Table 1 shows five common engine and engine cooling related problems of the 2003 Toyota Sienna. The number one most common problem is related to the engine and engine cooling (three problems). The second most common problem is related to the engine knocking noise (one problem).
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems | |
| Engine Knocking Noise problems | |
| Radiator problems | |
| Catalytic Convertor problems | |
| Engine Exhaust System problems |
Tl- the contact owns 2003 Toyota Sienna. The contact stated the instrument panel on the vehicle does not work and when the vehicle exceeds 30-40 mph, it slows down and the all of the warning light illuminate. Read details...
We own a 2003 Toyota Sienna that we bought new in January 2003. During March 2005, noticed knocking sound coming from engine during cold startups. Took to Toyota and after 4 days of various remedies which didn't work (catalytic converter replacement, oil change, engine cleaning), they chalked it up Read details...
Here is a list of mechanical malfunctions indicating manufacturing defects on my Toyota Sienna. The current models recalled by Toyota motors do not cover all vehicles with defects. Based on my personal experience in the past few years, Toyota motors have a lot of lying employees in their authorized Read details...