pretty bad
Typical Repair Cost:
Average Mileage:
65,600 miles
Total Complaints:
4 complaints

Most Common Solutions:

  1. changing crankcase, rebuild cylinders, reseal, = 9000$ (2 reports)
  2. engine sludge (1 reports)
  3. replace engine (1 reports)
2004 Toyota Sienna engine problems

engine problem

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2004 Toyota Sienna Owner Comments

problem #4

Jul 032010

Sienna LE V6

  • Automatic transmission
  • 57,800 miles


I change the oil every 3,500 miles and the oil lamp lit up today. I have not call Toyota yet but I know they are going to ask for maintenance evidence. I change the oil my self and I do not keep receipts, my bad. I have no idea how to claim my rights without evidence of the oil changes.

- jorgerosario, San Juan, PR, Puerto Rico

problem #3

Mar 182010

Sienna AWD V4

  • Automatic transmission
  • 76,000 miles

I reported blue smoke from my Toyota Sienna 2004 AWD. The check engine light came on blinking. Koons Toyota recommended towing. I paid for towing. Koons Toyota stated the problem was bad electrical coils. I asked if this was fixing the symptom or the problem. They assured me that is was the problem. Paid $750 dollars to fix. One week later blue smoke again. This time the correctly figured out it was oil sludge. blamed me for not changing the oil. Stated it would cost between 5K to 7K to overall engine or buy used engine. I said no thank you and asked for my $750 dollars back. Koons Totoyota refused. Bad car Bad dealership. Once again Toyota does not take responsibility

- enggren, Vienna, VA, US

problem #2

Dec 282009

Sienna XLE V6

  • Automatic transmission
  • 50,000 miles

I have done regular oil changes, and ended up with a sludge problem. WTF? This is a Toyota right? That's why I didn't mind paying TONS more $ for better quality, SAFETY, RELIABILITY!! The dealership says they "might" be able to get Toyota to provide some assistance since they have seen this before, but they state that was only through the 2002 model Siennas, and other year Camrys. This is such a joke, they need to take responsibility and get me back on the road. People it is time to stand up, Toyota's ARE NOT PERFECT as WE ONCE THOUGHT!! I followed the dealerships instructions in providing maintenance info and I still have had no offer of any help for the over $8,000 in repair costs they say are needed. If you are experiencing this issue please post here. Toyota must take responsibility for pushing the engine so much so that it turns good oil into this muck they coined as "sludge". There are many SAFETY recalls on this 2004 YR Model too, plus electrical, and BRAKE PROBLEMS TOO. I will post those separately, but together all combined-----I'm feeling like a got a lemon. How about other 04 owners??? Time for a class action LAWSUIT???

- C M., Roseville, CA, US

problem #1

Nov 112008

Sienna LE V6

  • Automatic transmission
  • 78,600 miles

Oil changes were performed regularly using the higher grade pure synthetic. Apparently, there are a lot of others who had the same problem. Toyota Dealership refuse to take any responsibility.

- Richard L., Allen, TX, US

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