How to Replace Spark Plugs Toyota Highlander V6 2000-2007 

Thank you for this video. It was going to cost me $600 to get my plugs and one coil replaced. After finally getting to the rear plugs I went ahead and changed all three rear coils just so I don’t have to do this again anytime soon. Couldn’t have done it without your video. I also now understand why the cost was so high. Very labor intensive.

“I refuse to talk to automotive engineers at parties” dude this is classic😂

This helped me understand why changing the spark plugs takes so much labor.

This video is very good for changing rear spark plugs and chance to clean the manifold at the same time. However, if you have small hands and arms and don't want to spend a lot of time to remove the manifold, throttle body housing, and its extension then you can try change the rear spark plugs using your right arm. Use your right hand, from the right side of the manifold (below throttle body housing) going left just below the manifold. Before removing the rear spark plugs you need to remove a few things around that area like cruise control cable and its bracket which is in front the manifold and throttle body housing. This step helps create more room for your small right arm. The hardest part to remove is the middle rear spark plug electrical connector. Once you remove it then it is not too hard to remove that middle rear spark plug. I was able to change my 2002 highland this way because my hands and arms are small. I suggest that anyone having small hands and want to change the rear spark plugs then first try to see if you right hand is small enough so that you can feel there is some room for you to remove the top screw of the middle rear spark plug and if so then you can proceed. As for the left rear spark plug I removed a few things to the left of it to create room before removing it.

Hi Ryan, I just used your video to change the spark plugs on my 2006 V6 Highlander. This was a great video, although there were some differences with the vehicle in your video, I would not have been able to do this without your video because of the great level of detail and step by step descriptions. So you can get an idea of my level of experience, the extent of my experience was changing the brakes on my Highlander. I will say that I tried tried cleaning the throttle body based on your secondary video but wasn't able to get the throttle body off of of the intake manifold. All in all, the project was a success...thanks for the video!

Thanks for taking the time and effort to make this educational video! Im not a mechanic but your video gives me the confidence to get it done. Keep it up and AWESOME JOB!

Such an underrated video. I'm super impressed and grateful for you uploading this. This makes my car buying experience much more informative when looking at the maintence I'll have to do. 👌🏼

You are very honest,very thorough and highly informative. This was exactly the walk through I was looking for, Thank you!

Really appreciate this video. I'm about to replace spark plugs for 2004 Highlander. This video is most helpful. Thank you so much!!!

Great video, one of the best how to videos I've seen. You explained everything clearly for the simple minded man I am lol. Thanks

THIS WAS THE BEST INSTRUCTIONAL VIDEO. THANKS SO MUCH. GOING TO ATTEMPT THIS WEEKEND

This was perfect. I did just as you posted and changed the plugs with ease. Thanks!

Thank you so much for making this video. I picked up an 08 hybrid Highlander and aside from having 2 of those hidden manifold screws, it was spot on. You are a lifesaver.

The best video about hillander and sienna to reach rear coil i thought i was gonna telm my friend to take it some where if anything happen but after this video i can do it easy you make it look so simple thank you so much

Thanks for the help ! I just replaced the plugs in my 2003 Highlander thanks to you!

Thanks, this helped me change my plugs on my highlander.

Thank you 😊 this job looked intimidating. Now I have some knowledge. I just need to the parts

You did a fantastic job on this video. Thank you so much for sharing. Great Job.

Thanks, I have to do this soon, and this video is a great resource--very helpful and well explained.

Thank you for your fully detailed instructions. You are the best. I'm grateful for your help.

I did this yesterday and learned some things. If you don't have a plug you can use a tire valve cap. For removing the bottom bolt connecting the throttlebody from the intake manifold you can use a long extension instead of a ratcheting wrench to not risk rounding out the bolts.

Thank you! Very easy to follow (I was lucky, I only need to change the #4 coil/plug). Saved me a bunch of money. Your explanation was clear and concise - well done!

I just took a part in 04 that had all six of the original plugs at 270,000 miles iridium plugs were probably in the worst condition I've ever seen sparkly but they were still working pretty good actually

Great video and tips!!! I did back set plugs without removing anything and aparently with gumby hands lol it was not easy takes patient and wrist breaking

Well done great video anybody can do this if they just follow your detailed steps!

