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Fuse assignment of fuse and relay box in left engine compartment - GF54.15-P-1256-03CW

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Fuse and relay box in left of engine compartment 

Fig 1: Identifying Fuse And Relay Assignments Of Box In Left Engine Compartment
G00515857Courtesy of MERCEDES-BENZ USA
Fuse Terminal Cable ID (fused line) Fused function Fuse rating in amperes (A)
f1 30 2.5 RDGN
  • Electronic Stability Program control unit (N30/4)
 25
f2 30 2.5 RDWH
  • Left front door control unit (/)N69/1
 30
f3 30 2.5 RDGY
  • Right front door control unit (/)N69/2
 30
f4 15 0.75 PKWH Valid for gasoline engine: 
  • Fuel pump control unit (N118)
 7.5
f5 15 0.75 PKRD
  • Rear SAM control unit with fuse and relay module (/)N10/2
 7.5
f6 15   Valid for engine 271:  10
0.75 PKRD
  • ME-SFI [ME] control unit (/)N3/10
  Valid for engine 272: 
1.0 PKRD
  • ME-SFI [ME] control unit (/)N3/10
  Valid for engines 642, 646: 
0.75 PKRD
  • CDI control unit (N3/9)
f7 15 2.5 VTWH Fused via terminal 50 relay, starter (N10/1kM):
  • Starter (M1)
 20
f8 15R 0.75 PKWH
  • Supplemental restraint system control unit (/)N2/10
 7.5
f9 15R 1.5 PKBU Valid for code (510) Audio 20 incl. CD changer 
or for code (511) Audio 50 APS incl. DVD changer 
or for code (512) COMAND APS incl. DVD changer 
or for code (523) MB Audio 20 radio 
or for code (525) MB Audio 50 APS radio 
or with code (527) COMAND APS (with navigation): 
  • Glove compartment socket (X58/31)
 15
f10 15R 2.5 RD
  • Wiper motor (M6/1)
 30
f11 30g 0.5 RDBU
  • Audio/COMAND display (/)A40/8
 7.5
0.75 RD
  • Audio/COMAND control panel (/)A40/9
f12 30g 0.75 RDVT
  • Automatic air conditioning control and operating unit (N22/7)
 7.5
  Valid for code (220) PARKTRONIC system (PTS) 
or for code (483) ADVANCED AGILITY package 
or for code (540) Electrical roller blind for rear window 
or for code (873) Left and right front seat heater: 
0.75 RDGN
  • Upper control panel control unit (/)N72/1
f13 30g 0.75 RDBU
  • Steering column module control unit (N80)
 7.5
f14 30g 0.5 RDBN
  • Electronic Stability Program control unit (N30/4)
 7.5
f15 30g 0.75 RDBN
  • Supplemental restraint system control unit (/)N2/10
 7.5
f16 30g 0.75 RDGN
  • Diagnostic connector (/)X11/4
 5
0.5 RDYE Valid for code (386) Preinstallation for telephone "Handy", UPCI system: 
  • Mobile phone electrical connector (X39/37)
0.75 RDBU Valid for transmission 722: 
  • Electronic selector lever module control unit (/)N15/5
f17 30g 2.5 RDBU Valid for code (413) Panoramic glass sunroof with top sliding sunroof: 
  • Panoramic sliding roof control module (A98)

