general problems of the 2006 Infiniti QX56

Brake failure. The brake fails occasionally while driving on the streets or on the highways without waring. The brake pedal goes down to the floor, and grinding/hitting metal to metal sound is heard and vehicle brake control is lost. Experiences were traumatic; you swing left or right to avoid hitting another vehicle from behind or running a red light. The vehicle has been inspected by an independent mechanic, and the brake components: rotors, pads, drum, and fluid levels were ok, each time it occurs. The brake lights come off and on and each time, the mechanic finds no issues with the brake components. One dangerous aspect of these occurrences is that after the vehicle sits for a while, like 30 minutes to one hour, and you go back to driving the vehicle, it appears that the brakes readjust and starts working normally; it continues to work normally about a month, and out of nowhere without warning it fails again and readjusts later. I was about to take my daughter to college out of county, and she has a lot of luggage as she lives in the dormitory; we would not use this infinity which is a large SUV that could have accommodated me, my daughter and my wife, because of fear of brake failure on the highway. We decided that we would have to use our small compact Lexus instead, but I would not be accommodated in the Lexus because of my daughter's much luggage; my wife and my daughter will make the trip without me. Please look into these break failures.

I was driving at approximately 60 mph on a freeway when traffic ahead came to a sudden stop. I pressed the brake pedal and it traveled to the floor and I did not feel the car slow at all. The "brake" dash indicator light came on, and I continued pumping the brake pedal to try and slow the car. While I continued pressing the brakes, the car started slowing down rapidly on its own as if it was pressing the brakes on its own and I could hear a loud grinding sound. I released the brake pedal and crossed several lanes of traffic as the car was uncontrollably slowing to reach the shoulder. I called my husband to tell him what had happened and remained on the shoulder with the car running. My husband met me on the shoulder and drove the car home. He said that the grinding sound was the abs on in a permanent state, and would activate during every braking unless the brakes were applied extremely lightly. The car was driven to our driveway and turned off. Several hours later my husband drove it again. The "brake" light was off, braking returned to normal, and abs could be activated with hard braking as usual.

While in motion attempted to stop at intersection red light. Vehicle failed to stop. Lights on dash blink, power locks open and close along with windows by self while in motion and stationary. Several occasions vehicle would not start. Dealer states "no issues found".

My brakes sometimes just goes crazy!!! the petal goes to the floor and it grinds and it is completely out of control. It only gives me one date below but it has happened multiple times.

Multiple times the brakes have went out and I have been unable to stop the vehicle. This has happened in various places and during various circumstances including on the highway and city streets, it has also happened in parking lots. There is no indication, warning lights or signs when they stop working,I find out when I press on the back and it makes a odd sound almost like a spring and a pulsating/grinding feeling when I press the break down. No indicator lights come on when the brakes go out. I am unable to get the vehicle stopped during this time. There has been no set reason or pattern for the breaks going out, they just randomly stop functioning. Normally when this happens for the past year, after I get my vehicle to a complete stop, I turn the vehicle off and then back on and it's back to normal. However the most recent incident was on 2/24/2018 and the brakes went out 4 separate times even with turning the vehicle off. I feared for the safety of my children in the car and myself so the vehicle was returned to my house and not drove again until 2 days later. Infiniti was notified of the problem as well. I am greatly concerned this will end up causing a vehicle accident and injury to my children, myself or anyone else. When this first started happening I had brakes and rotors changed but problem continued. There is no rhyme or reason for when they go out and I have no control over stopping my Qx56. This is very concerning to know it can happen at anytime!.

When I am driving (pressing the gas) an inconsistent random clicking noise that's affecting the brake system and usage is heard. It's difficult to accelerate. In the past, I would simply turn off the vehicle and turn it back on and the noise would stop. It was difficult to explain and show to any mechanic because it does it randomly and unexpectedly, therefore it would never do it when needed. I went on because it wasn't often at first. Now it's at an extreme level as if the vehicle doesn't want to drive and I could be on the highway (you can imagine how scary that is at high speeds).