Man I am not excited to jump into doing this tomorrow. Gonna be a all Saturday project it looks like ,2 days if I lose my patience. Thank you for the detailed video and listing all the sizes needed before tackling this ,extremely helpful. All though I’m teetering on paying someone else to this for me for the first time in my life. Getting too old for this.

Thank you for the TOYOTA Highlander KNOWLEDGE INSANE engineering I Love Toyotas

Great video, thanks. I have been dreading changing the plugs and will do them on another weekend while saving up some curse words.

Excellent video. Many thanks.

So I suspect it would be beneficial to go ahead and change plugs if replacing the valve cover gaskets ?

Thanks for the excellent explanation, now I am ready to do in my 2015, hopefully they are the same.👍🇨🇦

Thanks for this video,it’s really helpful

very informative...probably, I'll have to watch this several times in order to get familiar with it.

Great job and very educational!

Thanks for this, I have been dreading to do this dor a while now. I was able to take out the far right one without removing it but the other 2 are still there.

Perfect!! Good job👍

Good job, thanks for sharing.

I just recently work on one replacing the knock sensors and that 14mm bolt in the back gave me such a headache. I found it so much easier to go under the vehicle and get the volt from the bottom. Took me like a minute to take off once I got it from down there. Just FYI for next time or for someone in the future!

"Forget you bolt". Very nice. Cee Lo Green. Great tune.

Thank you for saving me tons of money! I desperately needed this done and I’d rather do it myself since I have the time but now the money 😅 🙏🏼 thank you!

Clear and simple to follow video! Very helpful, thank you :-)

Thanks, Just got the '03, will help when I change the Plugs, using NGK Iridium. Alternative was Denso. NGK worked fine on my Dirt and Street Bikes, so I chose NGK? When I have to Repeat A Procedure, Weather Electrical, Electronic, or Mechanical, I say Same thing. "Second Verse, Same as the First" Been saying for Years, never heard anyone else say. Unless they were Singing. Thanks, checking Throttle Body Video next. Thanks again

There are a lot of unholy reasons why automotive engineers do what they do. Gotta change my mother in laws Highlander spark plugs soon.

Tank you for this video, it’s a good job.

Thanks for the tutorial. This part actually doesn't look very bad. The throttle assy with it's vac lines, coolant lines, linkages, and electrical connections seem like more of a headache

Do you have a video showing how to locate and remove the EGR valve for the same highlander in this video?

Thanks this video was very helpful

Thank you, I hope I can do this coming weekend 😅

LOL, yah we put it back!!!! love it.

That 14mm on the back is definitely the most difficult part. That might be why this bolt never gets mentioned in any of the videos. :D

Just did my knock sensors…. Now when I start it, it dies, or rough idles, until it settles out. If revved up it bogs until it overcomes enough to raise rpm’s. Any ideas what it could be?

Do you know what that bar with all the vacuum tubes is called by I broke the plastic nib for one hose and idk what it’s called to get a new part

Great video brO... it helped me out... 💯👍🏼

Thanks for helping me fix my car!

YOUR THE MAN!!

Great video!

Great video!! Thank you for sharing the goods with us. I just bought a 2002 Toyota Kruger(Highlander) v6 3L imported from Japan. I love it! It only has about 76,500 kms on it, and is in excellent condition, so I feel really really fortunate to have found her. Watching everything I can about this vehicle. How many "shop hours" should I expect a non-toyota shop to charge for the labour on the sparkplugs replacement? Thanks alot!!

Do you need an air compressor for the driver or will a battery powered one work just as good?

Thank you for the amazing guidance. I will subscribe

Best video, thanks for sharing

Grear job man!!

Very Good Video. Thanks.

Thanks for that, much appreciated, now my task is not so daunting.

do you need to take the throttle unit off or can you keep it on?

The step-by-step tutorial will help me replace the spark plugs where the intake manifold is. I suggest that since 1, 3, and 5 positions are complicated to work on, I will also install new ignition coils, so I don't have to worry about them in future. Just a thought. I really appreciate the video. Thank you.

HI, Please give me the link for throttle body removal for this engine, I could not find it. Thanks.

