passenger's seat) right rear wss sensor (weight sensing system)
Battery compartment prefuse box (ml-class: under right front seat) (gl-class: behind right front seat)
C83
Can-b h
Can-b l
Computer data lines system
Data
Fuse 5a
Hot at all times
Left front wss sensor (weight sensing system) (under left front corner of front passenger's seat)
Left rear wss sensor (weight sensing system) (under left rear corner of front passenger's seat)
Red
Right front wss sensor (weight sensing system) (under right front corner of front passenger's seat)
Wss control unit (weight sensing system) (ml-class: on right front seat frame) (gl-class: under front passenger's seat)

POWER SEATS – Mercedes-Benz ML550 2008 – SYSTEM WIRING DIAGRAMS