Heard a clunk from the rear of the vehicle. Upon inspection I found that the electronic locker disintegrated damaging the rear end. I found out that this is a very common problem for 2004 to 2007 Titan's with the off-road package. Never used the truck for towing. It was used for daily transportation. The truck had about 90,000 miles on it when the rear end blew up. I had a local shop put in new axles, ring and pinion and an after market locker for about $2500. Nissan wanted to replace the complete rear end which would have been about $3500.

- Marana, AZ, USA

Popping sound coming from rear of vehicle. Dealer inspection revealed rear differential failure. Vehicle has 71000 miles and is dealer maintained. Dealer to replace entire rear assembly at a cost of 3600 dollars. The vehicle is a 2004 Nissan Titan.

- Greensboro, NC, USA

Rear end failure of dana 44 in a Nissan Titan, had to replace all for $3000.

- Kingston, NH, USA

I have a 2004 Nissan Titan. My rear axel seals are leaking. This truck only has 85K, as of 6/10/11. I rarely pull trailers, or any heavy load. This is my daily driver. I do mostly city driving. I noticed there was a problem when my brakes started acting up. Ex. I was driving near my house when, I pressed my brakes and it almost went to the floor. It also kicked in the ABS, when I was only doing about 10mph. The emergency brake light came on flashing. Every time I pressed the brake(only two times) it did this. I pulled over and turned the truck off. Got out looked around and did not see anything wrong. I got back in the truck and drove straight home. It did not do this again until about 15K miles later. I then took it straight to Nissan and they told me this was the problem. They told me only one was bad. About a week later I put the truck on a lift myself. I noticed both were leaking! I dont understand why this would happen unless it was a manufacturing default. There is never a hard strain on my drivetrain. It is 2wd and my work truck in the city. I have also read on the forums that this is a known problem. My radiator also busted last week. Up till now I have never had any problem with this truck.

- Houston, TX, USA

Rear axle seal failure.

- Senatobia, MS, USA

Left axle seal leak on 2004 Nissan Titan, seal replaced at 63,000 miles. At 65,000 mile now rear differential is bad, needs replacement at a cost of $2800.

- Coventry, CT, USA

When my 2004 Nissan Titan le 4X4 pickup (66420 miles) failed at attempting to climb the hill to my house, I discovered that although 4WD was selected, it was apparently not engaged. Upon investigation it was discovered that the driver's side half axle came out of the front differential. Upon research I discovered this is apparently a recurring problem with Nissan Titan 4X4S. The vehicle was taken to a local mechanic who repaired the problem by re-inserting the half shaft into the front differential.

- Evergreen, CO, USA

Left rear axle seal is leaking, at 85,436 miles.

- Cypress, CA, USA

2004 Nissan Titan, both rear axle seals leaking. Oil leaks out very fast and must refill constantly. Oil also leaks on and into the wheel and brakes.

- Palm Bay, FL, USA

While driving in slick conditions I placed my 2004 Titan in 4 hi, didn't notice any improvement in traction, slip indicator continued to light on acceleration. 4 hi indicator showed engagement but the truck was not engaging in either 4 hi or 4 lo. Took the truck to an auto repair shop. The "C" clips on the shaft had failed and allowed the shafts to come out of the splines. Due to that the shafts not being in place they ovaled the sockets, the differential oil leaked out, the bearings went out which in turn cased both the front differential and the transfer case to fail. I got the truck repaired, replaced both the transfer case and front differential, at the cost of $2500. A week later it snowed almost 12 inches. Engaged 4 hi while leaving the drive way, drove approximately 4 miles and the truck lost 4 hi again and was making a grinding noise I put the truck back into 2 hi noise stopped. Took it back to the shop and the shaft has come out again, even though this was a new front differential and was told that there is no fix for this problem. It happens and will continue to happen when ever 4 wheel drive is used or is to be engaged.

