My 2014 Sienna is just under 120k miles and coming up on the replacement interval for the spark plugs. Our local dealer wants $1500 to replace all six, that's like 20% of the car's trade in value. I called up an independent repair shop, they advised to just keep driving the car and come in for replacement if there is a problem.
Stealer wants $1500 to replace spark plugs
Blahbler
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I use jiffy lube. They normally do it for about $200
It's high but we can't complain much. Toyota Van designers were not thinking about Spark Plug maintenance when designing these 2nd and 3rd Gen Sienna. It's probably a 6-8 hour job if you do it yourself. 2-4 hour job if done at the shop/dealership. Just bad design for maintenance. Just look at how much you have to tear down to get to the 3 back plugs.
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770 Posts
To change the plugs ? Did you actually have them do this and watch them ?
I wonder if they don't change the back ones.
Some of those shops have been caught faking oil changes, so I don't see how they could do it at that price.
2016 Toyota Sienna XLE,2013 Toyota Corolla LE, 2017 Lexus ES350
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79 Posts
No way i would pay $1500 to change those plugs.
That is an exorbitant price, The back 3 plugs are impossible to get to with moving the intake manifold. So, I can see maybe an hour or two at $150/hr. $1,500 is ridiculous.
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Yup! I've done it a few times and is a pain in the butt, but not that difficult.
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Hehe.. I don't trust them for oil change, I won't trust them doing spark plugs. The sienna is a little involved. And you're supposed to change the plenum. I go with OEM orange, that's how you know it's been done and updated.
My point is that the shop that did mine charged about $500 in labor.
I want to see you do this job in 2 hours
Highway robbery and I don't give a crap what pretext they use.
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32 Posts
No way. Jiffy Lube won't replace spark plugs in a 6 cylinder Sienna for $200. Even if they did, they would probbaly cause more damage than the price of the spark plug replacemenmt.
For those coil connector plastic tabs that always break when disconnecting them, there's quite a few youtube videos on how to swap the connectors our without cutting wires, replacing the connectors. I ziptied mine but after one of those heated and came loose, decided to replace with these $14 connectors:
Just takes a small screwdriver to release the OEM wire and plug back into new connector and good to go.
Like others, it took about 3-4 hours to get the back ones done, but that included replacing valve cover gasket because a couple of my spark plugs tubes had oil in them, so replaced those tube gaskets as well.
Just takes a small screwdriver to release the OEM wire and plug back into new connector and good to go.
Like others, it took about 3-4 hours to get the back ones done, but that included replacing valve cover gasket because a couple of my spark plugs tubes had oil in them, so replaced those tube gaskets as well.
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140 Posts
I am repeating I know, but the front 3 are easy, the back three are the devil. Still $1500 is really high. Its a good bit of time taking things apart to get to the rear ones.
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1,419 Posts
Like this lol. It's time consuming because everything has to come off and you have to remember where it all goes in but not difficult. Trust me, much easier than lower control arm or passenger axel.
While in there, clean the throttle body.
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681 Posts
I changed the plugs in my 2021 sienna at 175000 miles. they didn't look new, but they weren't heavily worn when compared to the new ones either. They were not causing problems either, I just changed them to gauge how long I can run them. Plan to run the next set until 400k, and just change them before problems develop.
My old cargo van didn't get the plugs changed until 378000 miles. Factory original plugs lasted that long before they even started misfiring. They looked like someone took a file to them, but the damn thing still started and ran perfectly fine. If you are just doing near 100% highway driving and the vehicle is running clean, then your plugs can last a lot longer than the 125k interval for iridium's.
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681 Posts
oh, and these are the plugs I took out of my sienna at 175k. They don't look terrible, but don't look too worn either.
![Image]()
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1,419 Posts
60k or 10 years like what "car care nut" says to do. Lol
Why would they be thinking about 120,000 miles down the road???
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