Toyota Sienna Serpentine Belt Replacement 3.5L Engine (2007-2010)

Quick video on how to change the serpentine belt, also known as the accessory belt, also know as the drive belt, on the Toyota Sienna with the 3.5L V6 engine.

[@MattMuckleroy]

About the leverage, you can stick the boxed end of another wrench that is close to the size over the open end of the wrench, hooking it to the one you have attached to the tensioner. Thanks for this video. It will save me a lot of time showing how to feed a new belt into the best location to work with!

[@erroldillon1548]

I have a Harbor Freight 14mm off set closed wrench ( 9" long ) that worked perfectly on this job. You have the best video online for this job! You are correct that you don't need a special tool. With the Harbor Freight 14mm offset wrench you can move the tensioner with ease.

[@sheiladavies4452]

That little plastic clip should come off really easy. Just push the center button 'IN' and the little clip comes right out. To replace just pull the little pin center button out but not all the way. After the plastic clip is put in the hole just push the pin in to lock.

[@alyssamorris4150]

huge thank you for this video. I used the wrench at advanced auto parts that you can rent for free. that made it way easier.

[@billclark8241]

Damn girl good for you doing this job- Yo Go

[@erroldillon1548]

This was fantastic! You did this better than any video I’ve seen on KZbin! Thank you soooo very much! God Bless you!!! Everyone I've seen do this video going into overload. You showed how to without special tools. Most video say you have to use a special tool. You are on top of your game!!! I hit "subscribe". That's something I seldom do.

[@ocdmachine]

Best video yet on installing the belt, much thanks!

[@davidjung3819]

Great vid,changing belt now!

[@1smoothlander538]

Excellent video and explanations. Thanks for putting it out.

[@radicalchange]

I saw others videos where the owners loose like 5 🔩, this guy just pulled 1! Sooo easy and we'll explained! Great vid ever!!!

[@lejoshmont2093]

He had to pull 2 bolts to remove the lower cover.

[@rhettsgrandpa853]

Thanks so much for the belt diagram

[@systemfailed9106]

Great Job, My 2007 Toyota Camry has the same engine with slight differences but your video really help! Thanks for putting all your hard work to educate us.

[@lejoshmont2093]

It is very similar to the Avalon as well

[@ql2866]

Thank you very much for the video. Yes exactly on my 2007 Toyota Sienna 3.5 L. Thanks again.

[@kerrief6233]

Good video but I found it better to release tension from under the van. When you release tension, there is a hole and slot that will line up and you can slide a very small screw driver into to keep the tension off. I didn't need a cheater bar, just a plan 14mm wrench to release the tension from below.

[@diydave643]

•Kerrie• [F] Concur with this (rotate tensioner from below) 100%. I just did this job on my 08 tonight (6/29/18) as part of an oil change. I don't see any way I could have managed this trying to work the tensioner from above. Below wasnt a picnic, but I got it to work. And routing the belt correctly is much trickier once you're amid the job! Thought I had it done until I saw I routed it on the wrong side of the rear pulley... Argh!! All in all, job with oil change was probably 2ish hours. Thanks for the video.

[@zacharycrawford4833]

I can see releasing the tension from the bottom of the van if I were working alone, but I released the tension from above easily while my son went below and stuck a drill bit in the hole to keep the tension off.

[@HsingSun]

Thank you for this video. I like to learn and do by myself.

[@lejoshmont2093]

You can also use another wrench say a 15mm to make your 14mm a long reach. So if you already have a wrench set you don't need to track down a pipe to go over the end.

[@neo-neuronsconcept7749]

Thanks so much for the video, it was so helpful!

[@carllinnington]

Awesome video, very helpful. Thanks so much...!!

[@DIYOneForAll]

Nice job buddy.

[@paulc6747]

Thanks! This is exactly what I need :). I got the same Sienna 2005 3.5 engine and with 90K, I think time to change the belt.

[@carltoncarlton-ew4fj]

I thought the 2nd generation Siennas pre-2007 were 3.3 L engines?

