Dodge Ram 3500 2021 Fuse Box Info
Fuse box location:
Fuse Box Diagram | Layout
Engine compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | - | Spare |
| 2 | 60A | ABS Pump Motor (HD Only) |
| 3 | 60A | Rad Fan – If Equipped |
| 4 | 50A | 400W Inverter – If Equipped |
| 5 | 40A | Compressor for Air Suspension – If Equipped |
| 6 | 40A | Steering Torque Overlay Module (STOM) |
| 7 | 40A | Starter Solenoid |
| 8 | 20A | NOX Sensor – If Equipped |
| 9 | 30A | Diesel Fuel Heater – If Equipped |
| 9 | 30A | Gas / Brake Vacuum Pump – If Equipped |
| 10 | 40A | CBC #2 / Ext Lights |
| 11 | 40A | Brake System Module (ECU and Valves) |
| 12 | 40A | CBC #3 / Pwr Locks |
| 13 | 40A | Blower Motor |
| 14 | 40A | CBC #4 / Ext Lights |
| 15 | 30A | Power Side Steps – If Equipped |
| 16 | 30A | Smart-Bar Module – If Equipped |
| 17 | 30A | Winch Control Module – If Equipped |
| 19 | 30A | Diesel SCR Feed – If Equipped |
| 20 | 30A | Passenger Door Module |
| 21 | 30A | Drive Train Control Module |
| 22 | 20A | Gas / ECM – If Equipped |
| 22 | 20A | Diesel PCM – If Equipped |
| 23 | 30A | CBC #1 / Int Light |
| 24 | 30A | Driver Door Module |
| 25 | 30A | Front Wiper |
| 26 | - | Spare |
| 27 | - | Spare |
| 28 | 20A | Trailer Tow Backup Lights – If Equipped |
| 29 | 20A | Trailer Tow Parking Lights – If Equipped |
| 30 | 30A | Trailer Tow Receptacle / Trailer Tow (Separate E-Brake) / Trailer Tow |
| 31 | - | Spare |
| 32 | - | Spare |
| 33 | 20A | Trans Control Module – If Equipped |
| 34 | 30A | Vehicle System Interface Module #2 – If Equipped |
| 35 | 30A | Sunroof – If Equipped |
| 36 | 30A | Electric Back Light – If Equipped |
| 37 | 30A | Diesel Frame / Fuel Heater #2 – If Equipped |
| 38 | 30A | Integrated Trailer Brake Module – If Equipped |
| 39 | - | Spare |
| 40 | 10A | Ventilated Seats – If Equipped |
| 41 | 10A | Active Grille Shutter / Active Air Dam – If Equipped |
| 42 | 20A | Horn |
| 43 | 15A | Heated Steering Wheel – If Equipped |
| 44 | 10A | Diagnostic Port |
| 46 | 10A | Upfitters Relay Coil – If Equipped |
| 47 | - | Spare |
| 48 | - | Spare |
| 49 | 10A | IP Cluster / CSG |
| 50 | 20A | Air Suspension Control Module – If Equipped |
| 51 | 10A | Ignition Node Module / Keyless Ignition Node Module, Radio Frequency Hub Module / Electric Steering Column Lock - If Equipped |
| 52 | 5A | Battery Sensor |
| 53 | 20A | Trailer Tow – Left Turn/Stop Lights - If Equipped |
| 54 | 20A | Non Memory Adjustable Pedals - If Equipped |
| 55 | - | Spare |
| 56 | 10A | Fuel Vapor Blocker Valve - If Equipped |
| 57 | 20A | TCM / PCM / Solenoid Trans Pressure SW (RFE Trans Only) – If Equipped |
| 58 | 10A | Bed Lighting (LED) – If Equipped |
| 60 | - | Spare |
| 61 | 10A | NH3 Sensor / PM Sensor – If Equipped |
| 62 | 10A | Air Conditioning Clutch |
| 63 | 20A | Ignition Coils / CAPS |
| 64 | 25A | Fuel Injectors / Powertrain Control Module / SRV – If Equipped |
| 65 | 10A | MOD Inverter (Wake Up) / Power Port / USB IP / WCPM – If Equipped |
| 66 | 10A | Sunroof / USB Rear – If Equipped |
| 67 | 10A | UCI Port / USB Front |
| 68 | 10A | AEB RACAM HTR – If Equipped |
| 69 | 15A | SCR Module 12 Volt – If Equipped |
| 70 | 30A | Fuel Pump Motor / K09 RLY Coil Feed – If Equipped |
| 71 | 25A | Amplifier / Active Noise Cancelation – If Equipped |
| 72 | - | Spare |
| 73 | 20A | Fuel Transfer Pump – If Equipped |
| 74 | 10A | Backup Alarm – If Equipped |
| 75 | 10A | ATMM / Coil-SCR Module RLY – If Equipped |
| 76 | 10A | Electronic Stability Control - If Equipped |
| 77 | 10A | Drivetrain Control Module / Front Axle Disconnect Module / TCM/ STOM |
| 78 | 15A | Engine Control Module / Powertrain Control Module / Electric Power Steering (DS 1500 Only) |
| 78 | 15A | Engine Control Module / Powertrain Control Module / AEB RACM MOD / Feed To AUX PDC Relay Coils/ HRLS |
| 79 | 15A | ID / Clearance Lights |
| 80 | 10A | Overhead Console / Assist / 911 – If Equipped |
| 81 | 20A | Trailer Tow Right Turn / Stop Lights - If Equipped |
| 82 | 10A | Steering Column Control Module / Cruise Control |
| 83 | - | Spare |
| 84 | 15A | ASBM / HVAC / ICS / Rear Heated Seat Switches |
| 85 | 10A | Airbag Module |
| 86 | 10A | Airbag Module |
| 87 | 10A | Air Suspension / ITBM / Steering Column Control Module / MOD Gateway CAN-C Trailer TPM |
| 88 | 15A | Instrument Panel Cluster |
| 90/91 | 20A |
Power Outlet / Batt Power Outlet / Acc |
| 92 | - | Spare |
| 93 | - | Spare |
| 94 | 10A | Shift-By-Wire / Transfer Case Switch / Module TPM Trailer / Module Gateway Can-C Trailer TPM |
| 95 | 10A | Rearview Camera / Park Assist / CHMSL Camera / Blind Spot Sensor / Surround View Camera |
| 96 | 10A | Trailer Camera – If Equipped |
| 97 | 20A | Front Heated Seat Passenger – If Equipped |
| 98 | 20A | Front Heated Seat Driver – If Equipped |
| 99 | 10A | HVAC / In-Car Temperature Sensor / CSG MOD |
| 100 | 10A | Upfitters Box Feed – If Equipped |
| 101 | 20A | Rear Heated Seat Right - If Equipped |
| 102 | 20A | Rear Heated Seat Left / Run RLY #3 Coil - If Equipped |
| 103 | 10A | HeadLamp AFLS - If Equipped |
| 104 | 20A | UCI Port / USB Rear |
