I took my 2007 Nissan Sentra to the costco on 7 January 2010 in order to have 4 new tires put on the car. I was advised that tire pressure sensor packs for each tire be replaced at the same time the tires were being replaced and that the cost would $2 per tire. When the tire technicians attempted to replace the first service pack they found that the sensor nut on the rear left tire had seized up. They then found that the sensor nut on the front left tire had also seized up and the tire sensor cracked. For this reason it had to be replaced with a rubber stem. It was reported to me that this was common with Nissan because they are put on too tightly by the factory when the Nissan are manufactured. After having problems with the tire sensors on the left side of the car, the costco technicians didn't feel comfortable trying to replace the ones on the right side of the car. I was advised to take the car to the dealer. I took the car to my Nissan dealer and was told that the tire sensors are not covered under the warranty and that it would be $650 to replace all four tire pressure sensors. I refused to pay for them to be replaced after being told that this is a specific problem that Nissan are having. So now the tire pressure warning light stays on all of the time due to one of the tire sensors being replaced by a rubber stem. So if there is a problem with any of the four tires I will not be able to tell it via the tire pressure warning light since it stays lit all of the time. I asked at costco if they have problems with any other makes of cars when it comes to the tire pressure sensors and I was told that it is only with Nissan. So obviously I am not the only person who has experienced this problem and it might warrant an investigation and possible recall - out of consideration of the cost ($650 to replace 4 tires pressure sensors) as well as the safety concern. Thank you in advance for your time.

- Xxxxxxx, MD, USA

During routine maintenance, I was told I needed 4 new tires and 4 wheel alignment by the dealer. The estimated cost was incredibly high. I only had 35,000 miles on the car. I found a good master mechanic of over 20 years, bought new tires and had alignment done. I was told the rear wheels are bowed in and manufacturer does not call for any adjustment. He showed me the back of the car visible turning in slightly on each side and on the top. Only way to be that way would be if the bar was bent. Suggested I take it to the dealer. Dealer said the back wheels passed but are not at 0 as the front was. It was -15 which is considered passing. Their mechanic told me the manufacturer designed this car to be like that in the rear so when you have passengers in the back or weight in your trunk the wheels would then be straight! what if you are like me and hardly ever have any passengers in the back seat nor weight of any kind in the trunk" now the tires are to wear out prematurely" also my car in front was way out of alignment and tires were prematurely worn. Dealer told me I was lucky to get 35,000 miles out of my car that a lot of people only get 16,000. I am still pursuing this matter and this is step one above the dealership and there are other issues also which I will post in the appropriate category. Also now the tire gauge light keeps coming on.

- Joppa, MD, USA

My brake light came on 2 months after I bought my car in 5/2007. I called the dealer in glenside and was told to "check the fluid". my concern was this being a new car and lights were blinking on the dashboard such as low tire gauge and brake signals. When fluid was added the light did go out. In 8/2007 I made a trip to V.a. and had a hard time stopping in the jammed up stop and go traffic around Washington. An accident would have occurred had I not pulled off the side of the road. Again in 9/2007 my light came on. I reported the incident when I went for routine maintenance and was told it was resolved. My concern is I knew these occurrences were not appropriate for a new car. I was disregarded with my concerns by the dealer I bought the car from, so who I am to trust with the "inspection" suggested to me in my owner notification?

- Philadelphia, PA, USA

False illumination of the low tire pressure light. Light will illuminate randomly and the dealer cannot fix it. It has been brought in 4 times in the last 4 months for it and they won't do anything. It is to the point where when the light comes on, I don't believe it.

- Hudson, NH, USA