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Home >> Mercedes Benz >> 2009 >> E550 Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Electrical System -- Basic Knowledge -- E550 (211.072) >> Basic Knowledge >> Fuse assignment of fuse and relay box in left engine compartment - GF54.15-P-1256-03TC

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

Driver-side fuse and relay module 

Fig 1: Fuse Assignment Of Fuse And Relay Box In Left Engine Compartment
G07506114Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

IMPORTANT The S relay (AIRmatic relay (K67)) and T (cutoff relay for interruptible loads (K75)) are only clipped on to the driver-side SAM control unit with fuse and relay module.

Fuse Clamping device Cable ID (cable fused) Fused function Rating in amperes (A)
f43 87 1.5 RDBU Valid for engine 113: 
Fused via circuit 87 M1iconnector sleeve (Z7/38):
  • ME-SFI [ME] control unit (N3/10)
15
1.5 BKYE Valid for engines 271, 272: 
  • ME-SFI [ME] control unit (N3/10)
2.5 RDBU Valid for engines 629, 642: 
Fused via circuit 87 connector sleeve M1i:
  • CDI control unit (N3/9)
  • Driver-side SAM control unit with fuse and relay module (N10/1)
  • Rear SAM control unit with fuse and relay module (N10/2)
1.5 RDBU Valid for engines 646, 647: 
  • CDI control unit (N3/9)
0.75 RDBU
  • Rear SAM control unit with fuse and relay module (N10/2)
f44 87 2.5 RDBU Valid for engines 646, 647: 
  • CDI control unit (N3/9)
15
RDGN 1.5 Valid for engines 271, 272: 
  • ME-SFI [ME] control unit (N3/10)
1.5 BK Valid for M271 CNG: 
  • Cyl. 1 gas injection valve (Y106/1)
  • Cyl. 2 gas injection valve (Y106/2)
  • Cyl. 3 gas injection valve (Y106/3)
  • Cyl. 4 gas injection valve (Y106/4)
f45 87 0.75 RDGN Valid for code (489) AIRmatic (semi-active air suspension): 
  • AIRmatic with ADS control unit (N51)

Valid for code (489) All-round level control system: 
  • Rear axle level control system control unit (N97)
7.5
0.5 RDBU Valid for code (423) Automatic five-speed transmission (NAG): 
  • Electronic selector lever module control unit (N15/5)

Valid for code (424) Sequentronic automated manual transmission (SEQ): 
  • Gear recognition switch (S16/10)
f46 87 0.75 RDBU Valid for code (423) Automatic five-speed transmission (NAG): 
  • ETC [EGS] control unit (N15/3)

Valid for code (424) Sequentronic automated manual transmission (SEQ): 
  • Automated manual transmission control unit (N15/6)

Valid for code (427) 7-speed automatic transmission: 
  • VGS electric control unit (Y3/8)
7.5
f47 87 0.75 RDBU
  • ESP, SPS [PML] and BAS control unit (N47-5)
5
f48 15 0.5 BKRD
  • Restraint systems control unit (N2/7/)
7.5
f49 15R 0.5 PKBK
  • Restraint systems control unit (N2/7/)
7.5
0.5 PKBU
  • Front passenger seat occupied and child seat recognition sensor (B48)
  • NECK-PRO head restraints relay (K41/1)
7.5
f50 15R 0.75 BKVT Valid for code (852) Complete portable CTEL preinstallation on dome: 
  • Portable CTEL separation point (X39/37)

Valid for code (498) Japanese version: 
  • VICS power supply separation point (X137/1)
5
f51 15 - - 5
f52 15 0.75 BKBU
  • Rotary light switch (S1)

Fused via circuit 15 connector sleeve (Z3/11):
  • Instrument cluster (A1)
  • Glove compartment illumination with switch (E13/2)
7.5
15 0,5 BKVT Valid for code (614) bi-xenon headlamp unit: 
  • Headlamp range adjustment control unit (N71)
7.5
f53a - - - -
f53b 30 1.0 YE
  • Fanfare horn relay (N10/1kO)
15
f54a 15R 1.5 RDVT Cigarette lighter alternatively fused via terminal 15R:
  • Cutoff relay for interruptible loads (K75)
15
f54b 30 1.5 RDVT Cigarette lighter alternatively fused via terminal 30
  • Cutoff relay for interruptible loads (K75)
15
f55 30 0.5 RDBK
0.5 RD
Valid for code (381) MB phone "Standard" in console on right side of tower: 
  • Telephone handset (A34)
  • Bluetooth module connector (X39/57)
7.5
0.75 RD Valid for code (852) Complete portable CTEL preinstallation on dome: 
  • Portable CTEL separation point (X39/37)
f56 15R 4.0 RD
  • Wiper motor (M6/1)
40
f57 87 RDGN 2.5 Valid for engines 646, 647: 
  • CDI control unit (N3/9)
25
RDGN 1.5 Valid for engines 271, 272: 
Fused via circuit 87 M2iconnector sleeve (Z7/39):
0.75 RDGN
  • AAC with integrated control additional fan motor (M4/7)
RDGN 1.5
  • ME-SFI [ME] control unit (N3/10)
  • Purge control valve (Y58/1)
  • PremAir sensor (B11/15)
0.75 RDGN Valid for code (494) USA version: 
  • Activated charcoal canister shutoff valve (Y58/4)
f58 15 1.5 BKYE Valid for engine 113: 
Fused via circuit 15 connector sleeve (Z3/29):
  • Ignition coil, cylinder 1 (T1/1)
  • Cylinder 2 ignition coil (T1/2)
  • Cylinder 3 ignition coil (T1/3)
  • Cylinder 4 ignition coil (T1/4)
  • Cylinder 5 ignition coil (T1/5)
  • Ignition coil, cylinder 6 (T1/6)
  • Ignition coil, cylinder 7 (T1/7)
  • Ignition coil, cylinder 8 (T1/8)
15
f59 50 -
  • Starter relay (N10/1kL)
15
f60 30 2.5 RDBU Valid for E 55 AMG: 
  • Oil cooler fan (M4/1)
10
f61 30 4.0 RDWH Valid for engine 113 with secondary air injection, except E 55 AMG: 
  • Electric air pump (M33)
40
f62 30 - Valid for code (424) Sequentronic automated manual transmission (SEQ): 
  • SEQ pump control relay (N10/1kM)
30
f63 30 2.5 RD Valid for code (424) Sequentronic automated manual transmission (SEQ): 
  • Automated manual transmission control unit (N15/6)

Valid for engine 113: 
  • Circuit 87 relay, engine (N10/1kl)
15
f64 30 0.75 RDBU
  • Rotary light switch (S1)
7.5
2.5 RDWH Fused via terminal 30 connector sleeve (Z7/1):
  • Instrument cluster (A1)
  • Steering column module (N80)
  • AAC [KLA] control and operating module (N22)

Valid for code (581) comfort automatic air conditioning: 
  • Comfort AAC [K-KLA]) control and operating unit (N22/7)
f65 30 2.5 RD Fused via terminal 30 connector sleeve (Z7/58):
  • EIS [EZS] control unit (N73)
  • Electric steering lock control unit (N26/5)
20
f66 15 1.5 BK
  • Right front lamp unit (E2)
  • Left front lamp unit (E1)

Valid for code (614) bi-xenon headlamp unit: 
  • HRA power module (E2n3)
  • HRA power module (E1n3)
7.5
f67 30 RDGN 0.5
  • Stop light switch (S9/1)
10