Main Under-Hood Fuse Box (B)

2015 Acura MDX BaseSECTION Main Under-Hood Fuse Box (B)
Fig 1: Main Under-Hood Fuse Box (B) Components Location
GHH317837Courtesy of HONDA, U.S.A., INC.
Main Under-Hood Fuse Box (B) Legend

Fuse Number Amps Component(s) or Circuit(s) Protected
B1 150 A No. B3-1, No. B3-2, No. B3-3, No. B3-4, No. B3-5, No. B3-6, No. B3-7, No. B3-8 (with headlight washer), No. B4, No. B5, No. B6, and No. B7 fuses in the main under-hood fuse box
B2 B2-1 60 A EPS control unit
B2-2 60 A No. E14, No. E15, No. E26, No. E27, and No. E28 (with AC inverter) fuses in the passenger's under-dash fuse/relay box
B2-3 60 A No. F18 fuse in the rear fuse/relay box
B2-4 60 A Not used
B2-5 30 A No. B10 fuse in the main under-hood fuse box, Rear blower motor (via rear blower motor relay)
B2-6 30 A No. B8, No. B9 fuses in the main under-hood fuse box
B2-7 20 A VSA modulator-control unit
B2-8 40 A VSA modulator-control unit
B3 B3-1 50 A No. D6, No. D7, and No. D9 fuses in the driver's under-dash fuse/relay box
B3-2 30 A Under-dash subrelay box
B3-3 60 A No. F1, No. F3, No. F4, No. F5, No. F7 (with second row seat heater), No. F14 (with SH-AWD), No. F15, and No. F16 fuses in the rear fuse/relay box
B3-4 50 A No. E1, No. E2, No. E3, No. E4 (with heated windshield wiper area), No. E5, No. E6, No. E7, No. E8, No. E9 (with power lumber support), No. E11 (with heated steering wheel), and No. E18 fuses in the passenger's under-dash fuse/relay box
B3-5 50 A No. D15, No. D16, No. D17, No. D18, No. D19, No. D29, No. D30, No. D31, and No. D32 fuses in the driver's under-dash fuse/relay box
B3-6 60 A No. C20, No. C22, No. C24, No. C25, No. C26 (via headlight relay), No. C27 (via headlight relay), and No. C31 fuses in the under-hood fuse/relay box, Headlight relay
B3-7 30 A Under-dash subrelay box
B3-8 30 A Headlight washer motor (via headlight washer relay) (with headlight washer), Headlight washer relay (with headlight washer)
B4 40 A No. C8, No. C9, No. C10, No. C11, No. C12, No. C13, No. C14, No. C15, and No. C16 fuses in the under-hood fuse/relay box
B5 40 A Front blower motor (via front blower motor relay)
B6 40 A Rear window defogger (via rear window defogger relay)
B7 30 A No. D25 fuse in the driver's under-dash fuse/relay box (via starter cut relay 1), Starter (via starter cut relay 1 and starter cut relay 2)
B8 20 A Brake lights (via brake light relay), Brake pedal position switch, High mount brake light (via brake light relay), Horn relay, Horn (HIGH) (via horn relay), Horn (LOW) (via horn relay), Security horn relay circuit (built into the relay control module), Security horn (via security horn relay circuit (built into the relay control module)), VSA modulator-control unit (via brake light relay)
B9 10 A Hazard warning switch (via driver's under-dash fuse/relay box), Headlights (turn signal), Driver's MICU (via driver's under-dash fuse/relay box at internal connection)
B10 7. 5 A 12 volt battery sensor
B11 - - - Not used
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.