Bulletins
| Bulletin | Bulletin date | Replacement Bulletin | Item no. | Summary | Added |
|---|---|---|---|---|---|
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||||
| ITB-10-075 | 12/22/2010 | 10036745 | Infiniti: transmission shift issues and/or a/t dtc stored. a slight vehicle vibration/shutter with light acceleration at low speeds; at times engine rpm goes up (about 200-250 rpm) during the 3rd>4th up shift, or the 4th>5th up shift; eng | 04/12/2011 | |
| POWER TRAIN - MANUAL TRANSMISSION | |||||
| ITB-09-032 | 09/28/2009 | ITB-09-032B | 10030084 | Infiniti: affected vehicles has a harsh 4-3 downshift while coasting at 30-20mph, with closed throttle condition. engine braking may also be felt under same driving conditions. *pe updated 12/2/09. *pe | 07/31/2009 |
Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| POWER TRAIN | |||
| 08/24/2010 | 10200 | ||
| Apparently on 2009 infifniti g37s, there is a programming error/deficiency in the electronic engine control module (ecm) affecting the processing of the mass flow rate sensor that will cause the engine to unexpectedly (and without a dash warning indicator) to lose power. at occurence of the failure, the car will decelerate from highway speed to less than 35 mph within a few seconds. following the failure, the engine rpm will not exceed 2,400 rpm and speeds above 35 mph are impossible (i found that 4th gear is the highest gear selectable). this failure can be dangerous in a number of traffic situations. i have learned from an infiniti service dept. that the failure will temorarily correct itself if the engine is turned off for a period of time, but that the failure could reoccur. the car's ecm was re-programmed by towbin infiniti (las vegas, nv) on august 30 and that supposedly fixes the failure. while at towbin, the service man said that infiniti knows of the problem, but is waiting to see how wide-spread the problem is. owners have not been told of this problem. towbin service said they have seen about 300 cases of the problem. a salt lake city dealer service dept. had also heard of this problem. again, i feel this problem can be dangerous, because: if it were to occur in heavy traffic, it may be difficult to get out of the way of others; if it were to occur when turning in front of oncoming traffic; after it occurs, there is no way to keep up with higher speed traffic - one is left going slow and hoping no one rear ends me; without more information, i have no way of knowing if the problem has really been fixed. | |||
| 02/03/2010 | 4100 | 1 | |
| I own a two-month old infiniti g37x. when braking at highway speed, the engine does not seem to slow down as fast as it should. i brought this to my infiniti dealer this week. they conducted tests on it and found that it performs as designed. however, they acknowledged that the transmission does not slow down when the brake is applied - that the engine is designed to click down from gear to gear. but when braking hard at a highway speed, the car does not slow down immediately because of this design. i've been driving for 33 years and have never before felt like the car was not going to stop when it needed to. this car gives me that feeling. i've had to stop quickly a couple of times on the highway and i did not feel as though i was in control of the car. infiniti's tests seem to confirm this. however, they did not offer any sort of repair because, again, the car is reacting as designed. they did say that a software correction might occur in the future because corporate infiniti is aware of this problem. *tr | |||
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||
| 03/26/1976 | 13753 | ||
| After driving the car for a while and then turning it off for 30 min-1hr, the transmission will surge 200-250 rpm the first time the car is driven again. the surge happens only the first time while shifting from 3rd gear to 4th gear. to date, this has not caused an accident. the engine has consistently performed like this since its purchase in february 2009. i first reported the issue to sewell infiniti, houston, tx on 9/25/09 and to west houston infiniti on 10/14/09. i have reported the issue another 6 times in addition to the two listed above. however, both dealerships claim that they cannot replicate the issue; therefore, they have not fixed the problem. on 12-22-10, infiniti issued itb10-075 to correct the problem. when i presented the itb to sewell infiniti on 3-26-11, they stated that they would review it. i was told later that the itb would have applied to my car except that one part was one letter off. i called infiniti customer support and was told that infiniti is not going to do anything further to correct the issue since the dealership cannot replicate the problem. | |||
| 09/12/2010 | 45000 | ||
| Pulling into parking stall (brakes applied / traveling 5-10 mph) the car lurched forward twice and stuck a parked full size truck. the car bounced backwards and lurched forward again and stuck the truck a second time and bounced backwards again. the ( off button) was able to be pushed at that time. the brake was fully applied the entire time. this has been the only occurrence. infinity has not been able to duplicate problem and has downloaded the data base. the formal report will take approx. 4 weeks to complete. no parts have been replaced. infinity's consumer's affair has told us to pickup the vehicle and drive the vehicle despite no explanation or written proof the vehicle is safe to drive. the problem is related to either braking, acceleration or both | |||
| 08/01/2009 | |||
| There is a problem with my transmission in my infiniti 2009 g37 sedan journey. it accelerates on it's own. it happens about once or twice a week. i have taken it to the dealership, they said they did what they could. it got a little better, but the problem still persists. | |||
| 12/21/2009 | 375 | 1 | |
| We picked up our brand new infiniti g37 sedan out of town (52 miles on it) and the next day, drove it home 300 highway miles. obviously, we were extremely fortunate the problem didn't begin on the trip. by the second day, the car started dying when we came to a stop. at first, the problem didn't happen every time we slowed down, and we discovered putting the car in neutral proved helpful. we hoped it was a fluke that would quickly abate. unfortunately, by the next day, the problem worsened, and the check engine light went on. we took it to the local dealer, and with infiniti, they determined the torque converter was locking, and the car needed a new transmission/drive train - apparently, they found a po744 error code. this is our 3rd infiniti, and we've never had a single mechanical problem with the others, and both dealerships (the one we purchased from and the local one handling the service) claimed they'd never seen anything like this on a new car. i'm afraid what might have happened had we needed to stop suddenly in traffic. to reinforce the magnitude of this problem, the warranty repair estimate (thus far) stands at $11,000 (retail would be $16k+). in light of how significant the problem, i'm scared to drive a vehicle which immediately required this type of repair. infiniti's consumer assistance department has turned the file over for review but will only look into whether the situation qualifies for replacement under applicable lemon laws. they won't consider owner loyalty or problem magnitude of the problem, and i remain very concerned about future safety. *tr | |||
| POWER TRAIN - MANUAL TRANSMISSION | |||
| 03/01/2010 | 6000 | ||
| The manual transmission in my 2009 infiniti g37s started grinding gears nearly every time the transmission was placed in 6th gear. this resulted in longer than necessary gear changes at high speeds and prolonged time with only one hand on the steering wheel. the car was never driven excessively rough. this problem started at ~6000 miles on the odometer. at ~8500 miles, i took the car in for repair. infiniti replaced the transmission with a new transmission under the factory warranty at no cost to me. | |||