Lithium CR1632 (2008). I just replaced mine and got it from the dealer.
No, it has a timing chain.
The Lexus GS300 qualifies as a midsize sedan. This is a great car, and it has only improved with each new generation Lexus has released. Its latest design was in 2006; however, the 2006 model was discontinued after a year and then rereleased as the GS350. Lexus made the GS350 in a response to the consumer complaints about the lack of power in the GS300. The GS350 was released with a 3.5 Liter V6 engine. Both the GS300 and the GS350 are identical except for the beefed up engine. Hope this helps.
The following models are affected: 07-09 LS460 AND LS460L, 07-09 GS350 AND GS450H, 2008 GS460, 2008 LS600HL, 2006-2008 IS350.
PLIZ HELP How can i reset the injector maintenance required in lexus gs350 2012
http://www.clublexus.com/forums/showthread.php?t=338155
The 2008 Lexus IS-350 is 15 ft. 0.1 in. (180.1 in.) long.
The 2008 Lexus IS-250 is 15 ft. 0.1 in. (180.1 in.) long.
The 2008 Lexus IS-F is 15 ft. 3.5 in. (183.5 in.) long.
The 2008 Lexus GS-450H is 15 ft. 10 in. (190 in.) long.
The 2008 Lexus ES-350 is 15 ft. 11.1 in. (191.1 in.) long.
The 2008 Lexus LX-570 is 16 ft. 4.5 in. (196.5 in.) long.