2021 Chrysler 300 LD Fuse Box Diagram
The 2021 Chrysler 300 (LD) has 2 fuse boxes. Choose the one you’re looking at.
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Engine compartment fuse box (front PDC)
The 2021 300's underhood fuse box sits at the passenger-side front of the engine bay, alongside the jump-start terminals that stand in for the trunk-mounted battery. Release the latches and lift the lid to expose the fuses; the lid label shows the numbering used here.
The 2021 manual stops listing cavities 8, 22 and 24 (police and 6.2 l feeds) and keeps the 2020 wording elsewhere: ASD relay feeds on 34/35, engine controller on 37, HID headlamps on 15/16. Cartridges 7 and 23 remain police-only.
| No. | Function | Amp | Description |
|---|---|---|---|
| 2 | 40 AJCASE | Radiator cooling fan #1 | |
| 3 | 50 AJCASE | Electric power steering #1 (where fitted) | |
| 4 | 30 AJCASE | Starter motor | |
| 5 | 40 AJCASE | Anti-lock brakes | |
| 6 | 30 AJCASE | Anti-lock brakes, second feed | |
| 7 | Not used on the 300: the shared table lists police ignition-run/accessory feed #1 (20 A) | ||
| 8 | Not listed in the 2021 owner's manual (police and 6.2 l rows dropped) | ||
| 9 | 20 AMINI | All-wheel-drive module (AWD cars) | |
| 10 | 10 AMINI | Intrusion sensor module (where fitted) | |
| 11 | 20 AMINI | Horns | |
| 12 | 10 AMINI | Air-conditioning compressor clutch | |
| 13 | Spare | ||
| 14 | Spare | ||
| 15 | 20 AMINI | Left HID headlamp (where fitted) | |
| 16 | 20 AMINI | Right HID headlamp (where fitted) | |
| 18 | 50 AJCASE | Radiator cooling fan | |
| 19 | 50 AJCASE | Electric power steering #2 (where fitted) | |
| 20 | 30 AJCASE | Windshield wiper motor | |
| 21 | 30 AJCASE | Headlamp washers (where fitted) | |
| 22 | Not listed in the 2021 owner's manual (police and 6.2 l rows dropped) | ||
| 23 | Not used on the 300: the shared table lists police battery feed #1 (20 A) | ||
| 24 | Not listed in the 2021 owner's manual (police and 6.2 l rows dropped) | ||
| 28 | Spare | ||
| 29 | Not used on the 300: the shared table lists Challenger and police transmission feed (15 A); the 300 feeds its transmission from trunk cavity 26 | ||
| 30 | Spare | ||
| 31 | 25 AMINI | Engine control module | |
| 32 | Spare | ||
| 33 | Spare | ||
| 34 | 25 AMINI | Auto shutdown (ASD) relay feed #1 | |
| 35 | 20 AMINI | Auto shutdown (ASD) relay feed #2 | |
| 36 | 10 AMINI | Anti-lock brake module, steering column lock (where fitted) | |
| 37 | 10 AMINI | Engine controller | |
| 38 | 10 AMINI | Airbag module | |
| 39 | 10 AMINI | A/C clutch, electric power steering and vacuum pump (where fitted) | |
| 48 | 10 AMINI | AWD module, front axle disconnect (AWD cars) | |
| 49 | Spare | ||
| 50 | Spare | ||
| 51 | 20 AMINI | Vacuum pump (where fitted) | |
| 52 | 5 AMINI | Adaptive cruise control radar (where fitted) | |
| 53 | Spare |
Trunk fuse box (rear PDC)
Open the trunk of a 2021 300, lift the floor panel over the spare wheel and look right of the battery: the lidded block there is the rear power distribution center, which also feeds the engine-bay box. The cavity label is on the underside of the lid.
