2025 Toyota Grand Highlander Body & Structure Problems

Your sunroof suddenly exploded and pushed upward while driving at 55 mph with the cruise control on, even though no other vehicles were nearby and all windows were closed. This happened with less than 9,000 miles on your new vehicle. Your dealer took 8 days to inspect it, then Toyota denied warranty coverage and quoted you over $2,100 for replacement. The dealer indicated the vehicle may not be safe to drive in its current condition. Fixing this will require a complete sunroof assembly replacement and inspection of the frame and sealing system.

Water is leaking from the top of your windshield and dripping onto the steering wheel and dashboard, especially during rain or after a car wash. This started early in your vehicle's ownership and has been seen multiple times, creating a distraction while driving and risking damage to electrical components under the dashboard. The dealer inspected your vehicle twice but couldn't identify the source, and any repair attempts haven't stopped the leak. The fix will likely involve inspecting and resealing the windshield trim, roof panel, or weatherstripping where water is entering.

Your hood vibrates or flutters while driving, which is distracting and takes your attention off the road. Toyota issued a technical service bulletin (T-SB-0111-24) for the 2024 Grand Highlander to address this exact problem, but your dealership says it doesn't apply to the 2025 model—even though the hood part number is identical between the two years. The constant vibration could potentially damage the hood over time. Fixing this will likely involve inspecting the hood attachment points and may require adjustment or replacement of hood components.

Your Grand Highlander's hood shakes and vibrates excessively, especially at highway speeds, with the movement occurring at the rear section directly below your windshield. This vibration is noticeable enough to be distracting while driving. Toyota dealers have been unable to identify or fix the underlying cause so far.