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Assignment Of Rear Fuse And Relay Module - GF54.15-P-1256-30RF

Model 205, 253 

Illustration shows "small" variant 

Fig 1: Rear Fuse And Relay Module (Small Variant) - Model 205
G10133637Courtesy of MERCEDES-BENZ USA
Slot Fuse Identification Circuit Line ID (line fused) Fused component Rating in amperes (A)
400 Electrical fuse 400 (K40/5f400) 87 1.5 RDWH Valid for CODE U77 (BlueTEC (SCR) diesel exhaust treatment)): 
AdBlue® control unit (N118/5)
25
401 Electrical fuse 401 (K40/5f401) 87 1.5 RDGN Valid for CODE U77 (BlueTEC (SCR) diesel exhaust treatment)): 
AdBlue® control unit (N118/5)
15
      1.5 RDYE Valid for CODE U77 (BlueTEC (SCR) diesel exhaust treatment)): 
AdBlue® control unit (N118/5)
 
402 Electrical fuse 402 (K40/5f402) 87 1.5 RD Valid for CODE U77 (BlueTEC (SCR) diesel exhaust treatment)): 
AdBlue® control unit (N118/5)
20
403 Electrical fuse 403 (K40/5f403) 87 2.5 RDGN Valid except CODE 222 (Electrically adjustable right front seat) and except CODE 242 (Electrically adjustable front passenger seat with memory function): 
Front passenger seat partially electric seat adjustment switch (S23/1)
30
404 Electrical fuse 404 (K40/5f404) 87 2.5 RDGN Valid except CODE 221 (Electrically adjustable left driver seat) and except CODE 275 (Memory package): 
Driver seat partially electric seat adjustment switch (S22/1)
30
405 Electrical fuse 405 (K40/5f405) 87 - Spare -
406 Electrical fuse 406 (K40/5f406) 30 2.5 RD Left front door control unit (N69/1) 30
407 Electrical fuse 407 (K40/5f407) 30 - Spare -
408 Electrical fuse 408 (K40/5f408) 30 2.5 RD Valid for model 205.0/1/2, 253: 
Right rear door control unit (N69/4)
30
409 Electrical fuse 409 (K40/5f409) 30 - Spare -
410 Electrical fuse 410 (K40/5f410) 30 0.5 RD Valid for CODE 228 (Stationary heater) and CODE B24 (Remote control for stationary heater): 
Stationary heater radio remote control receiver (A6/1)
5
411 Electrical fuse 411 (K40/5f411) 30 4.0 RD Valid for CODE 299 (PRE-SAFE® system): 
Left front reversible emergency tensioning retractor (A76)
30
412 Electrical fuse 412 (K40/5f412) 30 0.5 RD Valid for model 205.012/212: 
Battery management system control unit (N82/2)
7.5
      1.0 RD Valid for model 205.047/147/247: 
Battery management system control unit (N82/2)
 
413 Electrical fuse 413 (K40/5f413) 30g 0.5 RDBK Valid for CODE 881 (Remote trunk closing): 
Trunk lid control unit (N121)
5
414 Electrical fuse 414 (K40/5f414) 30g 0.5 RDWH Valid for CODE 865 (TV tuner) or CODE 537 (Digital radio (DAB)) or CODE 536 (SIRIUS satellite radio): 
Tuner unit (A90/4)
5
415 Electrical fuse 415 (K40/5f415) 30g 0.5 RD Valid for CODE 218 (Reversing camera) or CODE 501 (360° camera): 
Camera cover control unit (N42)
5
      0.5 RDYE Valid for CODE P21 (Air quality package): 
Perfume atomizer generator (N59)
 
416 Electrical fuse 416 (K40/5f416) 30g 0.5 RD Valid for CODE 386 (Comfort telephony): 
Cellular telephone system antenna amplifier/compensator (A28/15) Mobile phone contact plate (X237/1)
7.5
417 Electrical fuse 417 (K40/5f417) 30g 0.5 RD Valid for CODE 501 (360° camera): 
360° camera control unit (N148)
5
        Valid for CODE 218 (Reversing camera): 
Reversing camera (B84/3)
 
