Home
Estimates Starting and Charging Alternator Replacement

Infiniti QX4 Alternator Replacement

An alternator generates electric power in a car and is a major component of the car's charging system. Replacement costs depend on the year, make, and model of the car.

Get a Quote

Find Your Cost

Find Your Cost

Our repairs come with:

Certified Mechanics  •  
12-Month | 12,000-Mile Warranty

Easy Online Booking  •  7 Days a Week

Range for All Cars

Free Instant Quote

Average Shop Price $428
RepairSmith Price $243
Average Shop Price RepairSmith Price $ Tell us your vehicle to get a guaranteed price for your brakes from RepairSmith.

Tell us your car to get a guaranteed price from RepairSmith.

Tell us your vehicle to get a guaranteed price for your brakes from RepairSmith.

Our repairs come with:

Certified Mechanics  •  
12-Month | 12,000-Mile Warranty

Easy Online Booking  •  7 Days a Week

Infiniti QX4 Alternator Replacement

RepairSmith offers upfront and competitive pricing. The average cost for Infiniti QX4 Alternator Replacement is $461. Drop it off at our shop and pick it up a few hours later, or save time and have our Delivery mechanics come to you.

Car
Location
Quoted on
Price
2001 Infiniti QX4
3.5L V6 • 240,000 miles
Mesa AZ 85210
Dec 2, 2020
$448 - $548
2002 Infiniti QX4
3.5L V6 • 238,000 miles
Hacienda Heights CA 91745
Oct 21, 2020
$446 - $545
2001 Infiniti QX4
3.5L V6 • 129,550 miles
Phoenix AZ 85022
Oct 2, 2020
$243 - $297
1999 Infiniti QX4
3.3L V6 • 50,000 miles
North Las Vegas NV 89032
Aug 29, 2020
$361 - $441
1997 Infiniti QX4
3.3L V6 • 127,000 miles
Henderson NV 89014
Aug 7, 2020
$407 - $497
2001 Infiniti QX4
3.5L V6 • 136,000 miles
Daly City CA 94015
Mar 10, 2020
$415 - $507
1999 Infiniti QX4
3.3L V6 • 200,000 miles
Hesperia CA 92345
Dec 12, 2019
$278 - $340
2003 Infiniti QX4
Base • 184,000 miles
Culver City CA 90230
Aug 19, 2019
$719 - $879
Last Updated:
Dec 15, 2020 8:45 PM
Get A Quote 12-Month | 12,000-Mile Warranty

What is an Alternator?

The alternator is responsible for two things. First, it powers the electrical units when your car is running. The radio, lights, window switches, USB ports, etc., are all powered by the alternator. And second, it recharges the car’s battery, which is the source of electricity when the car is turned off. Your car’s alternator gains power from the engine. It’s connected to the engine via a drive belt, and it converts that energy into usable electricity. It’s a pretty simple system. However, the alternator does need to be regulated, to make sure that nothing is overcharged or undercharged. In older cars, that’s the job of the voltage regulator. In newer cars, the engine control module (ECM) is responsible for those duties.

About system section icon
Get a Quote 12-Month | 12,000-Mile Warranty

Symptoms of a failing Alternator

Car won’t start

When your car is running, the alternator uses energy from the engine to recharge the battery. When the car is off, it needs that electricity from the battery in order to turn back on. If the car won’t turn on, it may be because the alternator isn’t recharging the battery.

Hard starting

Similarly, if the alternator isn’t charging the battery sufficiently, you’ll likely have trouble starting the car, also known as a hard start.

Stalling

You might think that these issues only arise when starting the vehicle, but a malfunctioning alternator can actually result in stalling when your car is turned on.

Lights that are too bright or too dim

If the alternator is sending too much electricity to the electrical units, your car’s lights will likely be brighter than they’re supposed to be. Conversely, if the alternator isn’t sending enough electricity, then the lights will be too dim.

Whining noise

A busted alternator will often make an annoying whining noise when the engine is running.

Warning lights

A malfunctioning alternator will usually result in a warning light or two illuminating on your dashboard. The check engine warning light and a charging system warning light are most common.

Get a Quote 12-Month | 12,000-Mile Warranty

How urgent is an Alternator replacement?

Usually a faulty alternator won’t cause further damage to the vehicle. However, if it is overcharging or undercharging certain electrical units, it is possible for some damage to occur. A malfunctioning alternator does make your car less reliable, however, due to the potential issues with stalling and starting, so it’s best to get it replaced immediately if you’re starting to notice the above symptoms.

System section icon
Get a Quote 12-Month | 12,000-Mile Warranty

How can we help?

Car repair can be scary, but it doesn't need to be. RepairSmith is here to make it easy.

Get a Quote

12-Month | 12,000-Mile Warranty