rebb Posted December 25, 2007 Share Posted December 25, 2007 I too have experienced loud engine tapping noise in my RX 350. It is loud when the car is cold and somewhat better when warm. Still, for a luxury vehicle, this engine appears to be very unrefined. The dealer says it is due to Lexus move to a timing chain (vs belt). He said that by avoiding the belt, owners will save $900 in future service cost. I believe that if owners can afford to buy a Lexus, they would choose a smooth, quiet, sophisticated engine for 80,000 miles and then pay the $900 to change the belt. Is there any solution to quieting this engine? Thank you Quote Link to comment Share on other sites More sharing options...
yl1826 Posted December 26, 2007 Share Posted December 26, 2007 I too have experienced loud engine tapping noise in my RX 350. It is loud when the car is cold and somewhat better when warm. Still, for a luxury vehicle, this engine appears to be very unrefined. The dealer says it is due to Lexus move to a timing chain (vs belt). He said that by avoiding the belt, owners will save $900 in future service cost. I believe that if owners can afford to buy a Lexus, they would choose a smooth, quiet, sophisticated engine for 80,000 miles and then pay the $900 to change the belt.Is there any solution to quieting this engine? Thank you Haven't found a solution yet, but I'd just like to add that yes, when the car is cold, it will be noticeably louder when driving around. And I also want to add that I recently took a ride in my friend's RX 330 which is how refined I'd like the RX350 to be. The rumble that the RX350 makes reminds me of driving around in a mini-van. Quote Link to comment Share on other sites More sharing options...
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