Last post on Mar 15, 2008 at 5:55 AM
You are in the Toyota Sienna
What is this discussion about?
Toyota Sienna, Auto Repair, Scheduled Maintenance, Van
Nov 08, 2004 (2:35 pm)
My wife and I leased a 2004 Sienna in Sept.2003. From the beginning, we noticed that when the car is going down a long hill at road speed, if the brakes are applied, the engine revs an extra 500-1000 RPM.
We took the car into a Toyota dealer, who told us that this is "normal." Since this is the only car we've ever owned or leased that does this, we were wondering if anyone else has had this experience.
Dennis & Lyla Fox
#1131 of 2209 Engine REVS....
Nov 08, 2004 (3:43 pm)
Probably part of the hesitation issue/problem.
With the Prius you can chose to use the regeneration system to simulate engine lagging torque or you can chose actual engine lagging torque. In the latter case they tell you that fuel economy will suffer.
Suppose, say back in 01, Toyota learned from the Prius experience that if you put the transmission in neutral during any type of coastdown, the fuel economy is increased by 2 to 3%
Note, the EPA would be involved....
My 01 AWD RX300 certain seems to have this feature. When I lift my foot from the pedal at highway speeds it seems/feels as if the tranny shifts into neutral. The other time I notice this is just before coming to a stop, at just about the time I would release the clutch with a manual transmission the vehicle suddenly feels as if someone bumped me from behind lightly.
I'll have to go out and check but I wouldn't be surprised that during highway coastdown if I apply the brakes slightly the transmission would shift back into gear to add the engine lagging torque back into teh braking equation.
Just as flyingfox described above.
Now, here I am, sitting stopped at a traffic light, inadvertantly with the transmission not in 1st gear, and I decide to dig-out!
Really rough on those transmission clutches and bands, going from neutral or second into first while the engine is climbing in RPMs. No e-throttle here!
Strange. My RX doesn't require any transmission fluid service, EVER. At least according to the owners manual. I have asked Lexus (customer_satisfaction_inquirieslexus.com) why, at only 38k miles, with the extra towing cooling package, and NO hitch, my transmission fluid is looking burned and has a slight burned odor.
Their written response is that I should take it in to the dealer.
Remember that these vehicles were shipped with a specific EPA standard MPG rating. Haven't I seen somewhere that the 05 RX has a lower MPG rating than the 04?
And the RX no longer has the hesitation problem...!!
So how would Toyota keep the higher MPG and still prevent those bands and clutches from wearing out too soon.
why not use an e-throttle to delay engine torque onset while we shift the tranny into the proper gear??
No burned clutches or bands and no notification to the EPA, or the public, that the MPG was miscalculated.
#1132 of 2209 Re: Chips on Hood of Red Salsa Sienna [travl]
Nov 08, 2004 (5:00 pm)
I have a lot of chips and scratches on my 2004 Red Salsa Sienna. It looks TERRIBLE and it's only 8 months old. Just wondered if you'd received any replies that indicated any paint problems on these vehicles? Thanks
#1133 of 2209 Re: Chips on Hood of Red Salsa Sienna [travl]
Nov 08, 2004 (5:04 pm)
I have to agree with your statement on paint. I have an 8 month old Sienna in Salsa Red and it has at least 15 paint dings, scratches, etc. Far more than my 1998 Sienna! Just wondered if you've learned anything new about this paint problems? I 've must started researching the issue. Thanks!
#1134 of 2209 RE: Chips on the hood [hopeful8]
Nov 08, 2004 (5:08 pm)
I have a Salsa Red 2004 Sienna and the paint on mine is terrible also. Many chips, scratches, dings, etc. Have you learned anything new about this situation? Thanks
#1135 of 2209 RE: Chips on the hood [hopeful8] by llinder
Nov 09, 2004 (4:47 am)
Ditto that on my Silver Shadow too...
any new news on this front would be greatly appreciated
#1136 of 2209 Re: 2004 Sienna LE [flyingfox]
Nov 09, 2004 (6:23 am)
Yes, this is normal.
Nov 09, 2004 (6:45 am)
Has anyone else got a recall on the radiator, recall 40H. After just replacing the radiator just about 2 months ago it was leaking and they found it was faulty and replaced it, along with a sensor that was causing the check engine light to go on. Well just after a month of having that all done the check engine light came back on, it would stay on for a few days a go off. So we finally brought it back in to check it. And they said there were 2 new recalls on the van the radiator(so they installed a faulty radiator just only 2 months ago how bad luck is that)and a power steering return hose replacement recall F. Luckily we were going away for the weekend for our 10 year wedding anniversary at the Plaza NY and left the van for the 2 days so they could work on it. The check engine light turned out to be another sensor TSB EG4011 P0171 and/or P0174 (malfuntion indicator lamp on with dianostic trouble). So another sensor, thats 2 sensors and 2 new radiators in 2 months. I told the service adivsor I hope this is all and we do not want to be back for another recall/tsb visit. Seems like the radiator issue was probably when they had a shortage of radiators and got them from somewhere else? But we were not happy. But so far the van runs great no breakdowns hopefully. We do have the paint chip issue also there are over 10 chips that have been touched up with touch up paint, we have never had a vehicle that the paint chips so easily, we also own a 2004 Prius and that has had the same problem, I think Toyota is using a cheaper paint, although these are our first Toyota's has anyone had a problem with older models with paint chipping this easily. This is a problem Toyota will not admit to. These are not just little chips either, they go right down past the paint into the metal. We must get the bug deflector for the van.
The Lau Family
#1138 of 2209 Re: Tire Wear Problems? [mjenck]
Nov 09, 2004 (9:17 am)
Yes. I am at 20,000 miles and have excessive wear on the outer half of both the front and rear tires. The outer half is down to the wear bar. They are original tires on my 2004 Sienna and are Michelin Energy LX4 215/ 65 R 16's. The rear shows a bit less wear than the front, but my guess is we missed a rotation along the way. I am about to bring it to my dealer who has said over the phone they've experienced no problems with alignment on these sienna's. Fortunately I decided to check this edmunds site before bringing it down to the dealer. I will try to let you know how I make out.
#1139 of 2209 Re: Tire Wear Problems? [jimd2]
Nov 09, 2004 (9:33 am)
Were you running the run-flat Dunlops or the Bridgestone's?