418 Electrical fuse 418 (K40/5f418) 30g 0.35 RDWH Valid for CODE 872 (Seat heater in rear): 
Rear seat heater control unit (N25/6)
5
419 Electrical fuse 419 (K40/5f419) 30g 0.5 RDWH Valid for CODE 222 (Electrically adjustable right front seat) or CODE 242 (Electrically adjustable front passenger seat with memory function) or CODE P65 (Seating comfort package): 
Front passenger seat lumbar support adjustment control unit (N32/24)
5
420 Electrical fuse 420 (K40/5f420) 30g 0.5 RDWH Valid for CODE 221 (Electrically adjustable left driver seat) or CODE 275 (Memory package) or CODE P65 (Seating comfort package): 
Driver seat lumbar support adjustment control unit (N32/23)
5
421 Electrical fuse 421 (K40/5f421) 87 - Spare -
422 Electrical fuse 422 (K40/5f422) 30g - Spare -
423 Electrical fuse 423 (K40/5f423) 30g 0.35 RD Valid for CODE 810 (Sound system): 
Sound system amplifier control unit (N40/3)
5
424 Electrical fuse 424 (K40/5f424) 30g 1.0 RDWH Valid for model 253 with CODE 489 (AIR BODY CONTROL): 
AIR BODY CONTROL Plus control unit (N51/8)
15
425 Electrical fuse 425 (K40/5f425) 87 - Spare -
426 - 430 Electrical fuse 426 (K40/5f426) - Electrical fuse 430 (K40/5f430) 30 - Spare -
431 Electrical fuse 431 (K40/5f431) 30 2.5 RD Valid for CODE 965 (Taxi/rental vehicle - preinstallation): 
Special-purpose vehicle multifunction control unit (N26/9)
25
432 Electrical fuse 432 (K40/5f432) 30 2.5 RDVT Valid for CODE 965 (Taxi/rental vehicle - preinstallation): 
Special-purpose vehicle multifunction control unit (N26/9)
25
433 Electrical fuse 433 (K40/5f433) 30 2.5 RDBU Valid for CODE 550 (Trailer hitch): 
Trailer recognition control unit (N28/1)
15
434 Electrical fuse 434 (K40/5f434) 30 1.5 GY Valid for CODE 550 (Trailer hitch): 
Trailer recognition control unit (N28/1)
15
      2.5 RDBU Valid for model 205.086/087/286/287: 
Electric parking brake control unit (N128)
30
435 Electrical fuse 435 (K40/5f435) 30 2.5 RD Valid for CODE 550 (Trailer hitch): 
Trailer recognition control unit (N28/1)
25
      2.5 RDWH Valid for model 205.086/087/286/287: 
Electronic differential control unit (N3/2)
 
436 Electrical fuse 436 (K40/5f436) 30 1.5 RDWH Valid for CODE 550 (Trailer hitch): 
Trailer recognition control unit (N28/1)
15
437 Electrical fuse 437 (K40/5f437) 30 2.5 RDYE Valid for CODE 550 (Trailer hitch): 
Trailer recognition control unit (N28/1)
25
438 Electrical fuse 438 (K40/5f438) 30 2.5 RD Valid for CODE U67 (230 volt socket in interior compartment): 
DC/AC converter control unit (N24/3)
30
439 Electrical fuse 439 (K40/5f439) 30 0.5 RDGN Valid for CODE 965 (Taxi/rental vehicle - preinstallation): 
Taximeter (A50)
Mirror taximeter (A50/1)
5
440 Electrical fuse 440 (K40/5f440) 30 2.5 RDWH Valid for CODE 872 (Seat heater in rear): 
Rear seat heater control unit (N25/6)
30
441 Electrical fuse 441 (K40/5f441) 30 - Spare -
442 Electrical fuse 442 (K40/5f442) 30 2.5 RD Fuel system control unit (N118) 25
443 Electrical fuse 443 (K40/5f443) 30 4.0 RDBK Valid for CODE 299 (PRE-SAFE® system): 
Right front reversible emergency tensioning retractor (A76/1)
30
444 Electrical fuse 444 (K40/5f444) 87 - Spare -
445 Electrical fuse 445 (K40/5f445) 87 1.5 RD Valid for model 205.2, 253: 
Luggage compartment socket (X58/12)
15
446 Electrical fuse 446 (K40/5f446) 87 1.5 RDBK Valid for CODE 301 (Smoker's package): 
Front cigarette lighter with ashtray illumination (R3)
15
        Valid except CODE 301 (Smoker's package) 
Vehicle interior power outlet (X58/1)
 