[@lejoshmont2093]

Accessory belts are one of those things that you replace when they show signs of wear not necessarily millage.

[@l.m.g5136]

Thanks for the video u saved me a hundred bucks.................thank you Thank you

[@adanhernandez9673]

👍 excellent video brother.thank you very much.

[@rexazulunam1]

Excelente video, nice work

[@erroldillon1548]

The 5mm Allen or hex wrench is placed in a hole inside of the tensioner. It’s at the bottom of the tensioner. I ordered a 16” Platinum wrench for this job.

[@sergeyilyin4290]

Thank you. Made it easy.

[@mikeyosoft]

I thinking that nobody showed you how to double up 2 combo wrenches for length and leverage.

[@lejoshmont2093]

That's a life hack there.

[@alyseorr3109]

Worked like a charm...

[@simonthompson474]

very help full cheers mate

[@jasoncoopersmith]

Thank you! Great video!

[@happywrenching]

Belt diagram can be found at 2:35

[@walter.bellini]

Good video thank you for making it

[@lesterpenner8786]

Nice Video. Looks like any Toyota with the 3.5L would have the exact same belt.

[@lejoshmont2093]

I think the RAV4 might have a different pulley lay out he mentioned something about that when he did the engine swap.

[@thesolpurpose3109]

Is the tensioner pulley itself hard to replace when you're in there.. mine vibrates in the videos I'm finding aren't the year of my van

[@messygreasyhand5465]

great tutorial. Mind describe the symptoms lead to belt replacement? I have a 2008 camry with same engine. I am hearing squeaking noise from this area, and tensioner pulley is rattling. Is that a sign to replace the belt as well?

[@puffyelvis5895]

It’s a good idea for a vehicle of that age. Symptoms to look for are squeezing or chirping from the belt or signs of wear upon physical inspection, such as cracking, fraying or brittleness.

[@mustang73648]

Thank you for sharing this Video

[@erroldillon1548]

I just found out that there is a hole that you should put a 5mm hex wrench into it. It will hold the tensioner pulley in place.

[@thewishmastur]

Where is that hole?

[@erroldillon1548]

@@thewishmastur It is by the tensioner. Move the tensioner and it is there.

[@erroldillon1548]

I just sent you information on where the hole is. Look at the diagram. It’s on the tensioner at the bottom right. Not many people know about this.

[@erroldillon1548]

To see the hole you have to move the tensioner to the left. I forgot to tell you this important detail. You can not see the hole until you move the tensioner to the left using a wrench.

[@derrichopetubbs7058]

Thanks for this

[@justinh2221]

super helpful

[@jubyloo2]

What tension should the belt be after install?

[@jackymabborang1010]

Great video! Do you have a video tutorial on how to replace the Tensioner as well? Thanks!

[@condor5635]

I wouldn’t bother doing the tensioner. If you think there’s some issue with noises from the tensioner replace the two idler pulley‘s and buy a tensioner pulley and install those three pulleys. That will probably solve 95% of any problems related to the noises. Removing the tensioner you essentially have to take this whole engine apart. No kidding it’s not easy. There are aftermarket tensioner pulley‘s because it’s slightly different than the other two identical idler pulley‘s. Toyota does not sell the tensioner pulley by itself only as a part of the entire tensioner bracket assembly. I just replaced all three on RX 350 and it was essentially the same job he just did other than removing the pulleys and replacing them. Much quieter vehicle now. Great video by the way

[@lejoshmont2093]

@@condor5635 Well he does have a video on how to remove the engine so I guess you could do the tensioner assembly.

[@joegotyoutuification]

Good diagram in the beginning

[@kabirmusa879]

Well done

[@Sig220Euro]

You don't by chance have a vid on how to swap the alternator? Doesn't seem to be any vids on doing it o the newer 6cyl. I have a 2011 and dealer wants $700 to put in a rebuilt. I can get a rebuilt for under $200 but this thing does look to be buried compared to ones I've swapped before.

