Three problems related to brake sensor have been reported for the 2008 Infiniti QX56. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Infiniti QX56 based on all problems reported for the 2008 QX56.
The brakes on my vehicle has a strange reaction when I brake at times and is hesitant to stop. It doesn't happen often but it's scary. Usually after I stop the vehicle, cut it off & crank it again the problem goes away only to do it again on a later date. After going online I find that many others have experienced the same problem with Infiniti Qx56 & Nissan armada�s. I'm sure whether or not it's a abs sensor malfunction or what but thankfully it haven't happened while being in heavy traffic because I fear I'll rear end another motorist.
My wife was driving her 2008 Qx56 and when she tried to brake her foot went to the floor and she heard a grinding noise, she pumped and pumped the brakes but did not notice any measurable slowing down of the vehicle. Fortunately there was no one in front of her and she was evenatually able to safely pull into a parking lot and stop the vehicle. Upon my research this appears to be a know defect. The dealership where I took the car, diagnosed it as a delta stroke sensor defect. Upon researching this there appears to have been a class action suit against Nissan/infinitie that the plaintiffs won. If this is a know defect why hasn't there been a recall? my wife could have been seriously injured or killed or she could have injured or killed someone else due to the catastophic loss of brakes. This is not a wear and tear issue and their is no warning that it will happen. You just lose the brakes and the ability to stop. There needs to be a recall before someone dies (if they have not already).
Multiple incidents (3) of braking issues where vehicle loses braking ability however, it feels as though the abs brakes are engaging. All three times the vehicile is moving at or about 40 mph or less and deaccelerating so I have been able to come to a safe stop. However, I do have to push the brake pedal nearly to the floor and the "brake" warning light also comes on. . When I turn the vehicle off, it resets and I do not have any other issues immediately. The third time (today) 12/12/11, I took the truck to dealer and they, at first, said they were not able to find anything wrong with the vehicle. Then upon further investigation they claim it's a sensor that will cost $1700 to replace. Discussion threads I have read online (from as far back as 2004 until the present) have shown this to be a continuing problem on Nissan armada's (the parent company of Infiniti) and the Qx56's from models 2004 to the present and Nissan continues to ignore the problem. Some have even had complete brake failure and accidents. I will take my research to the dealer tomorrow and fight to have my problem taken care of pro bono or I may continue to drive it because I cannot afford $1700 which hopefully will not lead to a worse problem down the road. This needs immediate attention.