447 Electrical fuse 447 (K40/5f447) 87 1.5 RDBK Right rear center console socket 12V (X58/18) 15
448 Electrical fuse 448 (K40/5f448) 15 0.75 RD Valid for transmission 722, 725: 
Park pawl capacitor (C8)
10
449 Electrical fuse 449 (K40/5f449) 15 0.5 RDWH Valid for engine 626: 
Fuel filter heater relay (K40/5kZR1)
5
      0.5 PKRD Valid for model 205.086/087/286/287: 
Electric parking brake control unit (N128)
 
450 Electrical fuse 450 (K40/5f450) 15 0.35 BK Rear SAM control unit (N10/8) 5
451 Electrical fuse 451 (K40/5f451) 15 0.35 BNPK Fuel system control unit (N118) 5
      0.5 PKBU Valid for CODE U77 (BlueTEC (SCR) diesel exhaust treatment)): 
AdBlue® control unit (N118/5)
 
452 Electrical fuse 452 (K40/5f452) 15 0.5 RDBU Valid for CODE 22P (Lane package): 
Integrated outer right rear bumper radar sensor (B92/6)
Integrated outer left rear bumper radar sensor (B92/11)
5
        Valid for CODE 23P (Driving assistance package Plus): 
Center rear bumper radar sensor (B92/1)
Outer right rear bumper radar sensor (B92/7)
Outer left rear bumper radar sensor (B92/10)
 
453 Electrical fuse 453 (K40/5f453) 15 0.5 RDBU Valid for CODE 23P (Driving assistance package Plus): 
Left front bumper radar sensor (B92/3)
Right front bumper radar sensor (B29/4)
5
        Valid for CODE 258 (COLLISION PREVENTION ASSIST): 
COLLISION PREVENTION ASSIST controller unit (A90)
 
454 Electrical fuse 454 (K40/5f454) 15 1.0 RD Valid for transmission 722: 
Fully integrated transmission control unit (Y3/8n4)
7.5
      0.5 RDBU Valid for CODE U63 (Driving school package): 
Footwell illumination switch (S18/7)
Pedal operation monitor switch (S146)
5
      - Valid for model 253 with CODE U77 (BlueTEC (SCR) diesel exhaust treatment): 
AdBlue® control unit (N118/5)
5
455 Electrical fuse 455 (K40/5f455) 15 0.35 PKGN Valid for CODE U67 (230 volt socket in interior compartment): 
DC/AC converter control unit (N24/3)
5
456 Electrical fuse 456 (K40/5f456) 15 0.5 RDGN Valid for CODE 23P (Driving assistance package Plus): 
Front long-range radar sensor (B92)
5
        Valid for CODE 239 (DISTRONIC PLUS): 
DISTRONIC electric controller unit (A89)
 
457 Electrical fuse 457 (K40/5f457) 15 0.75 BK Valid for model 205.012/047/147/212/247: 
Power electronics control unit (N129/1)
5
      0.5 BK Valid for model 205.012/212: 
Battery management system control unit (N82/2)
 
      1.0 BK Valid for model 205.047/147/247: 
Battery management system control unit (N82/2)
 
      0.35 PKRD Valid for model 205.086/087/286/287: 
Electronic differential control unit (N3/2)
Active engine mounts control unit (N3/42)
 
458 Electrical fuse 458 (K40/5f458) 30 0.35 RD Valid for CODE 871 (HANDS-FREE ACCESS): 
Rear switching module (N38)
5
459 Electrical fuse 459 (K40/5f459) 30 0.5 RD Valid for model 205.047/147/247: 
Charger (N83/5)
5
        Valid for model 205.086/087/286/287: 
AMG suspension control unit (N3/43)
 
