2021 Maserati Quattroporte Fuses and Fuse Box | How to check and fix

The 2021 Maserati Quattroporte has a full electrical system that is protected by a network of fuses that are kept in a special fuse box. The placement of the fuse box is planned to protect different electrical parts of the car. A fuse breaks the circuit when an overload or short circuit happens, which is a very important part of keeping electricity safe. To find and fix problems that might be caused by fuses, start by reading the owner’s guidebook. It will tell you exactly where each fuse is located and what it does. Once the fuse has been found, check it by looking at the metal strip inside it. A broken or melted strip means the fuse has blown. If a fuse blows, it needs to be replaced with a new one that has the same amperage value. It’s important to take care of switch problems right away because they can stop important systems like lights, power windows, and other electrical parts from working. If your worries don’t go away or if multiple fuses keep blowing, you should get skilled help to find and fix the underlying electrical problems. The 2021 Maserati Quattroporte is more reliable and runs better when the fuse box is checked and maintained regularly.

2023 Maserati Quattroporte Review, Specs, Price, And Mileage (Brochure)

If a Fuse Blows

Used Fuses Characteristics
When an electrical device is not functioning, check that the corresponding fuse is in proper working order (intact).
A Fuse intact
B Fuse blown

The vehicle mainly uses mini-and maxi fuses with blade engagement. Besides these, there are other types of fuses provided with holes for attaching to the cable connection terminals. For the replacement of these fuses contact the Service Network.
Replace the faulty fuse with a new one featuring the same rating, by using appropriate forceps added in the integrated power module and inside the cover of the rear power distribution center.
The color identifies the value of the fuses in amperes which is also reported on them. The table shows the match between the color and amperage of mini and maxi fuses.

Type
Mini Fuse	Maxi Fuse
Beige – 5	Yellow – 20
Brown – 7,5	Green – 30
Red – 10	Orange – 40
Blue – 15	Red – 50
Yellow – 20	Blue – 60
White – 25	–
Green – 30	–

CAUTION!

• Never replace a blown fuse with anything other than a new and suitable fuse (same rating).
• After replacing a fuse, if the fault recurs, contact an Authorized Maserati Dealer.

Position of Fuses
The fuses are located in three parts of the vehicle, namely:

• inside the integrated power module, on the right-hand side of the engine compartment;
• inside the rear power distribution center, behind the battery, on the right-hand side of the boot compartment;
• on the fuse and relay box located in a covered area, under the dashboard’s left side.

Integrated Power Module

• To access the module it is necessary to lift the hood (see “Hood Operation” in the section “Before Starting”).
• To access the fuses remove the module cover unhooking the lateral locks as shown in the picture. To recognize the reference number of the fuses in the table below, see the diagram inside the cover just removed.

The table points out the position as featured in the cover, and the type and function of the fuses included in the integrated power module.

CAUTION!

• After replacement, refit the protective cover of the module.
• If you need to wash the engine compartment, do not direct the water for too long directly on the module.

Ref.	Type	Function
2	Maxi – 50A	Secondary air pump relay input (3.8 V8 – Engine only)
4	Maxi – 30A	Starter motor relay input and starter solenoid supply
5	Maxi – 40A	ABS-ESP pump feed
6	Maxi – 30A	AWD module (AWD version only)
8	Maxi – 40A	ABS-ESP valve feed
11	Mini – 20A	Horn relay input
12	Mini – 10A	AC compressor feed relay input
14	Mini – 7,5A	Alarm siren
15	Mini – 10A	Washer heated nozzles relay input
16	Maxi – 10A	Enable cooling fan relay input and enable cooling oil pump relay input
20	Maxi – 30A	Wiper ON/OFF relay output and wiper LOW/HI
28	Mini – 7,5A	Drive Assist System Module (DASM)
29	Mini – 10A	PCM module – Starter solenoid relay coil – Voltage Body & Dash, PTC re-lay coil
30	Mini – 5A	ORC- Airbag module
31	Mini – 5A	ABS-ESP module
32	Mini – 5A	SSCU, AWD module (AWD version only), EPS and AQS
33	Mini – 10A	HDLP Head- lights – AFLS
34	Mini – 15A	Primary load to engine harness LH side
35	Mini – 15A	Primary load to engine harness RH side
36	Mini – 30A	PCM module primary load
37	Mini – 15A	Engine secondary load
38	Mini – 15A	Lambda sensor
39	Mini – 7,5A	Flow meters, tank leakage, canister, exhaust by-pass valve relay coil, and air shutter
49	Mini – 10A	Pedal brake switch – TCM module
50	Mini – 15A	+30 PCM module
51	Mini – 30A	Fuel pump high-speed relay input
52	Mini – 5A	Starter solenoid signal for PCM and voltage stabilizer
53	Mini – 10A	AWD module (AWD version only)

Rear Power Distribution Center

• To access the center it is necessary to lift the ground coverage of the trunk compartment (see chapter “Tool Kit” in this section) and remove the storage box.
• To access the fuses, release the cover latch shown in the picture.
• Press the release latch and lift the lid from this side.
• Push the lid toward the right side to release the indicated latches on the unit. To recognize the reference number of the fuses in the table below, see the diagram inside the cover just removed.

