Table 1 shows one common power train related problems of the 2009 Lexus IS.
| Problem Category | Number of Problems |
|---|---|
| Power Train problems |
At approximately 85k total miles, Is250 automatic began dropping from 5-6k rpm to 2-3k rpm whenever changing road grade to an incline or decline, usually above 50 mph, dropping to 35 mph on the highway. To maintain proper speed, I would have to downshift from d to s and floor the accelerator. Traction control, parking brake, and abs lights would sometimes coincide with this problem. This continued until I sold the Is250 at 88k miles.