460 Electrical fuse 460 (K40/5f460) 30 0.75 RD Valid for CODE 889 (KEYLESS-GO) or CODE 893 (KEYLESS-GO start function): 
KEYLESS-GO control unit (N69/5)
10
461 Electrical fuse 461 (K40/5f461) 30 0.35 RD FM 1, AM, CL [ZV] and KEYLESS-GO antenna amplifier (A2/18) 5
462 Electrical fuse 462 (K40/5f462) 30 4.0 RD Valid for CODE 810 (Sound system): 
Sound system amplifier control unit (N40/3)
40
463 Electrical fuse 463 (K40/5f463) 87 2.5 RDBU Valid for model 205.0/1/2, 253: 
Rear window heater (R1) via rear window interference suppression capacitor (C3)
30
464 Electrical fuse 464 (K40/5f464) 30 4.0 RD Valid for CODE 881 (Remote trunk closing): 
Trunk lid control unit (N121)
40
        Valid for CODE 890 (EASY-PACK liftgate): 
Liftgate control unit (N121/1)
 
465 Electrical fuse 465 (K40/5f465) 30 4.0 RD Rear SAM control unit (N10/8) 40
466 Electrical fuse 466 (K40/5f466) 30 4.0 RD Rear SAM control unit (N10/8) 40
467 Electrical fuse 467 (K40/5f467) 30 4.0 BU Valid for engine 626: 
Fuel filter heater relay (K40/5kZR1)
40
Relay Identification Designation
S Vehicle interior circuit 15 relay (K40/5kS)
T Rear window heater relay (K40/5kT)
U 2nd seat row cupholder and sockets relay (K40/5kU)
V Valid for CODE U77 (BlueTEC (SCR) diesel exhaust treatment)): 
AdBlue® relay (K40/5kV)
X 1st seat row/trunk refrigerator box and sockets relay (K40/5kX)
Y Spare relay (K40/5kY)
ZR1 Valid for engine 626: 
Fuel filter heater relay (K40/5kZR1)
ZR2 Reserve relay (K40/5kZR2)
ZR3 Reserve relay (K40/5kZR3)
NOTE: The additional relays ZR1, ZR2 and ZR3 are plugged in at the side of the rear fuse and relay module depending on the equipment.

Illustration shows "medium" variant 

Fig 2: Rear Fuse And Relay Module (Medium Variant) - Model 205
G10133638Courtesy of MERCEDES-BENZ USA
Slot Fuse Identification Circuit Line ID (line fused) Fused component Rating in amperes (A)
400 Electrical fuse 400 (K40/5f400) 87 1.5 RDWH Valid for CODE U77 (BlueTEC (SCR) diesel exhaust treatment)): 
AdBlue® control unit (N118/5)
25
401 Electrical fuse 401 (K40/5f401) 87 1.5 RDGN Valid for CODE U77 (BlueTEC (SCR) diesel exhaust treatment)): 
AdBlue® control unit (N118/5)
15
      1.5 RDYE Valid for CODE U77 (BlueTEC (SCR) diesel exhaust treatment)): 
AdBlue® control unit (N118/5)
 
402 Electrical fuse 402 (K40/5f402) 87 1.5 RD Valid for CODE U77 (BlueTEC (SCR) diesel exhaust treatment)): 
AdBlue® control unit (N118/5)
20
403 Electrical fuse 403 (K40/5f403) 87 2.5 RDGN Valid except CODE 222 (Electrically adjustable right front seat) and except CODE 242 (Electrically adjustable front passenger seat with memory function): 
Front passenger seat partially electric seat adjustment switch (S23/1)
30
404 Electrical fuse 404 (K40/5f404) 87 2.5 RDGN Valid except CODE 221 (Electrically adjustable left driver seat) and except CODE 275 (Memory package): 
Driver seat partially electric seat adjustment switch (S22/1)
30
405 Electrical fuse 405 (K40/5f405) 87 - Spare -
406 Electrical fuse 406 (K40/5f406) 30 2.5 RD Left front door control unit (N69/1) 30
407 Electrical fuse 407 (K40/5f407) 30 - Spare -
408 Electrical fuse 408 (K40/5f408) 30 2.5 RD Valid for model 205.0/1/2, 253: 
Right rear door control unit (N69/4)
30
409 Electrical fuse 409 (K40/5f409) 30 - Spare -
410 Electrical fuse 410 (K40/5f410) 30 0.5 RD Valid for CODE 228 (Stationary heater) and CODE B24 (Remote control for stationary heater): 
Stationary heater radio remote control receiver (A6/1)
5
411 Electrical fuse 411 (K40/5f411) 30 4.0 RD Valid for CODE 299 (PRE-SAFE® system): 
Left front reversible emergency tensioning retractor (A76)
30
412 Electrical fuse 412 (K40/5f412) 30 0.5 RD Valid for model 205.012/212: 
Battery management system control unit (N82/2)
7.5
      1.0 RD Valid for model 205.047/147/247: 
Battery management system control unit (N82/2)
 
