When cruise control is set, and the need to pass or speed up is required, if you press the gas pedal to the floor the car takes off and *then stops responding and drops back to set cruise control speed while you are still flooring it. It bucks back and forth. I spoke to several owners on a infiniti owners site and theres performs the same. Its dangerous if the need to speed up occurs. This is a problem in the coding of the parameters in the ecu and could be deadly with unexpected performance. This happened on i40 in knoxville tennessee in heavy traffic. This condition can be repeated back to back multiple times.
The worst 2005 Infiniti Q45 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Acceleration1
- Airbags1
- Electrical1
- Seats1
- Tires1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Acceleration1
- Airbags1
- Electrical1
- Seats1
- Tires1
Recalls 3
Air bags: side/window
- What is wrong
- Nissan is recalling certain model year 2003-2005 infiniti q45 vehicles. A wiring connector for the seat mounted airbag may experience increased electrical resistance, resulting in the non-deployment of the side air bags.
- Risk
- Non-deployment of side air bags could increase the risk of personal injury.
- Remedy
- Nissan will notify owners, and dealers will modify the wiring connector, free of charge. The safety recall began on march 19, 2012. Owners may contact nissan customer service at 1‑800‑647‑7261.
Recall number 12V079000 · Recall details
Exterior lighting: brake lights
- What is wrong
- Certain vehicles fail to comply with the stop lamp and reflex reflector requirements of federal motor vehicle safety standard no. 108, 'lamps, reflective devices, and associated equipment."
- Risk
- This standard is to reduce crashes, injuries and deaths by providing adequate illumination of the roadway, and by enhancing the conspicuity of motor vehicles on the public roads so that their presence is perceived and their signals understood, both in daylight and in darkness or other conditions of reduced visibility.
- Remedy
- Dealers will replace the rear combination lamp assemblies free of charge. The recall is expected to begin on or about april 16, 2007. Owners may contact infiniti at 1‑800‑662‑6200.
Recall number 06V395000 · Recall details
Child seat: latch strap
- What is wrong
- Certain passenger vehicles equipped with power rear seats fail to conform to the requirements of federal motor vehicle safety standard no. 225, "child restraint anchorage systems." the lower anchorage brackets in the rear seats do not meet the location requirement in this standard. This may cause difficulty in attaching some child seats to these brackets.
- Risk
- If a child seat is not secured, there is an increased risk of injury in a crash.
- Remedy
- Dealers will replace the lower anchorage brackets with modified ones to ensure that the standard is met. The recall began on october 17, 2005. Owners may contact infiniti at 1‑800‑662‑6200.
Recall number 05V374000 · Recall details
See all 3 recalls for the 2005 Infiniti Q45
Defect investigations
Non-deployment of Side Thorax Air Bags
The subject vehicles are equipped with seat-mounted, side thorax air bags for the driver and front passenger.This investigation revealed that faulty side air bag module electrical connectors located under the driver and front passenger seats can cause an interruption in the electrical circuit that will drop the input voltage below the specified range.As a result, the air bag warning lamp illuminates on the instrument panel and the affected side air bag becomes deactivated.In June 2009, Nissan conducted a service campaign to repair the defective air bag electrical connectors in the subject vehicles (both Infiniti Q45 and M45 models).In June 2010, Nissan sent a second notification concerning the 2009 campaign to owners of vehicles that have not been remedied.Nissan is now conducting a safety recall of the Q45 vehicles not remedied under the service campaign (approximately 1,349 vehicles; see the federal safety agency Safety Recall No. 12V‑079 for further details).The M45 vehicles are not included in the recall; however, Nissan is re-notifying owners of M45 vehicles that were not remedied under the previous service campaign.See attached report for more information.A safety-related defect trend has not been identified in the Infiniti M45 vehicles at this time and further use of agency resources does not appear to be warranted.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by the federal safety agency that no safety-related defect exists.The agency will monitor the issue and reserves the right to take future action if warranted by the circumstances.The ODI reports cited above can be reviewed online at www-odi.the federal safety agency.dot.gov/owners/Searchreference under the following identification (ODI) numbers: 10327196 and 10402282
EA09005
Side air bag non-deployment
The subject vehicles are equipped with seat-mounted, side torso air bags for the driver and front passenger.this investigation has revealed that faulty side air bag module connectors located under the front seats can cause an interruption in the electrical current that will drop the input voltage below the specified range.as a result, the air bag warning lamp illuminates and the affected side air bag is deactivated.the rates of complaints, field reports and warranty claims related to the subject issue are very high.for example, nissan submitted 4,853 warranty claims on 3,551 distinct subject vehicles out of 13,836 total subject vehicles.also, analyses of warranty claims indicate an increasing failure trend over time.this preliminary evaluation has been upgraded to an engineering analysis (ea09-005) to further study the issue.
PE08067
Technical service bulletins for the 2005 Infiniti Q45 65
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Wiring harness repair information
- Certification label and VIN plate replacement service information
- CAN communication codes – diagnostic tips and guidelines
- CAN communication – network diagnostic flow chart
- Intelligent key not detected / engine will not start
- Removing foreign material from the window glass
- Window glass warranty information
- Windshield cracking
- ABS/vdc CAN diagnosis information
- Wheel bearing collision damage
2005 Infiniti Q45 fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 4.5L 8‑cyl | RWD | 16 | 22 | 18 |
What 2005 Infiniti Q45 owners say
Most recent owner complaints, unedited.
Tl* the contact owns a 2005 infiniti q45. The contact stated that while driving 35 MPH, another vehicle crashed into her passenger side. The air bags did not deploy and the front driver's seat twisted toward the driver's door during the crash. The contact suffered injuries and was taken to the hospital. The vehicle was towed to the contact's home. The failure was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 117,000.
I purchased 4 new tires for my vehicle on 7/24/2010 the tires in question are michelin p245/45r18 primacy mxv4 96v. After only 3500 miles the rear right tire blew on the highway, fortunately for me there was heavy traffic and I was not doing over 30mph. The tire was replaced with the spare tire and then it was discovered a 3" gash from the side wall to the first thread. No foreign objects were found in the tire to suggest that I picked something on the road,however I did notice that the reinforcements were ripped I am concerned about the safety of these tires and have kept the damaged tire for inspection for anyone who may want to investigate. Thank you.
Tl*the contact owns a 2005 infiniti q45. While the vehicle was parked, the contact attempted to start the vehicle; however, the key would not turn in the ignition. She called aaa to get the vehicle to start. The vehicle was taken to the dealer for service, but no failures were found at that time. The current mileage was 28,000 and failure mileage was 17,000. Updated 01/02/08. *lj updated 12/12/07
Compare the 2005 Infiniti Q45
Other model years
1990199119921993199419951996199719981999200020012002200320042005
Questions about the 2005 Infiniti Q45
Is the 2005 Infiniti Q45 reliable?
Owners have filed 4 complaints about the 2005 Infiniti Q45, fewer than a typical Q45 model year.
What is the most common problem with the 2005 Infiniti Q45?
Acceleration and speed control, with 1 complaint. Next is airbags (1).
How many recalls does the 2005 Infiniti Q45 have?
3 recalls, covering air bags, exterior lighting and child seat.
What gas mileage does the 2005 Infiniti Q45 get?
Official estimates for the 2005 Infiniti Q45 range from 18 mpg combined. The most efficient version (4.5L 8-cyl, RWD) gets 16 city and 22 highway.
VIN decoder
See the problems and recalls for an exact car
Buying a used 2005 Infiniti Q45?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history