- Montgomery, MN, USA

Problem: Noise in the front axle and would not shift into 4-wheel drive while moving. During an oil change, the dealer noticed that the front axle was leaking. Recommended replacement and mentioned the original equipment was inferior to the replacement. Several months earlier the rear axle was leaking and the dealer replace that seal as well. Cost: Front differential axle $1,700 & rear differential $900. Total of $2,600 in two months. My concern is why does a vehicle (2004 & 47K) need a complete front end replacement? come on Nissan, please recognize you have a manufacturer defect or an engineering issue and take responsibility for this!

- West Linn, OR, USA

2004 Nissan Titan: Pulling away from a stop sign a loud bang was heard and forward motion ceased. Once able to get back underway loud banging was heard. Vehicle lurched badly around corners. Towed to dealer. Inspection found rear differential had failed requiring replacement. Repair was estimated at $3771 + tax. Vehicle had 131K miles. Vehicle was traded in on purchase of new vehicle at a discounted value of $4000 due to repairs required.

- El Dorado Hills, CA, USA

Took my 2004 Nissan Titan into dealer for oil change and they informed me that the rear left axel was leaking. The truck has 107.000 miles.

- St. Marys, GA, USA

While driving kid's to school one morning truck locked up wheels and skidded through traffic for couple 100ft from 35mph or so. Got out of car and could see that something in left front suspension hanging out and some kind of fluid everywhere. Incident almost caused me too crash and also stranded myself and kids. Car was towed to mechanic as I could do nothing to get car to move, also assumed was not to safe to try and drive. After diagnosing was told that left front axle flange had fell out of front differential and would need the entire front differential replaced with left front axle as well which got caught in suspension and locked up wheels. Cost on repairs would run around $2000. Service writer advised that should be or possibly covered under warranty as truck has 6 year 60,000 mile warranty on power train. Truck has 64,872 and is a 2004. Called 3 different dealerships and all said no due to 4800 miles over, but that I could drop off and they would gladly repair and see if Nissan would do anything. Was not comfortable with that as most visits to dealership always ended up same way. " sorry we couldn't help here's your bill ". not happy with this whole thing checked up on this problem and found are 1000's of complaint's for the same issue for the exact same problem and how it occurs all over internet, lemonlaw site, forums and also here at NHTSA. After having truck repaired at local shop also found out that Nissan has designed a entire new differential to fix this issue. Although when I spoke to these dealerships service department they knew nothing of the sort. The parts department had no problem giving this information to the mechanic at my shop that performed repairs. It seems a bit scary that not only does the dealership and or manufacturer know about this, but also government and traffic/highway safety people and yet we just keep driving around with our families and loved one's trusting these vehicle's because no one is telling us different.

- Morrisville, PA, USA

As so many others have experienced, the rear axle seals are leaking fluid on rear brake rotors which is causing brakes to fail. This is a major safety concern and expense. Nissan should be made to fix issue. Only have 54000 miles on vehicle.

- Forked River, NJ, USA

Rear differential seals failed. Nissan service advised me both axles needed replaced along with new seals. Over $1660. They have a service notice that axles in Titan pick-ups need upgraded. Sounds like they know the axle set up leads to seals that leak causing differential failure.

- Crozet, VA, USA

1. heard a popping / grinding noise once put in gear and while moving up to 50 mph. 2.both rear axle bearings and seals on 2004 Nissan Titan crew cab bad was told could damage rear end gears and possibly wheels falling off in transit. 3. replaced both rear axle bearings and seals to also include ring-snap, axle spacer, left rear wheel sensor.

- Jacksonville , AL, USA

Rear axle seals leak.

- Westwood, KS, USA

2004 Nissan Titan rear axle seals (left and right) showing sign of leakage at 90,100 miles. This is the second occurrence for this problem with this vehicle. I purchased the vehicle in July 2006 with 51, 100 miles and discovered both rear axle seals leaking. Nissan replaced the entire rear axle in July 2006. Now 5 years and 39,000 miles later the problem returned.

- Norfolk, VA, USA

I notice oil on the rear tires and running into the rear rotor which could lead to breaking failure. My mechanic said the rear axle seals and pinion seal were bad so I had them replace right after I purchase the vehicle with only 30,000 and just now I got new tires and that's when I find out it's been leaking all this time now with 104,000 miles. Look on the internet and this is a common problem with 04 Nissan Titan. No recall...

- Joliet, IL, USA