The 2021 manual drops the SRT fuel-pump cartridges 40–41 and the active-suspension fuse 48 from its list, calls 36 the active exhaust valve and describes 12 as a selectable fuse for the cigar lighter or accessory outlet.
| No. | Function | Amp | Description |
|---|---|---|---|
| 2 | 60 AJCASE | Feed #1 to the engine-compartment fuse box (the battery lives in the trunk) | |
| 3 | Spare | ||
| 4 | 60 AJCASE | Feed #2 to the engine-compartment fuse box | |
| 5 | 30 AJCASE | Power sunroof (where fitted) | |
| 6 | 40 AJCASE | Exterior lighting #1 | |
| 7 | 40 AJCASE | Exterior lighting #2 | |
| 8 | 30 AJCASE | Interior lighting | |
| 9 | 40 AJCASE | Power door locks | |
| 10 | 30 AJCASE | Driver door module | |
| 11 | 30 AJCASE | Passenger door module | |
| 12 | 20 AMINI | Selectable fuse: cigar lighter or instrument-panel outlet, rear USB ports (where fitted) | |
| 15 | 40 AJCASE | HVAC blower motor | |
| 16 | Not used on the 300: the shared table lists police left spotlight (20 A) | ||
| 17 | Not used on the 300: the shared table lists police right spotlight (20 A) | ||
| 18 | Not used on the 300: the shared table lists police network interface module (30 A) | ||
| 19 | Spare | ||
| 20 | Spare | ||
| 21 | 30 AJCASE | Fuel pump | |
| 22 | 5 AMINI | Cyber security gateway module | |
| 23 | 10 AMINI | Fuel filler door (where fitted), diagnostic port | |
| 24 | 10 AMINI | Integrated centre stack (radio and climate controls) | |
| 25 | 10 AMINI | Tyre pressure monitoring | |
| 26 | 15 AMINI | Transmission control module | |
| 27 | 25 AMINI | Audio amplifier (where fitted) | |
| 31 | 25 AMINI | Power seats (where fitted): a 25 A circuit breaker | |
| 32 | 15 AMINI | HVAC module, instrument cluster | |
| 33 | 15 AMINI | Ignition switch, RF hub, steering column lock and remote start (where fitted) | |
| 34 | 10 AMINI | Steering column module, clock | |
| 35 | 5 AMINI | Intelligent battery sensor | |
| 36 | 15 AMINI | Active exhaust valve (where fitted) | |
| 37 | 20 AMINI | Radio | |
| 38 | 20 AMINI | Media hub, console accessory power outlet | |
| 40 | Not listed in the 2021 owner's manual (police and 6.2 l rows dropped) | ||
| 41 | Not listed in the 2021 owner's manual (police and 6.2 l rows dropped) | ||
| 42 | 30 AJCASE | Rear window defroster | |
| 43 | 20 AMINI | Rear heated seats, heated steering wheel (where fitted) | |
| 44 | 10 AMINI | Park assist, blind-spot monitoring, rear camera | |
| 45 | 15 AMINI | Instrument cluster, rear-view mirror, lane-departure camera | |
| 46 | Spare | ||
| 47 | 10 AMINI | Adaptive front lighting, daytime running lamps (where fitted) | |
| 48 | Not listed in the 2021 owner's manual (police and 6.2 l rows dropped) | ||
| 49 | Spare | ||
| 50 | Spare | ||
| 51 | 20 AMINI | Front heated and ventilated seats (where fitted) | |
| 52 | 10 AMINI | Heated and cooled cupholders, rear heated-seat switches | |
| 53 | 10 AMINI | HVAC module, cabin temperature sensor | |
| 54 | Spare | ||
| 55 | Spare | ||
| 56 | Spare | ||
| 57 | Spare | ||
| 58 | 10 AMINI | Airbag module | |
| 59 | Not used on the 300: the shared table lists police adjustable pedals (20 A) | ||
| 60 | Spare | ||
| 61 | Spare | ||
| 62 | Spare | ||
| 63 | Spare | ||
| 64 | 25 AMINI | Rear power windows: a 25 A circuit breaker | |
| 65 | 10 AMINI | Airbag module, second feed | |
| 66 | Spare | ||
| 67 | 10 AMINI | Rain and light sensor, sunroof, inside mirror | |
| 68 | 10 AMINI | Rear USB timer, rear sunshade (where fitted) | |
| 69 | Spare | ||
| 70 | Spare |