Table 1 shows one common electronic stability control related problems of the 2003 Infiniti Q45.
| Problem Category | Number of Problems |
|---|---|
| Electronic Stability Control problems |
Bought 2003 q 45 in spring 2007, still under warranty. June 2009 at 79,000 miles the engine was replaced (under warranty). 6/30/09, 80,081 miles car problem with no acceleration and service engine and cruise control light coming on. Problem didn't reoccur until June 2012 when engine suddenly cut off while driving. Would restart in neutral but in a week or so it did it again on the interstate at about 55. Fortunately was in right lane and could get to emergency lane before someone ran into me. Car restarted. Continued like this until 6/29/12 when repaired, only it continued to stop and the cruise control/traction lights would come on and car would suddenly stop and then surge forward. 8/11/12 serviced for same problem. 8/14/12 same thing, car stopped then surged, then the engine cut off and lost steering/brakes. Infiniti service again, this time installing new electronic control module ($ 1600). The dealer kept this car for several days and a mechanic drove it until it happened several times. The mechanic or someone at Infiniti dealer told me it was a "death trap" and it is. A few weeks later going around a roundabout, the engine turned off and lost steering. Put in neutral and restarted. Couple of months later, engine turned off while driving. Friday June 7, 2013 I pulled onto busy highway, drove a mile and engine suddenly stopped. Before I could get in neutral to restart, a dump truck nearly rear-ended me. Got it restarted, then the cruise control light came on, car stopped again and then surged forward. I have contacted Infiniti and internet searched. There were many Infinitis with this problem in the years 2002-2003, though roswell Infiniti said there were no recalls for this problem on any Infiniti yesterday. This is a very dangerous situation, and Infiniti acts like they know nothing about this problem.
My 2003 Infiniti Q45 repeatedly stalls [so far, 15+ times] and often will not restart [10+ times]. With my family and me in the car, the stalling of the car puts us repeatedly in jeopardy of a rear-end collision or vandalism or bodily injury in dangerous areas. The car is properly maintained on its service schedule. It took my mechanic a week at a cost of $90 to confirm that the problem is the engine control module [ecm], the 'brain' of the car which controls other vehicle sensors, and this was confirmed by the Infiniti dealer at a cost of $150. The ecm was sent to texas for reconditioning and reprogramming, but is being returned because the ecm is irreparable. The cost to buy and reprogram a new ecm from Infiniti, the only source, is $2000 for a vehicle with 100,000+ miles. But a new ecm will likely have the same problems as the ecm being replaced. I do not want to put my family in repeated jeopardy. There is no assurance that the new ecm will work properly. I am suspicious that the Infiniti ecms contain numerous design flaws. I have had numerous problems, aside from stalling, with the existing ecm, including door locks automatically locking with the key in the ignition so that I am locked out, the locks not unlocking, etc both my mechanic and infinity were unable to diagnose these problems until it became clear that I had a malfunctioning ecm. There was a recent massive recall of Nissan and Infiniti ecms, but the Infiniti Q45 was excluded, even though the symptom of repeated stalling is identical to my car, except that, worse, I also often cannot restart the vehicle.