The rear window shattered spontaneously while the rear defroster was on. There was no impact to the window and no prior chips/scratches. The tint held the shattered window together, but without the tint glass would have gone flying inside and outside the vehicle, putting passengers and cars traveling behind at risk. No warnings or issues were present for the rear window or defroster system prior to incident. The problem has been inspected by Toyota of Orlando. This problem is known to Toyota under their enhanced warranty program ZG7, but they refuse to cover the repair because the date to experience the shattering rear window has passed. There are numerous other cases reported of this issue. Toyota of Orlando confirmed this would fall under their ZG7 program, had the window shattered and brought to a dealer prior to 4/30/2018.

- Orlando, FL, USA

The rear window shattered and is not available for inspection because it's in a million pieces. There is now broken glass all inside the vehicle and on the ground. The car was inspected at the dealership, but not insurance. There was no warning leading up to the incident. The defroster for the rear window was on due to weather. The loud bang and sound of glass falling is how I was aware of the failure.

- Colonial Heights, VA, USA

Rear window breakage: A few minutes after turning on the rear window defogger while parked, a smell of hot electronics was noticed. Thinking the smell was coming from the vent/engine compartment, I turned the vehicle off and inspected under the engine hood for the source. No damage or smell was detected. I turned the vehicle back on with the defroster on, and shortly after, the entire rear window shattered. No foreign objects indicating impact damage were found in the glass wreckage.

- Cocoa, FL, USA

2006 4runner rear glass exploded/shattered after using defrost - was denied reimbursement despite this being a known issue and faulty defrost connector. After dropping my 5 year old son off for school on 1/15/2021, I pulled up to a stop sign and heard a loud crash from the back of the car. I looked in the rear view mirror and the back glass had completely shattered and pieces were coming off into the back seat. Nothing had hit the window from the inside or outside - this happened spontaneously. Right before this happened, I had the rear defrost on for approximately 10 minutes to clear the rear glass while driving. The defrost was off when the glass exploded. I contacted my local Toyota dealership who informed me that this was a known issue but that the extended warranty coverage for this had ended on April 30, 2018.Toyota released a tsb (technical service bulletin) and offered an extended warranty and free replacement for vehicle owners who experienced this problem starting in 2017 but is since expired. The connector for the defrost located in the rear glass is found to be faulty and can short out or overheat, causing the glass to shatter. Being that this is a major safety concern and thankfully my 5 year old son wasn't in the backseat at the time, avoiding injury from the glass, I decided to contact Toyota customer experience. A case was opened, however, they wouldn't offer any compensation or assistance with getting the glass replaced. We are without a vehicle until this can be repaired and I am now forced to pay for it on my own since Toyota isn't agreeing to help at all.

- Fort Mill, SC, USA

On my way to the grocery store, my back window blew out while driving. It was a very loud pop! which scared the daylights out of me! I looked in the review-mirror and the back window completely shattered. There was nobody around and I was driving too slow for it to have been a rock or debris. I was driving in san antonio Texas near utsa blvd. In the turning lane, was in motion at a slow speed as I was pulling up to a red light. The mechanic at safelight auto said that it had to do with the electrical and saved the piece of where there was a short causing the blast. As I walked out the door, a gentleman asked if that was my Toyota as he was there for the exact same issue for the same year make and model Toyota.

- San Antonio, TX, USA

Turned the rear defroster on and smelled something burning. Turned off the defroster and then couple minutes later, rear window exploded and totally broke. Did this leaving my neighborhood so only going about 20 mph. It was about 53 degrees and rainy.

- Woodstock, GA, USA

When using the rear defroster in the cold, the rear hatch window shattered. Common issue and Toyota does know about it but only offered 1 year enhanced warranty. Warranty is now expired and Toyota will not cover this safety hazard as my car is equipped with 3rd row seating.

- Houston, TX, USA

Rear window spontaneously shattered with loud pop in an alarming fashion while driving down freeway with defogger on. Appears to be issue covered in Toyota T-sb-0189-17.

- Richmond, TX, USA

Rear window explodes and shatters sending glass pieces and razor sharp tiny glass shards throughout the back compartment with some pieces making it to the back seat. Suspected cause is related to use of the rear window defogger. Occurred while driving 75 mph on a highway in rainy weather. Outside temperature around 40F inside temperature around 70F. Letter to Toyota along with repair invoices are attached to this complaint.

- Fort Worth, TX, USA

I turned on the rear defrost in my driveway. After about 1 minute, I started to smell a slight burning smell. As soon as I smelled it, the rear glass shattered while the vehicle was in motion. I was turning onto highway 70 from bridgeway drive in cookeville, tn. The window shattered completely on highway 70 in front of mike's market at about 7:20 am on my way to work. Toyota provided extended warranty coverage for this exact issue but only through April 2018. I called Toyota to let them know but they do not extend coverage even one day past the warranty coverage period even though there is a defect according to Toyota. The program is warranty enhancement program ZG7

- Cookeville, TN, USA

This complaint is in regards to a 2006 Toyota 4runner vehicle id # mileage is 150.000.the Toyota was purchased this year from royal palm Toyota of Florida address: 9205 southern blvd, royal palm beach, fl 33411. The vehicle was in excellent shape. The problem is that on 11/23/2016 the vehicle was parked in are drive with the engine was just turned off for about 5 mins at that time my daughter was still in the in the SUV when the rear window shattered completely.for no apparent reason.we reported to are insurance company was advise of a repair company please see file.and I have reported to Toyota office in Texas report number# thank you product_or_service: 08/01/2016 order_number: [xxx] account_number: [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Royal Palm Beach, FL, USA