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Engine Oil Leaking Problems of Toyota Sienna



Toyota Sienna owners have reported 16 problems related to engine oil leaking (under the engine and engine cooling category).

car image   Engine Oil Leaking problem of the 2007 Toyota Sienna 1
Failure Date: 07/25/2014

While traveling at 75mph on interstate, I noticed heavy white smoke trailing vehicle. Slowed and pulled over. Inspected engine and found large oil leak. No check engine or low oil lights illuminated prior to smoke. Entire bottom of the car coated with oil, including exhaust system, front passenger tire and rear tires. No oil registered on dipstick. Towed to Toyota dealer where the car was purchased. Failed part was the oil cooler hose. Technician showed me the faulty rubber hose which had a pin-hole leak and there was barely one half quart in the engine, which holds 6. 4 quarts. Judging by how often I had been looking in the rear view mirror due to traffic, I'd estimate the leak was only a few minutes in length and the engine would have been without oil and at highway speed very soon if I hadn't noticed. This is not an extraordinary event until you realize that the oil hose that failed was part of Toyota's 90k oil cooler hose limited service campaign for 2gr-fe v6 engines in 2011. I had my car undergo this fix, which simply replaced a rubber hose with another rubber hose which was supposedly made from a compound that better resists hot oil. The replacement hoses are failing, which is what Toyota TSB-0201-11 "oil cooler seep" (Dec 21, 2011) is meant to cover and it replaces the rubber oil hoses with an all-steel hose. However, it only applies to customers still under the 36,000 mile warranty and with a "seeping" hose. Most 2007 Sienna owners, like me, were well past warranty mileage in 2011, had no indication from Toyota that the rubber oil hoses were potential problems and are only getting the steel hose after catastrophic engine oil loss. I was billed $532 for the oil cooler hose replacement and quoted $307 to replace the O2 sensor which was damaged by the volume of hot oil that sprayed on it. Huge oil loss at highway speeds. Toyota knows, but many owners do not.

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car image   Engine Oil Leaking problem of the 2005 Toyota Sienna 2
Failure Date: 06/17/2014

First, I noticed some oil stains on my drive way, then I drove my minivan to a local Toyota car dealer for check up and routine oil change. Next day, I noticed a bigger oil stain. Anyway, I had an appoinment and have to drive my minivan to my dentist office, on the highway, I saw smoke came out of my front hood. Then, I drove it to the same Toyota dealer afterwards. It was quite scary driving and seeing smoke came out of my front hood especially with my young daughter on board today. At one moment, I thought my car will be on fire. On the paper, I was told that my leaking is from rack and pinion steering system. I called Toyota customer service, and the person who assisted me state his surprise of this rack and pinion leaking for such a low mileage car. I would like to file a mechanical damage report toward Toyota defective parts.

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car image   Engine Oil Leaking problem of the 2007 Toyota Sienna 3
Failure Date: 04/20/2014

The contact owns a 2007 Toyota Sienna. The contact stated that upon inspection, it was found that there was an oil leak. The contact diagnosed that the oil cooler hoses needed to be replaced. The manufacturer was not notified of the failure. The vehicle was repaired by the contact. The approximate failure and current mileage was 79,303.

car image   Engine Oil Leaking problem of the 2008 Toyota Sienna 4
Failure Date: 08/27/2013

I was driving down the road and saw smoke rolling out of engine. By the time I pulled over I noticed oil leaking out everywhere. It was the engine oil cooler line and I have since replaced the rubber hose twice and has ruptured two more time since. This is very dangerous. I lost over 12 quarts of oil in the last month.

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car image   Engine Oil Leaking problem of the 2007 Toyota Sienna 5
Failure Date: 08/14/2013

The contact owns a 2007 Toyota Sienna. The contact stated that while having the oil changed, the mechanic stated that the vvti oil pressure line was leaking. The vehicle was taken to the dealer for diagnosis where it was stated that the oil pressure line needed to be replaced. The vehicle was not repaired and the manufacturer was notified. The approximate failure mileage was 70,000.

car image   Engine Oil Leaking problem of the 2007 Toyota Sienna 6
Failure Date: 07/28/2013

The oil cooling line suddenly ruputured with no previous warnings or leaks.

car image   Engine Oil Leaking problem of the 2008 Toyota Sienna 7
Failure Date: 06/06/2013

The contact owns a 2008 Toyota Sienna. The contact stated that the oil line, which Toyota called the vvt line burst and the all of the oil leaked out of the vehicle. The contact took the vehicle to the dealer who confirmed the vvt line burst and caused the failure. The dealer informed the contact that the part was not under warranty nor was there a related recall. The vehicle was repaired. The VIN was not available. The failure and current mileages was 51,303.

