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tomzimmermann45

RC rough start fuel consumption

I'm having a weird issue with my 2023 Lexus RC hybrid. It's only got 24113 km on the clock, but I've noticed my fuel consumption has gone up recently, and it's starting pretty rough. I was reading online and it looks like it could be a defective throttle valve. Any thoughts?

4 comment(s)

charles_johnson91

Interesting. I had a similar issue with my RC a while back. Hard starts and the fuel economy tanking sound very familiar. Have you checked the throttle position sensor or looked for any air intake leaks? Could also be the accelerator pedal module playing up. That was the culprit in my case.

tomzimmermann45 (Author)

Thanks for the tip! Accelerator pedal module, huh? How did you figure that out? Was it throwing any codes, or did you just have a hunch? I'm not super mechanically inclined, so any pointers would be great.

charles_johnson91

No problem! It didn't throw any codes at first, which was super annoying. Eventually, the workshop guys pinpointed it to the accelerator pedal module causing the throttle valve to not function correctly. It was messing with the engine idle too. I'd suggest taking it to a trusted mechanic, they should be able to diagnose it properly. I ended up paying around 205€ for the whole thing.

tomzimmermann45 (Author)

Thanks a bunch for the info! Sounds like that's probably what's going on with mine too. I'll take it to the workshop and mention the accelerator pedal module. Hopefully, that's all it is. Appreciate the help!

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