Infiniti Q45 owners have reported 3 power train related problems since 1996. Table 1 shows the 3 most common power train problems. The number one most common problem is related to the vehicle's vehicle shudder (1 problem). The second most common problem is related to the vehicle's automatic transmission control module (1 problem). For details of each of the problem category, use the links in the table.
| Problem Category | Number of Problems |
|---|---|
| Vehicle Shudder problems | |
| Automatic Transmission Control Module problems | |
| Power Train problems |
Transmission would shift hard while shifting from first to second gear, and vehicle would vibrate uncontrollably. Driver took the vehicle to the dealer for inspection, and mechanic could not duplicate the problem. Also, vehicle was operating as designed. Read details...
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. Read details...
The circuit board for crank position sensor and cam position sensor have improper solder joints. This has caused the service engine light to come on, the engine may not start, power reduces, engine stalls at a traffic light or while in motion, on a city street or highway or while making a turn. Read details...