Electrical System Problems of Infiniti Q45

My low beam headlamp system has now failed at two separate times, both during nightime driving. The first was on November 2, 2009, at 37,600 miles, the left hid ballast failed; Nissan repaired the failure under warranty although its time-portion had expired. The second failure was at 47,600 miles on December 1, 2011. Nissan/Infiniti consomer affairs were told and acknowledged that mileage warranty was no-where-near expired - but time had - yet, talked as though they would help with the repair. The quid-pro-quo was that I get an Infiniti dealer to verify problem and cost to repair. At my cost of $125. 88 the Infiniti dealer agreed the right ballast was now bad; cost to repair approximately $1100. Nissan consumer affairs were instructed (according to CA) by a higher echelon of Nissan not to repair. Ca did agree to refund my dealer cost of $125. 88. Conclusion: in 2004 this was Nissan/Infiniti's premium product. This car was earilier reported to NHTSA because the fore-aft power function of the driver's seat failed at 42,170 miles and Nissan would accept no responsibility. Surely the NHTSA must reasonably think that failure of a driver's seat in its rearmost position and two failures of the low-beam headlamp system could easily place any driver and his/her passengers in a life threatening situation.

See all problems of the 2004 Infiniti Q45 🔎.

A few weeks after purchase of my 2002 Infiniti Q45 (under 4000 miles)during an extended road trip, I lost all controls on my a/c and audio systems. In a separate incident, I also lost control of my cruise control system. After stopping and restarting the car, the systems were re- activated. With the extensive computerized systems on this car, this could have been a much more serious problem! I reported this problem to my dealer but they were not able to replicate the problem. On another long trip,a few thousand miles later,both problems reoccurred. This time my dealer asked to keep the car for several days during which time the situation did replicate. The technicians traced the problem to a defective radio(?) which they replaced. Less than 100 hundred miles later on a hiway trip, both conditions reoccurred. The car is back in the shop!I have alerted Infiniti consumer affairs for the second time of this problem . They are saying they can't fix it, if they can't find the problem!hello!!!any advice would be appreciated. I certainly do not feel safe driving this car. What can happen next?.

See all problems of the 2002 Infiniti Q45 🔎.

1 - there is up to a two second delay when quick acceleration is required. At times it feels as if the engine completely stalled. 2 - the vehicle often will not downshift to slow the vehicle on a hill. I could be in 5th gear at around only 1800 rpm, and when I downshift twice, it will not go to 3rd. I often have to downshift up to 6 times for it to respond and switch to third. I need to take my eyes off the road to constantly check if I'm in the gear I select. 3 - the parking/emergency break will not hold the fully loaded vehicle on a hill. If the transmission in park fails, the vehicle will roll. All issues are considered to be normal by the manufacturer. They corrected the problem on their new 2005 version and refuse to do so on my vehicle.