413 Electrical fuse 413 (K40/5f413) 30g 0.5 RDBK Valid for CODE 881 (Remote trunk closing): 
Trunk lid control unit (N121)
5
414 Electrical fuse 414 (K40/5f414) 30g 0.5 RDWH Valid for CODE 865 (TV tuner) or CODE 537 (Digital radio (DAB)) or CODE 536 (SIRIUS satellite radio): 
Tuner unit (A90/4)
5
415 Electrical fuse 415 (K40/5f415) 30g 0.5 RD Valid for CODE 218 (Reversing camera) or CODE 501 (360° camera): 
Camera cover control unit (N42)
5
      0.5 RDYE Valid for CODE P21 (Air quality package): 
Perfume atomizer generator (N59)
 
416 Electrical fuse 416 (K40/5f416) 30g 0.5 RD Valid for CODE 386 (Comfort telephony): 
Cellular telephone system antenna amplifier/compensator (A28/15) Mobile phone contact plate (X237/1)
7.5
417 Electrical fuse 417 (K40/5f417) 30g 0.5 RD Valid for CODE 501 (360° camera): 
360° camera control unit (N148)
5
        Valid for CODE 218 (Reversing camera): 
Reversing camera (B84/3)
 
418 Electrical fuse 418 (K40/5f418) 30g 0.35 RDWH Valid for CODE 872 (Seat heater in rear): 
Rear seat heater control unit (N25/6)
5
419 Electrical fuse 419 (K40/5f419) 30g 0.5 RDWH Valid for CODE 222 (Electrically adjustable right front seat) or CODE 242 (Electrically adjustable front passenger seat with memory function) or CODE P65 (Seating comfort package): 
Front passenger seat lumbar support adjustment control unit (N32/24)
5
420 Electrical fuse 420 (K40/5f420) 30g 0.5 RDWH Valid for CODE 221 (Electrically adjustable left driver seat) or CODE 275 (Memory package) or CODE P65 (Seating comfort package): 
Driver seat lumbar support adjustment control unit (N32/23)
5
421 Electrical fuse 421 (K40/5f421) 87 - Spare -
422 Electrical fuse 422 (K40/5f422) 30g - Spare -
423 Electrical fuse 423 (K40/5f423) 30g 0.35 RD Valid for CODE 810 (Sound system): 
Sound system amplifier control unit (N40/3)
5
424 Electrical fuse 424 (K40/5f424) 30g 1.0 RDWH Valid for model 253 with CODE 489 (AIR BODY CONTROL): 
AIR BODY CONTROL Plus control unit (N51/8)
15
425 Electrical fuse 425 (K40/5f425) 87 - Spare -
426 - 430 Electrical fuse 426 (K40/5f426) - Electrical fuse 430 (K40/5f430) 30 - Spare -
431 Electrical fuse 431 (K40/5f431) 30 2.5 RD Valid for CODE 965 (Taxi/rental vehicle - preinstallation): 
Special-purpose vehicle multifunction control unit (N26/9)
25
432 Electrical fuse 432 (K40/5f432) 30 2.5 RDVT Valid for CODE 965 (Taxi/rental vehicle - preinstallation): 
Special-purpose vehicle multifunction control unit (N26/9)
25
433 Electrical fuse 433 (K40/5f433) 30 2.5 RDBU Valid for CODE 550 (Trailer hitch): 
Trailer recognition control unit (N28/1)
15
434 Electrical fuse 434 (K40/5f434) 30 1.5 GY Valid for CODE 550 (Trailer hitch): 
Trailer recognition control unit (N28/1)
15
      2.5 RDBU Valid for model 205.086/087/286/287: 
Electric parking brake control unit (N128)
30
435 Electrical fuse 435 (K40/5f435) 30 2.5 RD Valid for CODE 550 (Trailer hitch): 
Trailer recognition control unit (N28/1)
25
      2.5 RDWH Valid for model 205.086/087/286/287: 
Electronic differential control unit (N3/2)
 
