Repair Fuses: 2018 Maserati Quattroporte Fuse Diagram Guide

Repair Fuses: 2018 Maserati Quattroporte Fuse Diagram Guide

When it comes to high-end luxury and performance cars, Maserati is one of the most prestigious and classy brands. The 2018 Maserati Quattroporte is the pinnacle of Italian artistry and dynamic driving performance. As both car fans and owners learn more about how this high-tech sedan works, it becomes very important to know how its fuses and relays work. In a car, these important parts keep the different electrical systems running smoothly by being like silent guards. Drivers can keep their cars running at their best and quickly fix problems if they understand how the complex fuse and relay system works. It powers important functions like lights and climate control and protects sensitive electronics.

2023 Maserati Quattroporte Specs, Price, Features, Mileage (Brochure)

Fuse Replacement

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

On the vehicle are mainly used with mini-and maxi-fuses with blade engagement.

Besides these, there are other types of fuse provided with holes for fixing 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 centre.

The colour identifies the value of the fuses in amperes which is also reported on them.

The table shows the match between the colour 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 the Service Network.

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 centre, behind the battery, on the right-hand side of the boot compartment

• on the fuse and relay box located in a covered area, behind the glove compartment on the dashboard’s left side.

Integrated Power Module

• To access the module, it is necessary to lift the hood (see “Open and Close the Hood” in the section “Before Starting”).
• To access the fuses remove the module cover unhooking the lateral locks as shown in the picture.

The table points out the position as featured in the figure, 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 (V8 – Gasoline only)
3	Maxi – 40A	PTC heater 1 (Diesel only)
4	Maxi – 30A	Starter motor relay input

Ref.	Type	Function
5	Maxi – 40A	ABS-ESP pump feed
6	Maxi – 30A	AWD module (Gasoline-AWD only)
7	Maxi – 40A	PTC heater 2 (Diesel only)

Ref.	Type	Function
8	Maxi – 40A	ABS-ESP valve feed
9	Mini – 25A	Urea (AdBlue) system (Diesel only)
10	–	–
11	Mini – 20A	Horn relay input
12	Mini – 10A	AC compressor relay input
13	–	–
14	Mini – 7,5A	Alarm siren
15	Mini – 10A	Washer heated nozzles relay input
16	Mini – 10A	Enable cooling fan relay input and enable cooling oil pump relay input (Gasoline only)
		Enable cooling fan relay input (Diesel only)
18	Maxi – 40A	PTC heater 3 (Diesel only)

Ref.	Type	Function
19	Maxi – 30A	Headlamp washer relay input
20	Maxi – 30A	Wiper motor relay output
21	Maxi – 20A	LH low beam relay input
22	Maxi – 20A	RH low beam relay input
23	Maxi – 40A	Fuel heater supply (Diesel only)
24	Maxi – 50A	Glow plug control unit (Diesel only)
28	Mini – 7,5A	IPC Instrument Panel Control
29	Mini – 10A	Primary load to PCM module
30	Mini – 5A	ORC- Airbag module
31	Mini – 5A	ABS-ESP module
32	Mini – 5A	SCCU, AWD module, EPS and AQS
33	Mini – 10A	HDLP Headlights (AFLS)

Ref.	Type	Function
34	Mini – 15A	Primary load to engine harness LH side (Gasoline only)
	Mini – 30A	Primary load to engine harness (Diesel only)
35	Mini – 15A	Primary load to engine harness RH side (Gasoline only)
36	Mini – 30A	PCM module primary load (Gasoline only)
		PMC module primary load, Glow plug Control Unit (Diesel only)
37	Mini – 15A	Engine secondary load (Gasoline only)
38	Mini – 15A	Lambda sensor (Gasoline only)
	Mini – 7,5A	Urea (AdBlue) pump (Diesel only)

Ref.	Type	Function
39	Mini – 7,5A	Flow meters, tank leakage, Canister, exhaust by-pass valve and relay coil (Gasoline only)
		Urea (AdBlue) tank harness and heater Control Unit (Diesel only)
48	Mini – 7,5A	Lambda Sensors — ICR (Diesel only)
49	Mini – 10A	Pedal brake switch-TCM module
50	Mini – 15A	+30 PCM module (Gasoline only)
51	Mini – 30A	Fuel pump relay input (Gasoline only)
		Fuel pump supply (Diesel only)
52	Mini – 5A	Starter solenoid signal for PCM and voltage stabilizer

Ref.	Type	Function
53	Mini – 10A	AWD module (Gasoline – AWD only)

Rear Power Distribution Centre

• To access the centre, it is necessary to lift the ground coverage of the boot compartment and remove the access cover (refer to “Maintenance-Free Battery” in this section).
• 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.

