How-To: Replacing an exploded rear window

emoore924

New member
This is a how-to for replacing an exploded/broken rear window on a 2005 T4R. I think 2003-2008 are the same but YMMV.

If you find inaccuracies, please let me know and I will make the correction.

WARNING: THERE ARE ZILLIONS OF SMALL SLIVERS, SHARDS AND PIECES OF GLASS EVERYWHERE. DO NOT PROCEED WITHOUT SAFETY GLASSES AND THE APPROPRIATE HAND PROTECTION. I learned the hard way and bled at least three times during this project. You do NOT want to get any of this in your eyes as that would mean a guaranteed trip to the ER.

This is a easy-medium DIY, about a 4 on a scale of 1 to 10 where 1 is checking the air in your tires and a 10 is rebuilding your engine. It should take a competent DIYer about 2 hours to complete this repair.

Why am I doing this? My window exploded and vaporized itself one cold morning. I think the defroster had just turned off but it was on to clear the mirrors. There was little to no snow/ice on the rear window. Then BOOM, window vaporized. A sad state of affairs.





This is how I went about fixing it.

Here are the tools I used.



First I cleaned up the mess. This meant vacuuming up the glass from the weathertech mat and from the carpet, from all the plastic trim in the back (amazing where it goes), in the rubber seals, and also picking the glass out of the weather seal around the door where the glass fit before it broke. I used the shop-vac to suck the glass up as I picked it out of the seal.



I removed the window seal and cut a piece of sheet plastic to keep the weather out. I replaced the seal and used some packing tape to pinch the plastic in place. Worked fine for a couple of days until the new glass arrived. Keep in mind that the vehicle is NOT SECURE with a sheet plastic window in the back so don’t leave your gold bullion and jewelry in the car until you get the window fixed.

Once all the cleanup was done, I ordered the glass from an eBay seller. $140 shipped to my door. It looks like there are several sellers out there for the $135-145ish price range right now. Pick your poison.

I then went after the shards of glass in the door. Tons of it falls into the bottom of the door, into the raise/lower mechanism, and hangs up in the door frame. So you need to carefully remove the plastic door card to get to the inside of the door. To do this:

Remove the little cover plug and remove the 10mm bolt that holds the door pull strap to the door frame.



Pop the plastic door pins out with a trim tool. Then carefully pull the bottom edge of the card out and push it upward to remove it. Keep in mind there is a seal on the top edge of the door card that hooks into the top edge of the tailgate that you do not want to damage. BE SURE YOU’VE CLEANED THE GLASS OFF THE TOP EDGE OF THE DOOR CARD AND DOWN IN THE SEAL or you’ll get a face full of glass shards.



Once you have the door card off, carefully remove the sealing plastic from the door frame. Preserve the bead of adhesive stuck to the plastic so you can re-stick it later.

Remove the sheet metal screws that hold the controller box panel in place so you can get behind it. The control box is the little black 6x6 black box on the driver’s side with all the wires that’s attached to a piece of black stamped steel. The screws you remove hold the black panel to the door (not the box to the panel)



Remove the rubber plug for the access hole. Now you can get to the innards of the door.



Hopefully the window was all the way up when it broke. If so, the lift mechanism should be out of the way. If so take your shop-vac and carefully work around the bottom edge of the door to remove all the broken glass. It may take a while because there are a couple of places that are hard to reach. Use the flashlight, the shop vac and the trim tool to poke around and vacuum up the glass from inside the door. I drove around a little and all the shards seemed to bounce around then settle in the back edge of the door where I could get at them. A pain, yes. But worth it (no sound like ball bearings rolling around the back of the car later.)

Close the door but do not latch it.

So now you have to remove what remains of the glass from the mounts. Get in the driver’s seat, look in the rear-view mirror and look for the mechanism in the door. Carefully (do NOT engage the auto-up or auto-down feature) move the mechanism until the BOLTS ON THE DRIVER’S SIDE MOUNTS LINE UP WITH THE ACCESS PORT from which you removed the little rubber plug. It might take a little coaxing or a couple of tries.

Once you have the mounts lined up, use a 10mm socket to break loose each of the 4 the mounting bolts and remove them. Be careful! They are held in with loc-tite so it takes a bit of force to get them to move. Best thing I found was to reach in with my other hand and hold the mount to keep it from twisting on the track. You do NOT want to be replacing the window regulator too because you break off one of the mounts or tracks.

You will find the passenger side bolts are easy to access. No problem there. The rightmost driver’s side bolt is accessible through the access port.



The hardest bolt to reach is the one behind the controller box panel. But if you gently move the black metal panel that the control box is attached to out of the way, you should be able to reach it with a shortie socket or box-end wrench.