436 Electrical fuse 436 (K40/5f436) 30 1.5 RDWH Valid for CODE 550 (Trailer hitch): 
Trailer recognition control unit (N28/1)
15
437 Electrical fuse 437 (K40/5f437) 30 2.5 RDYE Valid for CODE 550 (Trailer hitch): 
Trailer recognition control unit (N28/1)
25
438 Electrical fuse 438 (K40/5f438) 30 2.5 RD Valid for CODE U67 (230 volt socket in interior compartment): 
DC/AC converter control unit (N24/3)
30
439 Electrical fuse 439 (K40/5f439) 30 0.5 RDGN Valid for CODE 965 (Taxi/rental vehicle - preinstallation): 
Taximeter (A50)
Mirror taximeter (A50/1)
5
440 Electrical fuse 440 (K40/5f440) 30 2.5 RDWH Valid for CODE 872 (Seat heater in rear): 
Rear seat heater control unit (N25/6)
30
441 Electrical fuse 441 (K40/5f441) 30 - Spare -
442 Electrical fuse 442 (K40/5f442) 30 2.5 RD Fuel system control unit (N118) 25
443 Electrical fuse 443 (K40/5f443) 30 4.0 RDBK Valid for CODE 299 (PRE-SAFE® system): 
Right front reversible emergency tensioning retractor (A76/1)
30
444 Electrical fuse 444 (K40/5f444) 87 - Spare -
445 Electrical fuse 445 (K40/5f445) 87 1.5 RD Valid for model 205.2, 253: 
Luggage compartment socket (X58/12)
15
446 Electrical fuse 446 (K40/5f446) 87 1.5 RDBK Valid for CODE 301 (Smoker's package): 
Front cigarette lighter with ashtray illumination (R3)
15
        Valid except CODE 301 (Smoker's package) 
Vehicle interior power outlet (X58/1)
 
447 Electrical fuse 447 (K40/5f447) 87 1.5 RDBK Right rear center console socket 12V (X58/18) 15
448 Electrical fuse 448 (K40/5f448) 15 0.75 RD Valid for transmission 722, 725: 
Park pawl capacitor (C8)
10
449 Electrical fuse 449 (K40/5f449) 15 0.5 RDWH Valid for engine 626: 
Fuel filter heater relay (K40/5kZR1)
5
      0.5 PKRD Valid for model 205.086/087/286/287: 
Electric parking brake control unit (N128)
 
450 Electrical fuse 450 (K40/5f450) 15 0.35 BK Rear SAM control unit (N10/8) 5
451 Electrical fuse 451 (K40/5f451) 15 0.35 BNPK Fuel system control unit (N118) 5
      0.5 PKBU Valid for CODE U77 (BlueTEC (SCR) diesel exhaust treatment)): 
AdBlue® control unit (N118/5)
 
452 Electrical fuse 452 (K40/5f452) 15 0.5 RDBU Valid for CODE 22P (Lane package): 
Integrated outer right rear bumper radar sensor (B92/6)
Integrated outer left rear bumper radar sensor (B92/11)
5
        Valid for CODE 23P (Driving assistance package Plus): 
Center rear bumper radar sensor (B92/1)
Outer right rear bumper radar sensor (B92/7)
Outer left rear bumper radar sensor (B92/10)
 
453 Electrical fuse 453 (K40/5f453) 15 0.5 RDBU Valid for CODE 23P (Driving assistance package Plus): 
Left front bumper radar sensor (B92/3)
Right front bumper radar sensor (B29/4)
5
        Valid for CODE 258 (COLLISION PREVENTION ASSIST): 
COLLISION PREVENTION ASSIST controller unit (A90)
 