The table points out the position as featured in the cover, and the type and function of the fuses in the rear area distribution control unit.

2023 Maserati Quattroporte Review, Specs, Price, And Mileage (Brochure)

Ref.	Type	Function
2	Maxi – 40A	BCM module
3	Maxi – 40A	BCM module
4	Maxi – 30A	BCM module
5	Maxi – 30A	BCM module
6	Maxi – 20A	Sunroof module
7	Maxi – 30A	Driver door module
8	Maxi – 30A	Passenger door module
9	Maxi – 40A	Start&Stop: voltage sta- stabilizer, dashboard
10	Maxi – 40A	Start&Stop: voltage stabilizer, body
11	Maxi – 40A	“High Premium” stereo amplifier unit
	Maxi – 20A	“Premium” stereo amplifier unit (1)
15	Maxi – 40A	HVAC front blower relay coil
16	Maxi – 40A	Rear window defrost relay coil (HVAC module)
17	Maxi – 30A	Rear LH door module
18	Maxi – 30A	Rear RH door module
20	Maxi – 20A	“Premium” stereo amplifier unit (2)
21	Maxi – 40A	Fuel Pump (3.8 V8 – Engine only)
22	Mini – 7,5A	Rear HVAC module
23	Mini – 10A	Fuel door relay and RF Hub module
24	Mini – 10A	ITM module, ceiling light unit (front and rear), rain/lights sensor
25	Mini – 20A	Inverter
27	Mini – 20A	LH rear seat movement
31	Mini – 25A	LH front seat movement
33	Mini – 20A	RH rear seat movement
34	Mini – 20A	Soft Door Close latch
35	Mini – 20A	Rear doors sunshade
36	Mini – 10A	Transmission lever, Navtrak, ASBM control suspension, and Hands-Free access module
37	Mini – 25A	Power lift- gate/boot lid module
38	Mini – 25A	RH front seat movement, passenger front seat movement from the rear
40	Maxi – 20A	Boot power outlet
43	Mini – 20A	Seat passenger heater module
46	Mini – 5A	Rear camera
47	Mini – 5A	Navtrak
48	Mini – 5A	Surround-view
49	Mini – 10A	Internal temperature sensor, internal mirror, and HALF
51	Mini – 25A	Rear seat and steering wheel heater module
53	Mini – 25A	Rear seat ven- ted module
54	Mini – 7,5A	Blind Spot module
56	Mini – 7,5A	Blower front HVAC coil relay
57	Mini – 7,5A	Blower rear HVAC coil relay
59	Mini – 10A	SDC module, transmission lever, ASBM, rear tunnel stack switch
60	Mini – 10A	SDC module
61	Mini – 25A	Front console power outlet and cigar lighter
62	Mini – 7,5A	Front HVAC module
63	Mini – 20A	Blower rear HVAC
64	Mini – 10A	Wi-fi, rear HVAC module
65	Mini – 10A	Intelligent battery sensor
66	Mini – 10A	Wi-fi
67	Mini – 7,5A	USB charge outlet, sunroof
68	Mini – 20A	Rear sunshade module
69	Mini – 25A	Rear console power outlet and cigar lighter
70	Mini – 10A	Front HVAC module, Parking Aid Module (PAM)

Fuse Box under the Dashboard
This box is located in an internal area that can be accessed only by removing the glove compartment on the dashboard’s left side. Considering the complexity of this operation, we recommend having the fuses replaced by the Service Network.
The table points out the position as featured in the figure, the type, and the function of the fuses in the box under the dashboard.

Ref.	Type	Function
1	Mini – 7,5A	Cluster module, CSS, SGW, and DSRC (Ja-pan version only)
2	Mini – 15A	Cluster module, clock
3	Mini – 10A	DSRC and DTV system (Japan version only)
4	Mini – 5A	E-call
5	Mini – 7,5A	Security Gateway
6	Mini – 25A	Radio
7	Mini – 10A	Column software module, CSS, USB auxiliary port
8	Mini – 10A	Start & Stop switch, diagnostic outlet

 

FAQs

Useful Link:

View Full PDF: Maserati Quattroporte 2021 User Manual | Auto User Guide

2023 Maserati Quattroporte Review, Specs, Price, And Mileage (Brochure)

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