Toyota Sienna is a minivan manufactured by Toyota since 1997. The first Toyota Sienna was introduced in late 1997 marked at North America as the replacement of Toyota Previa. Backed up by famous Toyota, Toyota Sienna has received awards such as Car and Driver's Five Best Truck Van Award, Edmunds Editor's and Consumer's Most Wanted Van, IIHS Double Best Pick for 2004 and Best Sales Value Award and IIHS Top Safety Pick Award for 2010. Till present, it has gone through three generations.
The second generation Toyota Sienna (XL20; 2003-2010) was unveiled at the 2003 Detroit Auto Show. It offered trim levels such as CE, LE, XLE, XLE Limited (renamed Limited) as a 4-door minivan. Toyota Sienna then was powered by 3.3 L and 3.5 L V6 engines attached to 5-speed automatic transmissions. At the 2011 Los Angeles Auto Show, the third generation Toyota Sienna (XL30; 2010-present) was revealed. Now, it is available in five trim levels: Sienna base grade, LE, XLE, Limited and SE. And it gets powers from a new 2.7 L inline 40cylinder engine besides two 3.5 L V6 engines. Available transmissions are 6-speed and 8-speed automatic transmissions. Both all-wheel drive and front-wheel drive Toyota Sienna are available.

As a minivan, Toyota Sienna is very popular among caterer and families, which means it has to deal with heavy loads and long operating time. Based on Toyota Sienna owners, here are the most common problems happen to it:
First, engine issue. Engine's problem is often the omen of failing of the vehicle. This problem shows on Toyota Sienna included performance suffered a lot, misfiring, poor fuel economy or bad gas mileage. What's more, metallic sounds, dropping oil pressure as well as illuminated Check Engine Light are warning you that you should inspect your spark plug, oil filter, drive belt, and air filter.
Second, premature braking system failure. The significance of this system needs no more emphasis as everyone knows clearly. According to Toyota Sienna drivers, their brakes became more and more noisy and the brake pedal kept giving out vibrations. Moreover, brake responded poorly, which is very dangerous for driving. Once having any suspicion on your Toyota Sienna's braking system going wrong, you can try checking brake pad set and brake disc in case it is too late.
Door handle is responsible for providing convenience in entering or exiting from the vehicle for passengers. If you feel your Toyota Sienna's door handle could not be locked up or being loose, you can get someone checked it for you, because maybe the door lock is failing as well. And seat belt should get changed after every car accident. If you want to breathe in fresh air, an optimum performed cabin air filter is a must.
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