Toyota Tundra Forum

This is a mod to allow your double cab rear seat back to fold. "Nisbo" a member over at TS did this mod. I decided to try it.

The tools required are a 14mm socket (a couple of various size extensions help). A T30 Tork bit (6 point star) and your choice of a hack saw, jig saw, grinder or cutting wheel.



I have the under seat storage tray so remove that if you have it. It is held on with four fasteners that you can turn with your hand.

Fold up the seat bottoms.



Now remove the six 14mm bolts that hold the seat in place. There are two bolts per seat support leg. Each leg has one bolt that holds it to the floor and one to the rear wall of the cab. (*You might be able to get away with removing the bolts that hold it to the rear wall of the cab and just loosening the ones that bolt it to the floor. I removed them all).




Once the bolts are removed, lift up on the seat assembly with the seat bottom in the up position. I did the small single seat section first to try it. What you are trying to do is lift the seat back enough that braket that hold the seat back in place clears the metal loop in the wall of the rear cab. You can see these loops in the below picture. They are body colored. In this picture the seat back has been lifted and unhooked.



At this point I reinstalled the six 14mm bolts in the three support legs. Do this, but leave the seat back folded forward.

Then I removed the four brackets that hold the seat into the loops. The Tork (star) bit is needed. I have heard that some folks have cut the bracket in place, but I did not want to do it that way.

In the below picture the loops on the cab wall are highlighted in red and the brackets are highlighted in yellow.



These are the bracket once they are removed.



I cut about 2.5 cm or 7/8 inch following the contour of the original bracket.

This is a before and after comparison picture.



Here is a size of the cut comparison.



Once the brackets were cut (I used a hand held grinder and a vice) I used a file to remove the rough edges and used back spray paint for a finished look.



Now you reinstall the brackets. I suggest hand tightening the brackets to do a test fit. The way you operate the seat back is that you fold up the seat bottom because this raise the seat back as well. It should raise the seat back enough to clear that loop highlighted in red above. Then when you lower the seat bottom, in lowers the modified bracket into the metal loop to lock the seat back in place. You can also still lock the seat bottom in the up position as well; just raise the seat bottom as normal to until it locks in the up position.

Go fold up the bottom of your seat to see the motion I am trying to describe.

Here it is folded down.



The seat backs still lock in place for normal use and there is no worry about the seat coming forward un-intentionally (I guess that is possible if you cut a lot more off the bracket that I did.)

The finished product. Don't forget to tighten the Tork bolts after your test fitting.



I might add some plywood or some solid surface to the back of the seat to cover the foam.

I wish I had done this mod before installing my seat covers...it would have made life easier.

All in all it took me about 1 1/2 hours because it was about 95 degrees today and I took cool off breaks.

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2007 Tundra 5.7, Double Cab, SR5, Blue Streak

TRD (stickers removed), de-badged, Volant Intake, Zoomers exhaust , Doug Thorley headers, Leer 100R, Bedrug, Curt front mounted hitch, Sirius interface kit, Tekonsha Prodigy brake controller, OEM alarm activation, Wet Okole seat covers, Stubby Antenna, Folding Rear Seat Mod for Double Cab, Unichip

Nice job Tony. I've heard of several people doing this, but none gave pictures to show how.

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2007 SR5 Crewmax 5.7L 4x4
Mods: nerf bars, Truxedo tonneau, radar detector power, 3M clear bra, fog lights, black billet grille, rear differential breather, parking sensors, Line-X, power tailgate lock, hood safety latch mod, one off driving lights behind grille, Pioneer NAV w/ OEM camera, Flowmaster 50 SUV dual/dual, blue LED dash lights, Volant CAI, Llumar tint, CompuStar Pro alarm, ProComp 6066 20" wheels, Cooper Zeon LTZ 275/60/20 tires, OME HD coilover lift, Firestone helper air bags, stereo cable lock, Tekonsha P3 brake controller
All mod descriptions and pictures © 2007-2009 by Toxarch. They may be copied only for personal use and the mods may be done for non-profit only.

Thanks. I am trying to uphold the DIY standards you have set. I am not in your league, but I am trying.

wow, cool tony. thanks for the write up.

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You can never get enough of what you don't need to make you happy.

Wow Tony, great DIY mod. May have to do this one myself as I am constantly thinking; "now, if the seat backs would just fold down!"

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2007 Tundra Limited Double Cab 4x4 Super White
Volant CAI
Pioneer AVIC Z-2 (hard drive upgrade to AVIC Z-3)
Key FOB Tailgate Lock (courtesy of Toxarch)
OEM back-up camera w/flip down monitor microswitch mod
Sirius Satellite Radio
WeatherTech Floor Liners
20" OEM alloy wheels
Line-X Bed liner
UWS Black Powdercoat Low Profile Toolbox
DU-HA underseat storage unit
JC Whitney Black Nerf Bars
Lund Interceptor II Bug Shield
Tekonsha Voyager Brake Controller

Gotta add that to my "to do" list. Nice job!

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07 DC SR5 Long Bed Desert Pyrite Mica, folding rear seat mod, Raptor step bars, OEM back-up camera, "iPod in the ashtray", Toytec 3" leveling kit

How much room is actually behind the seat? enuff to install a subwoofer or such

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07 TUNDRA 5.7 DCAB TRD
TOYOTA FULL BILLET GRILLE KIT
07 CAN-AM OUTLANDER 650XT
27" MUDLITE XTR'S

Not owning one, I would guess there is room for the amps, probably not a sub.

There are about 2 1/2 inches behind the seat when it the seat is "up" and about 4 inches when the seat if folded down. Amps would be fine, but a sub would be tough.

thanks dude, might be able to do a hell of a amp setup back there then , and leave the underseat for the subs