Table 1 shows two common electrical system related problems of the 2003 Infiniti Q45.
| Problem Category | Number of Problems |
|---|---|
| Ignition Module problems | |
| Car Will Not Start problems |
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.
Tl-the contact owns a 2003 Infiniti Q45. The contact stated that while driving at 30 mph, the contact noticed a noise coming from the front of the vehicle. The vehicle was taken to a dealer. The technician diagnosed that the fan belt and power steering belt needed to be replaced. The vehicle was repaired. In addition, the contact stated that three months later, the vehicle failed to start. The vehicle was taken back to the dealer. The vehicle was not diagnosed or repaired. The failure recurred on numerous occasions. The manufacturer was not notified of the failure. The failure mileage was 92,000. The VIN was unavailable. Oo.