Once you break all 4 mounting bolts loose, they will come out easily. Carefully remove little stub of window glass from each mount.

Lastly, remove the reason for all this carnage – the electrical connections for the defroster should be hanging from the passenger side mount. They’re simple bayonet connectors. Remove what’s left of the glass from the connectors. Wear your gloves as they may be stubborn and there is glass involved.



Once everything is cleaned up (there’s more glass in the door, vacuum it out), you are ready to install the new glass.

Note: Before proceeding, you might want to put some protective tape on the driver’s side edge of the door opening to protect your paint when the glass is inserted.

C-A-R-E-F-U-L-L-Y N-O-W

Make sure you have on your Safety glasses and gloves.

Close but do not latch the door.

Remove the plastic and the door seal that you installed to keep the weather out. Make sure there is nothing in the door opening other than the outer seal on the lower door frame by the wiper.

Insert the glass into the opening from the outside. PUT THE BOTTOM RIGHT PASSENGER SIDE IN FIRST. Then angle the glass to about 25 degrees down on the passenger side. Slide the glass down into the door. Then carefully slide the driver’s side into the opening. Once you have the Driver’s side in you can straighten the glass and settle the glass into the mounts in the lift mechanism.

It is very helpful to have someone sitting inside to car to be sure you don’t miss the mounts in the lift. What you’ll find is that the glass **just** fits into the opening when you angle it properly and the lift (if adjusted as recommended before) will be in the proper spot to receive the mounts for the new glass once you straighten it out.

Do not drop the glass down into the door. You will break it.

Do not force the glass into the opening. It will fit if you do it right. Otherwise, you will break it.

Reinstall the 4 10mm mounting bolts. Put a drop of lock-tite on the tip of the threads and start them into the mounts for the new glass. I don’t know the torque settings but you DO NOT HAVE TO KILL THEM to get them to properly hold the glass. That’s why you’re using lock-tite. Just reasonably “snug” should work fine.



Replace the 10mm sheet metal screws for the Control box panel. If you removed the panel, be sure to get the triangular rubber grommet at 1 o’clock into the slot properly.

Attach the defroster leads if you want. Note: I think my leads were attached to the glass upside-down. There seemed to be enough slack so I hooked them up anyway. Have to live on the edge sometimes I guess.



Replace the protective plastic. Clean the mounting surface with a little alcohol and you can reuse the original bead of sticky black stuff.

Replace the door card. Hook the card over the top edge of the door and press down. Then pop the pins into their respective holes with a blow with your open hand. Again, you don’t have to kill it, they will pop in with a little force.

Replace the door pull. 10mm bolt/screw. Replace the plastic plug for it.

Replace the seal around the main part of the door. Insert the left and right bottom “tails” first, then work from the top center around the window frame until you get the seal settled into the door.

Check you work.

Test the window by CAREFULLY using the up-down switch on the dash. Again, do not engage the auto-up or auto-down feature until you’re CERTAIN that the window moves freely all the way up and down in the track.

To reset the auto-up and auto-down, lower the window all the way. Then press and hold the up button until the window goes all the way up, stops, then hold for three more seconds. The auto-up/down feature will then be set.

Sorry you had to suffer through all this but hopefully you’ll be able to enjoy your new window for many years to come! Ta-da



P.S. You might want to avoid using the defroster, Har.
 
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Just to add to this. Since I had the spoiler I couldn't just slide the window in like the author did. I had to remove the passenger-side guide rail inside to give me more angle room. By the way, those connectors look just like mine. Awesome write up though:cheers:
 
20150311_140856_resized.jpg~original

[MENTION=91346]emoore924[/MENTION]

Is that new glass Genuine Toyota? Did you add the little extensions of the pads to the glass or is that how it came? I'm curious why it seems then new glass has the contacts close together like the original, but the silvered pad is split; where as on the original it seems to be one piece... Curious...

Great write-up none the less.
 
20150311_140856_resized.jpg~original

[MENTION=91346]emoore924[/MENTION]

Is that new glass Genuine Toyota? Did you add the little extensions of the pads to the glass or is that how it came? I'm curious why it seems then new glass has the contacts close together like the original, but the silvered pad is split; where as on the original it seems to be one piece... Curious...

Great write-up none the less.

I was wondering the same as mine is one piece as the original with no extension.
 
No endorsement here, just facts...

Not Toyota glass. Aftermarket from Benson Glass. "Made by China" :shrug:.

Available from several eBay sellers. Also from RockAuto. $140ish shipped on ebay, $200 + shipping Rockauto.

On the label stuck to the glass:
FB21886 YPY
PN: BG-NA-GPA130502
Serlan No: BT130710096

Unfortunately, Toyota glass was quite a bit more expensive.

Safelite wanted $294 for the whole job and I believe the Benson is the same aftermarket part they use.