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

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 stabilizer, dashboard

Ref.	Type	Function
10	Maxi – 40A	Start&Stop: voltage stabilizer, body
11	Maxi – 40A	High Premium stereo amplifier unit
	Maxi – 20A	Premium stereo amplifier unit

Ref.	Type	Function
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

Ref.	Type	Function
18	Maxi – 30A	Rear RH door module
19	–	–
20	Maxi – 20A	Premium stereo amplifier unit (2)
21	Maxi – 40A	Urea (AdBlue) heater Control unit (Diesel only)
22	Mini – 7,5A	Rear module (HVAC)
23	Mini – 10A	Fuel door relay, RF Hub module, ELSD
24	Mini – 10A	ITM module, ceiling light units (front and rear), rain/light sensor
25	Mini – 20A	Inverter
26	Mini – 20A	Motor sound system (Diesel only)
27	Mini – 20A	LH rear seat movement
31	Mini – 25A	LH front seat movement

Ref.	Type	Function
32	Mini – 30A	ELSD module
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, TPMS module, Navtrak, Hands Free access module
37	Mini – 50A	Power boot lid module
38	Mini – 25A	RH front seat movement
40	Maxi – 20A	Boot power outlet
41	–	–
42	–	–
43	Mini – 20A	Seat passenger heater module
44	–	–
45	–	–

Ref.	Type	Function
46	Mini – 5A	Rear camera
47	Mini – 5A	Navtrak
48	Mini – 5A	Surround-view
49	Mini – 10A	Internal temperature sensor, humidity sensor, internal mirror, rain/lights sensor, HALF
50	–	–
51	Mini – 25A	Rear seat and steering wheel heater module
52	–	–
53	Mini – 25A	Rear seat vented module
54	Mini – 7,5A	Blind Spot module
55	–	–
56	Mini – 7,5A	Blower front HVAC coil relay
57	Mini – 7,5A	Blower rear HVAC coil relay
58	–	–

Ref.	Type	Function
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, RSE
67	Mini – 7,5A	USB charge outlet, sunroof
68	Mini – 20A	Rear sunshade module
69	Mini – 25A	Rear console power outlet and cigar lighter

Ref.	Type	Function
70	Mini – 10A	Front HVAC module, Parking Aid Module PAM, ELSD

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 function of the fuses in the box under the dashboard.

Ref.	Type	Function
1	Mini – 7,5A	Cluster module, CSS, SGW, DSRC – Japan Version
2	Mini – 15A	Cluster module, clock
3	Mini – 10A	DSRC, 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

Ref.	Type	Function
8	Mini – 10A	Start & Stop switch, diagnostic outlet

How to Replace Fuse in the Maserati Quattroporte 2018

1. Find the fuse box
   • In a Maserati Quattroporte, the fuse box is usually under the dashboard on the driver’s side. There may also be a fuse box under the hood, close to the battery. 
2. Switch off the car
   • Before you try to change the fuse, make sure the car is turned off to avoid any electricity problems.
3. Find the Blown Fuse
   • Look at the owner’s manual’s fuse layout to find the fuse that needs to be changed. The picture should help you figure out which fuse goes with which electrical part.
4. Take out the blown fuse
   • Carefully grab the blown fuse with a fuse puller tool or a pair of needle-nose pliers and pull it straight out. Be careful not to damage the switch box or the parts around it.
5. Insert the New Fuse
   • Put in a new fuse with the same amperage number as the old one. This is important to keep the electricity from getting damaged. It needs to be pushed in.
6. Make Sure It Fits Right
   • Make sure the new fuse is firmly placed in the fuse box. It shouldn’t be too loose or not straight.
7. Test the Electrical Component:
   • Once the new fuse is in place, start the car and check the electrical part that is connected to the fuse to make sure it works right.
8. Close the Fuse Box
   • Once you’re sure everything is working right, safely close the fuse box cover.
9. Get Rid of the Blown Fuse
   • Get rid of the blown fuse the right way. If you don’t know how to do this, you can ask at your local car parts store how to safely get rid of it.

FAQs

Useful Links

View Full PDF: 2018 Maserati Quattroporte Owner’s Manual|Auto User Guide

2023 Maserati Quattroporte Specs, Price, Features, Mileage (Brochure)

Display Settings: 2018 Maserati Quattroporte Dashboard Guide