454 Electrical fuse 454 (K40/5f454) 15 1.0 RD Valid for transmission 722: 
Fully integrated transmission control unit (Y3/8n4)
7.5
      0.5 RDBU Valid for CODE U63 (Driving school package): 
Footwell illumination switch (S18/7)
Pedal operation monitor switch (S146)
5
      - Valid for model 253 with CODE U77 (BlueTEC (SCR) diesel exhaust treatment): 
AdBlue® control unit (N118/5)
5
455 Electrical fuse 455 (K40/5f455) 15 0.35 PKGN Valid for CODE U67 (230 volt socket in interior compartment): 
DC/AC converter control unit (N24/3)
5
456 Electrical fuse 456 (K40/5f456) 15 0.5 RDGN Valid for CODE 23P (Driving assistance package Plus): 
Front long-range radar sensor (B92)
5
        Valid for CODE 239 (DISTRONIC PLUS): 
DISTRONIC electric controller unit (A89)
 
457 Electrical fuse 457 (K40/5f457) 15 0.75 BK Valid for model 205.012/047/147/212/247: 
Power electronics control unit (N129/1)
5
      0.5 BK Valid for model 205.012/212: 
Battery management system control unit (N82/2)
 
      1.0 BK Valid for model 205.047/147/247: 
Battery management system control unit (N82/2)
 
      0.35 PKRD Valid for model 205.086/087/286/287: 
Electronic differential control unit (N3/2)
Active engine mounts control unit (N3/42)
 
458 Electrical fuse 458 (K40/5f458) 30 0.35 RD Valid for CODE 871 (HANDS-FREE ACCESS): 
Rear switching module (N38)
5
459 Electrical fuse 459 (K40/5f459) 30 0.5 RD Valid for model 205.047/147/247: 
Charger (N83/5)
5
        Valid for model 205.086/087/286/287: 
AMG suspension control unit (N3/43)
 
460 Electrical fuse 460 (K40/5f460) 30 0.75 RD Valid for CODE 889 (KEYLESS-GO) or CODE 893 (KEYLESS-GO start function): 
KEYLESS-GO control unit (N69/5)
10
461 Electrical fuse 461 (K40/5f461) 30 0.35 RD FM 1, AM, CL [ZV] and KEYLESS-GO antenna amplifier (A2/18) 5
462 Electrical fuse 462 (K40/5f462) 30 4.0 RD Valid for CODE 810 (Sound system): 
Sound system amplifier control unit (N40/3)
40
463 Electrical fuse 463 (K40/5f463) 87 2.5 RDBU Valid for model 205.0/1/2, 253: 
Rear window heater (R1) via rear window interference suppression capacitor (C3)
30
464 Electrical fuse 464 (K40/5f464) 30 4.0 RD Valid for CODE 881 (Remote trunk closing): 
Trunk lid control unit (N121)
40
        Valid for CODE 890 (EASY-PACK liftgate): 
Liftgate control unit (N121/1)
 
465 Electrical fuse 465 (K40/5f465) 30 4.0 RD Rear SAM control unit (N10/8) 40
466 Electrical fuse 466 (K40/5f466) 30 4.0 RD Rear SAM control unit (N10/8) 40
467 Electrical fuse 467 (K40/5f467) 30 4.0 BU Valid for engine 626: 
Fuel filter heater relay (K40/5kZR1)
40
Relay Identification Designation
S Vehicle interior circuit 15 relay (K40/5kS)
T Rear window heater relay (K40/5kT)
U 2nd seat row cupholder and sockets relay (K40/5kU)
V Valid for CODE U77 (BlueTEC (SCR) diesel exhaust treatment)): 
AdBlue® relay (K40/5kV)
X 1st seat row/trunk refrigerator box and sockets relay (K40/5kX)
Y Spare relay (K40/5kY)
ZR1 Valid for engine 626: 
Fuel filter heater relay (K40/5kZR1)
ZR2 Reserve relay (K40/5kZR2)
ZR3 Reserve relay (K40/5kZR3)
NOTE: The additional relays ZR1, ZR2 and ZR3 are plugged in at the side of the rear fuse and relay module depending on the equipment.