Thanks for your help! I just changed my 2007 Highlander's spark plugs. My intake manifold is plastic and I couldn't get the rear bolt back in. I hope it's fine!

Hello where can I find the tool to open behind 14 mm bolt and what that call please let us know I appreciate

So how did you get that 14mm bolt out that held the intake manifold in near the firewall? Did you use a socket or wrench?

Thanks very helpful

nice tutorial

Thanks for your effort of a good video. And an opinion on the Antiseize debate...None of the plug manufacturers recommend antiseize on plug threads. Modern plugs have a coating to ease removal. Also, lubricants affect torque values. And...lubricants are detrimental to heat dissipation. See NGK, Bosch and Denso.

On my 07 3.3L, there is another mounting bracket that holds the intake manifold on the right side and sits at a 5 or 10 degree angle downwards, just to the left of the throttle body. It is in a tighter and worse position than the left mounting bolts that was shown in this vehicle, which I was able to get with a 14 ratchet wrench. It is also worse than the throttle body mounting bracket bolt. Unfortunately, the other bolt seemed to be stripped prior to trying to get it off, hopefully the shop can cut it with a torch. Literally one of the most grueling ordeal Ive dealt with haha. What an awful design just to change spark plugs. All because of a bolt you cant see, who hires these idiots? Thank you for the video, it is well done.

Good job Thanks

got an 05 highlander, is it okay just to replace the 3 easy one for now and then have some pro do it later on?

Ryan Can you make a video on how to change an AC compressor on a 2005 Toyota Highlander. Thanks. Your video are so precious and details. Thanks

Have any videos on Hyundai Santa Fe repairs?

Awesome job! Haven't worked on that motor yet. Lots of work to change plugs. I understand the oil filter on this car is a hassle also. Not what I expect from a Toyota. What plugs do you recommend?

Ryan, ever done a 2011 Highlander? I need to do this on it. It looks similar but I heard you have to take a lot more off from the 2011. Great vid! Thanks for sharing. Sub'd!! Please do more on the Highlander.

Have you don this on a 2000 Lexus RX 300?

I used a 1/2 inch socket 14mm and socket wrench it fit but the 14 mm bolt from hell was still a job.

NICE VIDEO

The reason for that manifold bolt by the firewall is to help support the weight of that heavy manifold it takes that excess weight off of it

Thank you!

Did you inspect the spark plug holes for oil leakage? Normally that will let you know how the valve cover gasket is doing.

Thanks for making the video. Had to replace cop on #3. It would have been a bear without this video. Now I need to replace front head gasket. Did you make any videos on that. Doesn't look to complicated but any help would be good.

Do I have to remove the battery cables to replace spark plugs? I didn't see you do that but just making sure. Thanks.

Las de enfrente es muy facil pero las de atras son dificiles saludos de aqui de Chicago

I KNOW I LIKE 4 CYCLE MORE NOW. I GOT TO GIVE TO HIM THIS IS NICE TO LEARN ABOUT.

😆 yeah. Automotive engineers of this car answer to Darth Vader. - Thank you. Great video. Great work. How did you get the stubborn nut out?

Could you just take out the intake bolts and grounds and move the entire assembly back a little without taking off the throttle body to get to the rear spark plugs?

This looks like too much work, lol. I may just pay someone to do it. But thanks for showing me how much of a pain it is. That bold in the very back that you couldn't get a wrench to, I think that was the deal-breaker for me.

Thank you for the video 👍I'm getting a #6 misfire code and I'm guessing it's the coil wire.It is in the the front an easy job

Thank you

GREAT VIDEO !!! I have to say, I am unsure of your accent, but your voice is extremely similar to Max Headroom (that is meant as a compliment!)… probably not the first person to point that out I’m sure… Anyway, really really awesome job on the video!

My anxiety meter pegged out after I noticed the leaf layer on top of the cowl and the intake plenum was open😬

Curious I have an 04 with the 3.3 engine is the process still the same ?

really cool

Hey CarPros, after you get that intake off, can you easily access the knock sensors and harness? Asking cause my grandaughter's Highlander needs both new plugs and knock sensors. Great video, now a sub.