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Is it normal that when I start my 08 ES 350 the engine seems to sound very clanky or almost like a diesel engine for lack of a better way to describe it. Well, maybe not as loud as a diesel engine but very different from what I think it should sound. This seems to smooth out after a few minutes. I've noticed this since the weather has gotten colder (I live in Dallas). When I took it to the dealer, they say this is normal and there is nothing wrong. A service advisor says it probably sounds this way because the oil hasn't had time to go throughout the system. They say they compared my car to another vehicle and didn't hear any difference. Are they feeding me a boatload of crap? I like everything about the car with this one exception.
The bottom line is that it is normal characteristic of the engine, but I would not say it is normal compared to other makes and models.
I have spoken to Lexus customer service about this. They are aware of the issue, but are denying any warranty claims because there is no fix. So, dealers will feed you any story to get you back on the road.
I have driven other ES350s in the cold and they do it too. I have also driven a 2008 Sienna with the 3.5L engine in it, it makes the same noise.
Do a search on this forum, you will find multiple threads on this topic.
Do what I do, turn the radio up and try to enjoy the car as is.
I have a 1996 GMC Safari and I have never experienced this rough/loud idling during cold starts. I'm in GA and it gets cold....below 32 on some nights. It cranks right up and runs smooth...out the gate. I just purchased a 09 Level III ES 350...haven't picked the car up yet it's on the way, I'll be listening though on the mornings when its cold. I went to a Caddy dealer in ATL to test drive a 08 CTS, and at start-up it sounded rough. I asked the salesman why it sounded so rough, he simply replied because the car was sitting idle for a long time.....so maybe it's more than just the cold??. It could have something to do with the newer engines? Not sure... I'll do some research on this...