I too was curious about the connectors. They weren't the same as factory from what I could see. First, they should have been pointing down, not up. I could have desoldered and reoriented them but I didn't want to stress the glass with the heat from another (second) solder event. And as you mentioned they connected separately to the glass rather than the original which seemed to be connected to the **same** spot on the glass.

No, I have not tried the new defroster. :scared:
 
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Nice write-up!

Maybe the failure mode is part of the conductive trace breaking where the connector is soldered on. Stress on the connector could pull on it, and part of the conductive area could break. If just a little is left, all the current going through a small area of metal will create a lot of heat. Looking at the picture of the new glass, it's unlikely that there could be a short between the two contacts. The old ones are a lot closer together, so maybe it's possible that they get shorted somehow?

Maybe someone with Toyota glass could pull their door apart and take a picture of how it looks?
 
You do NOT want to get any of this in your eyes as that would mean a guaranteed trip to the ER.

Great write up! I do, however disagree with you on this. Sort of. If I have a foreign body (ies) in my eye, if possible, I would head to an ophthalmologist. They are equipped better than an ER to handle terrible eye injuries. :thumb3:

I work in an ophthalmologist office, so, just throwing this out there.

Thanks!
 
Great write up! Sounds like a royal PITA! I just bought the 138.00 ebay glass from lilyglass and it will be installed in a brand new OEM gate next week by my body shop. The body shop will probably not want to remove the old glass in the crumpled up tail gate since they have a new one so I doubt I will be able to take pictures of the connections as I originally thought.
 
The body shop will probably not want to remove the old glass

Doubt you'd need them to do that to get a shot.

I bet they'll be reusing your door card. So they'll have already removed almost everything you need to remove from the old door to see the glass connectors inside the door. All you'd need to do it simply pull off the sheet of protective plastic and shoot a pic right into the opening in the door. Easy-peezie. They might even do it for you before they scrap the old door.
 
I would have just used my glass coverage

Interesting that you should bring that up. I asked. But this kind of breakage, as opposed to a rock hitting a windshield or a tree falling on the car, is considered a "manufacturer's defect" and is not covered by my comprehensive coverage. If something hit it and caused it to shatter, it would be covered. Simple defroster overheating the glass (or other unknown apparently), not covered. Besides, it wouldn't have made my deductible anyway so not even worth the ding on my claims history....
 
Glass coverage provided by your normal auto policy doesn't cover wear and tear items, faulty engineering, or defective items like this. Typically the glass coverage only covers cracks in the windshield because they are evidence of an impact which is covered by the policy itself. Insurance policies only cover certain perils (events). Impacts are usually covered. Breakdown (head gaskets, shocks, bearings, and in this case glass broken due to inherent defect) isn't covered. Those things fall into the general category of 'stuff happens.'

You might be able to get it covered under the comprehensive coverage if you claimed that it was due to vandalism but that would be insurance fraud which is a felony in most states and even then would be subject to your policy deductible.

By the way, I'm and insurance underwriter. I'm not making this stuff up.
 
Just thought you might want to know that Toyota sent me a letter about my 4Runner saying that they have extended the warranty coverage for the rear window breaking during defroster use. With the burn mark on your defroster connector you have pretty good proof thats what happened. You might want to contact a dealer and ask them to be reimbursed for the cost of replacing your rear window. It said in the letter that the warranty coverage has been extended to April 30, 2018.
 
I know there's a recall on the rear window. Does that mean they will replace an intact window or only if there's an obvious problem or it's shattered?
 
attach window to rails

I have a similar issue -- the glass is OK, but my problem is the glass became separated from the rails that look to be glued onto the window (and then fit into a channel on each side of the regulator). Any ideas on what to buy to fix that? The rails themselves seem OK, but I either need to get new ones (what part to buy?) or figure out how to glue them back on like they were before. Any ideas? Thanks.
 
I know this is an old thread, but I just wanted to say thank you for the write up...my window shattered and I bought a replacement on eBay. The write up you posted was everything I needed to do it myself.
You sir, are appreciated!
-D.C.
 
I know this is an old thread, but I just wanted to say thank you for the write up...my window shattered and I bought a replacement on eBay. The write up you posted was everything I needed to do it myself.
You sir, are appreciated!
-D.C.

For those of you that replaced your rear window, can you shoot me over a part number? Mine just exploded...
 
For those of you that replaced your rear window, can you shoot me over a part number? Mine just exploded...

Just call a local automotive window shop. I did and installed it myself. Paid $180. Check if Toyota is still offering reimbursement if installed by a shop. I installed it myself before Toyota offer the reimbursement scheme which disqualified anyone that installed it themselves. Make sure you check and replace the window exterior weather strip if needed at the same time.
 

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