2006 Lexus IS 250 Engine cooling Problems

“Car started to run rough, slowed down, check engine light and sbs light came on (ithought it was an oxygen sensor). Book says to take to dealer immediately. I took it in, they did a check, told me it was a 'loose gas cap'. A month later - same thing happened. I took it back, they kept the car for two weeks - told me the valve springs were not the correct length and had to be replaced.”

“For 3-years we have complained to the dealership regarding the musty smell coming from the A/C vents. We were advised by the dealership to cut off the A/C before arriving home to allow the unit to drain. We also were advised to spray lysol into the outside cowl vents which did improve the odor but this A/C musty smell has always been an issue and is all over the internet. On 12/20/2011, we noticed water was apparently entering the passenger compartment. The carpet was wet and there was excessive moisture and water under carpet. …”

“I purchased a 2006 IS 250 in october, 2005. The vehicle has been driven for 2,500 miles. After the engine warms up, smoke and a burned smell come from the engine compartment. The first time I brought the problem to the dealers attention I was told that everything was normal. I brought the vehicle in a second time and it was discovered that oil was leaking from the passenger's side valve cover onto the hot exhaust manifold causing the oil to smoke and burn. …”

“I own a 2006 Lexus is250 and there is a problem that I cannot see to handle nor the dealer can handle. The problem with the car is that when I'm going over 60 to 65 MPH the check engine light blinks and the vsc light comes on. The car does not accelerate and just the RPM would go up. I took the car in to the dealer with extended warranty in hand on 4 now 5 different occasions and everytime I'm hearing different stories. Here is the list. * may 22, 2009: 60,000 mile service done.* sept 6, 2009: took the car in for check vsc & check engine . …”

“I have a 2006 Lexus is250. I noticed rough starts and idle. This was at or around 65k miles. I assumed it was related to super cold weather or bad gas (after the car sat unused for 2-3 days+) at around 84k miles during warm weather - I experienced both a rough start and stalling at a stop sign. I took the vehicle into my local dealership where it has been meticulously maintained. They did an extended diagnostic (kept the car over a long weekend) and advised my car was not firing 65-85% of the time and that it was caused by the valve springs. This is a $5,000 repair. …”