Valid for code (414) Electrical glass tilting/sliding roof: 
  • Overhead control panel control unit (N70)
 30
f18 30 0.5 RDGY
  • Exterior lights switch (S1)
 7.5
f19 30 2.5 RD
  • Electronic ignition lock control unit (N73)
 20
f20 30 6.0 RDGY
  • Electronic Stability Program control unit (N30/4)
 40
f21 15R 0.75 PKBU
  • Stop lamp switch (S9/1)
 7.5
0.5 PKYE
  • Glove compartment lamp switch (S17/9)
0.5 PKBK Valid for code (U18) Automatic child seat recognition (ACSR): 
  • Front passenger seat occupied recognition and ACSR (B48)
0.5 PKBK Valid without code (494) USA version and without code (U18) Automatic child seat recognition (ACSR): 
  • Front passenger seat occupied recognition (B41/1)
f22 87M 1.0 BKRD
  • Combustion engine fan motor and air conditioning with integrated control (M4/7)
 15
1.0 BKRD Valid for engine 271 with code (835) South Korea version: 
  • Circuit 87 M2e connector sleeve (Z7/36)
1.5 BKRD Valid for engine 271 without code (835) South Korea version: 
  • ME-SFI [ME] control unit (/)N3/10
1.0 BKRD
  • Purge control valve (Y58/1)
1.0 BKRD Valid for engine 272 with code (494) USA version: 
  • Circuit 87 M2e connector sleeve (Z7/36)
1.0 BKRD Valid for engine 272 without code (494) USA version: 
  • Purge control valve (Y58/1)
2.5 BKRD Valid for engine 642: 
  • CDI control unit (N3/9)
2.5 RDVT
  • Vent line heater element (/)R39/1
2.5 BKRD Valid for engine 646: 
  • CDI control unit (N3/9)
2.5 RDVT
  • Terminal 87 connector sleeve (Z7/5)
f23 87M 1.5 BKRD Valid for diesel engine: 
  • Rear SAM control unit with fuse and relay module (/)N10/2
 20
2.5 RDBU
  • CDI control unit (N3/9)
2.5 RDBU
  • Terminal 87 connector sleeve (Z7/5)
2.5 GYBK Valid for engine 271: 
  • Terminal 87 M1e connector sleeve (Z7/35)
2.5 RDBU Valid for engine 272: 
  • Circuit 87 M1i connector sleeve (Z7/38)
f24 87M 2.5 RDBK Valid for engine 272: 
  • Terminal 87 M1e connector sleeve (Z7/35)
 15
2.5 RDBK Valid for diesel engine: 
  • Terminal 87 connector sleeve (Z7/5)
2.5 RDGY Valid for engine 646: 
  • CDI control unit (N3/9)
f25 87M 1.5 RDBU Valid for engines 271, 272: 
  • ME-SFI [ME] control unit (/)N3/10
 15
1.5 RDWH Valid for diesel engine: 
  • Oxygen sensor upstream of catalytic converter (G3/2)
f26 30g 2.5 RD Valid for code (510) Audio 20 incl. CD changer or for code (523) MB Audio 20 radio: 
  • Radio (A2)

Valid for code (511) Audio 50 APS incl. DVD changer or for code (525) MB Audio 50 APS radio: 
  • Radio with auto pilot system (A2/56)

Valid for code (512) COMAND APS incl. DVD changer or with code (527) COMAND APS (with navigation): 
  • COMAND controller unit (40/3)
 20
f27 30z 0.5 RD
  • Electric steering lock control unit (N26/5)
  • Electronic ignition lock control unit (N73)
 7.5
0.75 RDWH Valid for diesel engine: 
  • CDI control unit (N3/9)

Valid for gasoline engine: 
  • ME-SFI [ME] control unit (/)N3/10
f28 30 0.75 RDYE
  • Instrument cluster (A1)
 7.5
f29 15 1.5 BKBU Valid for code (614) bi-xenon headlamp unit: 
or for code (615) Bi-xenon headlamp unit with integrated curve illumination or for code (622) Intelligent Light System (right-hand traffic): 
  • Right front lamp unit (E2)
 10
1.0 BKBU Valid without code (614) Bi-xenon headlamp unit and without code (615) Bi-xenon headlamp unit with integrated curve illumination and without code (622) Intelligent Light System (right-hand traffic): 
  • Right front lamp unit (E2)
f30 15 1.5 BKBU Valid for code (614) bi-xenon headlamp unit: 
or for code (615) Bi-xenon headlamp unit with integrated curve illumination or for code (622) Intelligent Light System (right-hand traffic): 
  • Left front lamp unit (E1)
 10
1.0 BKBU Valid without code (614) Bi-xenon headlamp unit and without code (615) Bi-xenon headlamp unit with integrated curve illumination and without code (622) Intelligent Light System (right-hand traffic): 
  • Left front lamp unit (E1)
0.75 BKBU Valid for engine 642: 
  • Electrical connector for interior harness and engine wiring harness (X26)
f31A 15R 1.5 BKWH Fused via fanfare horns relay (N10/1kO):
  • Left fanfare horn (H2)
  • Right fanfare horn (H2/1)
 15
f31B 30 1.5 BKWH Fused via fanfare horns relay (N10/1kO):
  • Left fanfare horn (H2)
  • Right fanfare horn (H2/1)
 15
f32 30 4.0 RDWH Valid for engine 272: 
Fused via secondary air injection relay (N10/1kP):
  • Electric air pump (M33)
 40
f33 87F 0.75 RDGN Valid for transmission 722.6: 
  • Electronic transmission control unit (N15/3)
 10
1.0 RDBK Valid for transmission 722.9: 
  • Fully integrated transmission control controller unit (Y3/8)
f34 87F -
  • Spare
 -
f35 87F -
  • Spare
 -
f36 87M 0.75 RDBU Valid for code (233) DISTRONIC PLUS 
  • DISTRONIC electric controller unit (A89)
 7.5
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