Hello, I have a lexus is250 2006, I have such a problem, the car does not go if I do not fully depress the pedal, when I disconnect the battery for ten minutes and connect, the car works well for a while and then breaks down again, does not ignite the check, dies on the uphill. The smell of soot enters the cabin, can you help me? Sorry for my bad English

 

Sounds like you might have a carbon build-up issue; very common on the IS250 model. I would start looking around where you love to see if a garage offers a walnut-blasting service to remove the unwanted carbon buildup.

 

Start here:

https://www.clublexus.com/how-tos/a/...mize-it-367282