2025 Toyota Grand Highlander Other Problems

While driving at approximately 50 MPH with no other vehicles around, there was a loud bang and then the sound of air. We identified that the panoramic sunroof had exploded. We pulled over immediately and took photos of the sunroof which at that time was shattered but intact.

Your panoramic roof glass suddenly shattered while you were driving on the freeway, even though there were no overhead hazards, trees, or other vehicles nearby. Glass pieces fell into the back seats where your children were sitting, though no one was injured. The roof glass may need to be replaced, and the cause of the spontaneous failure should be investigated.

Your vehicle's front grille design leaves the air conditioning condenser exposed to road debris like rocks, which can puncture it and cause refrigerant loss. You've experienced this damage yourself, but Toyota won't cover it under warranty, claiming it's an external occurrence—even though the 2026 model added extra protection in this area, suggesting Toyota knew about the vulnerability. The repair cost is your responsibility, but you believe the design flaw makes this a manufacturing issue rather than bad luck.

While driving, you heard a loud noise like a gunshot and discovered your sunroof glass had shattered across the back panel. The glass appeared to have blown out from internal pressure rather than being hit by something external, then cracked across the rest of the panel. The sunroof will need to be replaced or repaired to restore the glass panel.

Your sunroof suddenly exploded and shattered into pieces, leaving an 8-inch hole in the roof. The sunroof panel is bowed upward as if it was under extreme internal pressure, even though the weather was mild (70°F with clouds and light rain). Glass debris scattered across the interior, though the sunshade being closed contained most of it.

Your air conditioning system stopped working while driving normally, and a Toyota dealership found that the AC condenser had a hole causing a refrigerant leak. Toyota refused to cover the repair under warranty, calling it a "road hazard," even though the dealership acknowledged this is a common problem on the Grand Highlander with no collision or unusual road event involved. The condenser appears to be positioned in a vulnerable spot where small road debris can easily puncture it, and this issue is reportedly happening to multiple owners. Fixing this typically requires replacing the AC condenser and recharging the refrigerant system, which costs $1,500–$2,000.

Your hybrid radiator developed a coolant leak from a puncture, causing your car to suddenly lose acceleration on the highway with hybrid and engine malfunction warning lights. You had to pull over safely but were stranded for over an hour waiting for a tow truck. You're concerned that the front grille design allows debris to reach the radiator without adequate protection.

Your sunroof spontaneously shattered while you were driving slowly in a parking lot at just 2 months old, with glass falling into the cabin. When you took it to the dealership, they refused to cover it under warranty, and Toyota Care also denied your claim. The sunroof was repaired by an independent glass shop without a third-party inspection.

Your air conditioning system has stopped working because the AC condenser has a hole, which the dealership says was caused by road debris. You haven't taken the vehicle off-road, and you've found that other owners are experiencing the same issue and installing protective netting to prevent it from happening again. The repair costs $1,800 even though you've owned the car for less than a year, suggesting this may be a design issue rather than owner misuse.

Apparently, a rock flew into the front grill striking the radiator (which is located directly behind the grill) and put a hole in it. This caused fluid to leak and fortunately during a routine maintenance check (my first service) on 8/15/25, it was discovered. The car was deemed not safe to drive until repairs were made.

Your Grand Highlander's outside temperature display reads 2 to 7 degrees higher than the actual temperature, which can be misleading when it's near freezing and you need to know if roads might be icy. This inaccuracy makes it difficult to judge driving conditions in cold weather. The fix will likely involve recalibrating or replacing the external temperature sensor.

Your front windshield developed a crack while parked, with no impact or accident involved. The crack has been expanding, making the windshield unsafe. You'll need to have the windshield replaced to restore visibility and structural integrity.