When applying the brakes a grinding sound occurs. The abs warning comes on and you really don't have control of the vehicle. It is really scary. It has happened a few times but yesterday was a very close call.

The contact owns a 2006 Infiniti Qx56. While driving 30 mph, the vehicle made an abnormal noise after depressing the brake pedal. The pedal traveled to the floorboard and the vehicle would not stop. The contact was able to regain control of the vehicle after taking her foot off the brake pedal and steering into an empty parking lot. The brake warning indicators illuminated. The vehicle was taken to the dealer where it could not be diagnosed. The vehicle was not repaired and the failure recurred. The manufacturer was not notified of the failure. The VIN was unknown. The failure mileage was approximately 140,000.

The brakes get hard and cannot stop quickly. It grinds and have to park and cut the engine off for a few minutes then it works again. Almost caused a fatal accident. This is definately a factory defect due to lots of owners on the net having the exact same problem. There is no indication when it about to happen. It happened at least three times since buying this vehicle used for my wife. This problem happens also with the Nissan armada. Contacted the manufacturer and they don't seem concerned at all. They says to bring it to your local dealer on my own expense. This is an design problem due to the amount of complaimts from customers. I am concerned about not only my family safety but others. Thanks.

The contact owns a 2006 Infiniti Qx56. The contact stated that while depressing the brake pedal, he noticed an abnormal grinding sound. The manufacturer was not made aware of the failure. The vehicle was not inspected or repaired. The approximate failure mileage was 171,874.

Since I purchased my Qx56 2006, it has happen several times, I think approximately 10times, I got scared at the beginning and freaked out, all my family was with me and we didn't know what to do, all I did was turn the car off and wait for a minute then I did turn the car on and the problem was gone, I'm not the only person that has this happen and hope that you guys do something about it the only big problem I think is that I'm afraid that if this happen again and I will not be able to stop my car and will cause death by hitting somebody, I had a small incident but there was no big damage and the car in front of me heard the noise but we didn't fill a report if you have any questions, you have my VIN # and you can find me I hope that Nissan does something about this.

While attempting to slow my vehicle , with 8 passengers, the brakes started to act irratically. There was no way to slow the vehicle in a controlled manner. Either the braking was too hard or too soft almost leading to a collision. I took my vehicle to the Infiniti dealer that I purchased it from new. They replaced the brake booster at a cost of over $900 dollars. This was in October of 2012. 10, 000 miles later in may of 2014, the exact same braking issue again happened with my vehicle fully loaded with passengers. I took it to the local Nissan dealership and they are saying that the same parts need to be replaced now at a cost of over $1400 . This is a major safety issue and is in no way related to normal maintenance.

Since I purchased my Qx56 2006, it has happen several times, I think approximately 40 times, I got scared at the beginning and freaked out, all my family was with me and we didn't know what to do, all I did was turn the car off and wait for a minute then I did turn the car on and the problem was gone, I'm not the only person that has this happen and hope that you guys do something about it the only big problem I think is that I'm afraid that if this happen again and I will not be able to stop my car and will cause death by hitting somebody, I had a small incident but there was no big damage and the car in front of me heard the noise but we didn't fill a report if you have any questions, you have my VIN # and you can find me I hope that Nissan does something about this.

While traveling on the freeway at about 60 mph, traffic in front of me began to slow. When I applied the brakes, the break pedal almost went to the floor and made a banging or thumping noise. It felt like the abs went off and I almost ran into the back of the car in front of me. This has occurred many times since I have owned this vehicle and when I take it to the dealership they cannot find anything wrong and suggest to start replacing parts at the cost of a few thousand dollars. The most recent incident was yesterday while traveling on the freeway. Again I had to stop suddenly as there was debris in the roadway and the brake pedal went to the floor.

Brakes shutter and stop working on 2006 Infiniti Qx56. Determined that the abs needed a firmware update. Went to dealership, paid $100. 00 for update and problem is still occurring. This is my wife's vehicle and she travels with my 2 year old daughter. There are hundreds if not thousands of similar complaints on Nissan user forum boards.