car image   Engine Oil Leaking problem of the 2008 Toyota Sienna 8
Failure Date: 03/21/2013

While driving alot of smoke coming out from engine, pulled over and turn off and all came out of car and oil started leaking. Next day took van to the Toyota dealer and they checked eveything was fine but there was a part( oil hose no. 1 ) that was been recall and it been fix by Toyota dealer but same hose was blow which is dangerouse that Toyota dealer told us and he was surprised that could not happen after replace part that mean they still have that same problem and we was on I-10 , we stop the van on time otherwise we wont able to move van and we might lost our life so please investigate and save others life .

car image   Engine Oil Leaking problem of the 2008 Toyota Sienna 9
Failure Date: 07/28/2010

1. Engine lights came on alerting us to a problem (check engine, service engine, etc. ). After alleged repair, spouse drove to families house approximate 600 miles away and found a significant amount of oil had leaked from the system - oil had been changed as part of the fix. A second dealer, at the new location, "fixed" with the same hose again, with similar results, though my spouse only drop 120 miles. She is unable to continue the trip home due to this issue. 2. After taking to dealer, was told the vvt oil line was a known faulty part and needed replacement. Was not a "formal" recall, but was considered an internal recall to Toyota that needed to be fixed for "free". Both dealerships claimed to have fixed the problem, though the engine is still leaking a significant amount of oil. There is a significant amount of data on the web that addresses this oil line and the associated issues. 3. Part was replaced, but with same type (part number, composition, etc. ). Basically, a "new" bad part was replaced. Furthermore, the first dealership installed various gaskets and seals incorrectly, and still gave the car a safe rating for a 600 mile trip. The second dealership merely replaced a bad oil line with another bad oil line.

car image   Engine Oil Leaking problem of the 2001 Toyota Sienna 10
Failure Date: 06/02/2003

The vehicle experienced an oil leaked.

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car image   Engine Oil Leaking problem of the 2001 Toyota Sienna 11
Failure Date: 04/03/2003

After my engine registered "low oil", the mechanic found significant sludging. It was flushed and changed and then in <1000mi there was no oil again. Now Toyota says the leaks around the valves are due to my "neglect" in changing oil. I have the receipt from 4 mos ago for oil change. I also was told they would not consider paying for it because it was my lack of oil change that "caused" the sludging (despite my receipt) and that I needed all my oil change receipts for them to consider a claim (2 1/2 year old car. ).

car image   Engine Oil Leaking problem of the 2000 Toyota Sienna 12
Failure Date: 01/12/2002

Engine has failed due to oil leaking at piston rings/sludge. Toyota claiming improper maintenance. Have maintenance records for oil changes at intervals better than recommended. Toyota claims denied because service not performed at Toyota. Estimate from dealer for repair is $8,300. There appears to be some other problem with this engine but they won't investigate further due to sludge even though I can prove proper maintenance.

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car image   Engine Oil Leaking problem of the 1998 Toyota Sienna 13
Failure Date: 01/02/2002

Vehicle did not pass vehicle emissions test, dealer said that dirty oil had leaked into the engine causing engine sludge, repairs were not covered under warranty, owner stated that the oil was changed regularly, and knew of other similar cases, onwer is concerned that this condition is a result of a manufacturing or design defect.

See all problems of the 1998 Toyota Sienna.

car image   Engine Oil Leaking problem of the 1998 Toyota Sienna 14
Failure Date: 01/02/2002

Vehicle did not pass vehicle emissions test, dealer said that dirty oil had leaked into the engine causing engine sludge, repairs were not covered under warranty, owner stated that the oil was changed regularly, and knew of other similar cases, onwer is concerned that this condition is a result of a manufacturing or design defect.

car image   Engine Oil Leaking problem of the 2001 Toyota Sienna 15
Failure Date: 11/15/2001

Initially oil leak after oil change. Was told that transmission pan was leaking and paid for replacement. Transmission fluid then started leaking. Returned vehicle to dealer; transmission pan was tightened. Noticed fluid still leaking; returned vehicle to dealership. Dealership could not detect source of fluid leak; placed die in oil and transmission fluids; asked to return vehicle in a few weeks. Returned vehicle to dealership; was told there was a leak surrounding engine seal and seal would need to be repaired.

car image   Engine Oil Leaking problem of the 2000 Toyota Sienna 16
Failure Date: 09/11/2000

While having cam seal/valve seal replaced due to an oil leak, mechanic noticed right front passenger tire had a bubble and was replaced by firestone, consumer states vehicle is going back for a 3rd time for the oil leak.


Other Common Engine And Engine Cooling related problems of Toyota Sienna