[@scottthornley5405]

I know this won't help, as it's out of date, but maybe someone else can benefit - there's a video of someone replacing the alternator on a 2008 Highlander V6. The Highlander has an identical layout as the Sienna V6. I was amazed at the ease at which the belt came off for him. It was a major pain dealing with the tighter clearances in the Highlander...

[@lejoshmont2093]

The alternator is probably the most accessible accessory on that engine. For future reference you can always get a couple day subscription to tis it should show you where the bolts are and what the torque for them should be.

[@erroldillon1548]

This is the wrench you need for this job. You will be using the 14mm end. PLATINUM 99662 XL RATCHETING WRENCH, 12MM X 14MM, 15.56" LONG

[@bikemancody2752]

Thank you

[@diydave643]

About how long should this replacement take?

[@xdigitalxmau5x]

I'm having trouble getting the belt to fit around the crankshaft pulley seeing as there is a metal tab sticking out preventing the belt from fitting on.

[@xdigitalxmau5x]

P.s. great tutorial , how did you fit belt around crank pulley with metal tab preventing installation

[@user-wo7rz3yn4o]

Is there any worry that the engine will get out of time when you remove and replace the belt?

[@happywrenching]

That's the serpentine belt so there is no connection to engine timing. You can even briefly run the engine without the belt - though keep an eye on coolant temps so the engine does not overheat without a running water pump.

[@user-wo7rz3yn4o]

@@happywrenching yes of course! I've gotten myself confused with a couple different engines on my mind right now. Thanks.

[@paulgarcia3797]

Would this be the same as a 2009 xle 3.5 toyota camry v6?

[@lejoshmont2093]

If it has the same engine it probably will be. Just be sure to check the belt routing is the same before you take it off so you can put it back on the right way.

[@biradorfam9330]

hi how many miles before you replace the belt?

[@carltoncarlton-ew4fj]

On the service manual from Toyota, they say check the condition starting at 60,000 miles , then every 15,000 milesthereafter. But my first belt was going strong at 130,000 miles. I had it replaced only because the mechanic had to pull it off the car when the water pump went bad. Now, I have 265,000 miles and still have that drive belt on.

[@keithbailie3014]

@@carltoncarlton-ew4fj Yah I have 160,000 miles on my 07 RX350 and I don't know if the belt has ever been replaced. I do think I need a new idle pullley, have to diagnose what seems like a bearing issue . Are there two idle pulleys in these motors?

[@lejoshmont2093]

@@keithbailie3014 There are 2 idler pulleys in addition to 1 tensioner pulley

[@princeademola1246]

What is the belt number??

[@davidcruz4611]

Can you do it without removing the wheel?

[@lejoshmont2093]

I wouldn't recommend it. Removing the wheel is so much easier.

[@ranz9688]

I am surprised that it is counter-clockwise to loosen the tensioner on the sienna. It is clockwise to loosen the tensioner on my 2002 Camry.

[@carltoncarlton-ew4fj]

Good question. On my Chevy Cavalier, it was clockwise and there were only 6 pulleys (no idler pulleys)..

[@lejoshmont2093]

That is a pretty different engine though.

[@noxcube6439]

Looks so much like a Toyota Avalon 2011 3.5 engine

[@paullau7753]

Thank you.

[@radicalchange]

But that toyota sienna has the serpentine belt more longer than my 2004.

[@kabirmusa879]

2gr fanbelt Number

[@quonsetthehutt3105]

2:36

[@786variety]

Wheel lug nut suppose to be 110lb torque

[@Rational20]

According to the Toyota manual for the 2009 Sienna the wheel lug nut torque specification is 76 foot-pounds.

[@lejoshmont2093]

I know 76 is a very common torque spec for Toyota wheels. 110 seems high.

[@thewishmastur]

@78.. you are out to lunch torquing it to 110lb.

[@motokev2727]

Not much room, thanks toyota

[@bryanzhang9023]

Zz