Installing Rear Struts in a Lexus ES300

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So after several months of delays I have finally installed my rear struts in my 1995 Lexus ES300. What a pain it was. You have to remove the entire back interior to get to the strut top nuts to remove them. It basically works like this:

1) remove the sitting area of the back seat. This is easy just lift up the back seat. There are 2 simple arms that sit in a catch on the floor.

2) Remove the backs of the back seats. There are 2 bolts at each lower corner that hold the seats in place. Once these are removed you simply lift up the seats. You may have to get rough. There are hooks on the back that sit in catches. These have to come out to free the seat back.

3) Take off to interior side panels over the back doors. These are held in place by snap in screws just simply pull off the panels. Start from the top area over the door and work your way back to the area over the back shelf.

4) remove the back 3rd brake light. It is simply held in by some simple hooks. Just grab it and pull it back and disconnect the light.

5) Remove the back shelf with the speakers. This item is cheap and I heard lots of old crappy particle board breaking as I moved it. I think the best advice would be to remove the seat belts at this point but I was too lazy. I just undid 6 black plastic screws that are running along the side of the shelf. 2 are under the seatbelts. Then I slide the shelf down still attached to the seat belts so I could get it out of the way and access the rear strut top screws. This whole process took about 15 minutes.

Now you are outside.  You have to jack up the car in back, but make sure you loosen the lugs first so they are easy to remove once the car is on jacks. Remove the rear tires and there are 4 areas you have to deal with. There are 2 lines that attach to the strut. They must be unscrewed. I believe they use a 10 and 12mm socket. There is also a nut attached to the suspension that has an odd hex head in the base of the nut. You will need to use a crescent wrench and an allen wrench to hold this nut in place while you undo it. It was rusted some in my case and was very  challenging.

The most challenging part is the strut lower bolts. These are 19mm bolts and I highly recommend a 1/2″ socket to remove them. They are very tightly screwed onto the strut. Make sure you attack from the nut side, not the bolt side. Otherwise you won’t be able to loosen then. I blew 2 -3/8″ extensions going for the bolt side before I purchased a 1/2″ extension and went after the nut side. Once this is done you need to remove the 3- 12mm  nuts inside the car up top holding the strut in place. These are fairly easy to do. The strut is difficult to wiggle out from under the car, but it will come.

I decided to keep the spring and strut mount. You may want to do that depending on your situation. If you have a completely new strut all you need to do is install it. This part goes fairly quickly. It took me about 2 hours to get out the struts, but less than half that to get them back in. You waste a lot of time breaking rust and finding your sockets. This is definitely a project for someone comfortable working on cars. I don’t recommend it for people who are novices. It is complex.

Make sure you have a good set of metric sockets and a 1/2″ rachet and sockets to undo the struts.

Update: After having driven the car for a few weeks I would recommend changing the entire strut. The springs which don’t particularly look worn, apparently are and are squeaky too. I am not thrilled with the sound the car makes going over potholes. If I had it to do again I would definitely recommend a full replacement.

Amazon has these turn key Monroe Struts at a great price. Im planning on getting these next go round.

Rear Left:Monroe 171958 Complete Strut Assembly

Rear Right:Monroe 171957 Complete Strut Assembly

 

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This article has 4 comments

  1. jr 07/13/2010, 1:03 pm:

    I have a 1992 lexus es300 and I was wonddering how to rplace the whole interior on it ? theses directions on your post should help with the back but whta about door panels and dashboard?

  2. Anthony Blando 08/17/2010, 4:03 am:

    I have two bent rear struts and I am thinking about doing this my self… Great information. I would have never know to take out the back seat… Thanks.

  3. Blake Neal 12/07/2010, 9:21 pm:

    This was exactly right, even for a 1996 Lexus ES300. It took a while because I didn’t know exactly what I was doing, but thanks to this walkthrough, I didn’t spend a whole day on it!

    THANKS!

  4. Austin 12/21/2011, 11:25 am:

    Thanks for a great description on how to replace the rear struts on the ES300. It took me the better part of a day to do this job because I had problems with the 19mm bolts on the passenger side braking loose even with an impact gun. Best advice is to liquid wrench or WD40 the nuts and let them sit for an hour. They came right off after that. Use a medium extension to get around the brake assembly. Not sure why they put the nuts on that side. I installed them on the opposite side during installation.

    I started to follow your directions on #3 back panel removal and realized the 3 nuts at the top of the struts are only hidden behind a foam block by the seat belt. Remove the foam and you can easily use a 1/4 drive deep-well socket to remove them. I added a swivel for the back nuts. Much easier than climbing in the trunk with a pair of pliers to get at the clips and then hope you don’t break the panel getting it out. I didn’t have to remove the side panels either.

    This job shouldn’t take more than a day even with hand tools.

    Now to start on the front struts. I hope it goes as smooth as the back ones did.

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