The 2018 Toyota Sienna doesn't have a timing belt but a timing chain. The coolant needs to be changed every 60,000 miles or so. Your air filter needs to be changed every 15,000 to 30,000 miles or so. The spark plugs need to be changed every 100,000 miles or so unless it's a copper one. A cooper spark plug needs to be changed every 30,000 miles or so. You will come into many issues with an engine. A dire problem is the engine overheating. This may lead to car fires and the vehicle exploding. There could be excessive oil use, requiring the oil to be changed quickly. A spark plug may come off, causing engine issues. A gasket may become loose and that needs to be tightened up. You can have oil leaks and those need to be repaired quickly.
Benjamin K.
August 29, 2019
No, the 2018 Toyota Sienna does not have a timing belt, it has a timing chain. Toyota began replacing timing belts with timing chains in 2007, but only on V6 engine models.
Charles
April 7, 2021
No. Timing chain.
temple
July 20, 2020
55567
Tony
April 2, 2020
Does the 08sienna le have a timing chain or a does the 08 have a timing chain or a timing belt
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