2002 Infiniti QX4 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2002 Infiniti QX4

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2002 Infiniti QX4 Problems

The 4WD Light May Flash On and Off Intermittently

The 4WD light may flash on and off intermittently with no transfer case related fault code stored in the powertrain control module (PCM). Our technicians recommend to ensure the correct Nissan/Infiniti  approved fluid is present in the transfer case if this condition occurs.

The Heater Blower Motor May Only Work on the High Speed Setting

The heater blower motor may only work on the high speed setting. Our technicians recommend replacing the heater blower motor and fan control amplifier to address this problem.

Front Catalytic Converters are Prone to Cracking

Front catalytic converters are prone to cracking along the seams of the converter itself. Most repair shops can successfully weld the seems to prevent exhaust leakage.

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2002 Infiniti QX4 Questions

What all causes my vehicle to miss? (1 answer)

Just bought this few days ago . ran good till last nite, went to crank it and it wouldn't go into gear, then after 40 mins finally went into gear and now its missing and engine light is flashing?

Car dies overnight (1 answer)

Brand new computer just got put in my 02 qx4. We had to replace the battery from it sitting for so long. Now that we have a brand new battery, if we don't drive it every day, the battery dies. Brand new battery...bad alternator? What else could it be? Wires to the battery were jist cleaned so...

What is the best setting to get the best gas mileage? 2WD or auto? (1 answer)

I can chose between Auto 2WD or 4WD. I use 2WD but am not sure if that is the best setting for in town driving. And what is the best setting for the freeway?

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2002 Infiniti QX4 Recalls

Front Airbag Inflator Module

This limited regional recall is for vehicles currently registered or first sold in Florida, Puerto Rico, Hawaii and the U.S. Virgin Islands, and equipped with Takata-brand air bag inflators. Upon deployment the driver and/or passenger airbag inflator could rupture, increasing the risk of personal injury. Honda dealers will replace the affected airbag inflator modules to correct this concern.

Injury Due to Airbag Deployment

Airbags use a chemical reaction contained in an inflator module to create the pressure necessary to inflate the bags when deployment is required. These vehicles are being recalled because the front passenger airbag inflator may produce excessive internal pressure when deployed. As a result, the inflator module could rupture, causing metal fragments to strike vehicle occupants. Dealers will inspect and replace any defective passenger front airbag inflator modules found.

Rust May Form on the Strut Tower Housing

In areas where winter road salt is used, a mixture of snow/water and salt may enter an assembly location hole in the upper strut housing. This corrosive mixture can collect on the mating surface of the strut housing panel and the inner hood ledge assembly; over time, this can cause rusting of the strut tower housing. The rust can weaken the housing, causing it to crack and pull away from the inner hood ledge assembly. This can lead to grinding noises and increased steering effort, which, if severe enough, can cause the steering column to break. This would result in a loss of steering control, increasing the risk of a crash. Dealers will inspect the strut housing and repair the vehicles as necessary. An interim notification letter should be mailed to owners prior to May 16, 2011.

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2002 Infiniti QX4 Reviews

based on 5 customer reviews
I love my infiniti qx4 2002. This is my second one! It is quite expensive to maintain but it's worth the expense. Presently it's been diagnosed with po420 catalytic converter problem....my heart is sad....but still love my baby. Wish they did not discontinue the model. It is a very durable vehicle. I once saw 450,000 mileage accrued from QX4 4WD. It was still running, I fell in love....
The problems began in early 2012, when we signed up for a new “Express Service and Oil Change” program at our local dealer. We thought that this new offering, given that it allowed us to obtain service without an appointment, would make life easier. Instead, it has caused us untold hours of lost time, and consistent struggles to get Infiniti to deliver the level of service we had come to expect...
idol is low.install a new throttle sensor and is the same. is there a way to install. joe t

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