Toyota Tundra water leak problems

Filed Jul 2, 2026 · TX

Bought my vehicle brand new on January 2026. During heavy rain, my truck has a strong water leak that comes out of the handle bars between the windshield and front door windows, behind the rearview mirrors and the sun glasses compartment. I’ve brought my vehicle to the dealership 3 times already and couldn’t fix the issue or duplicate the water leak. After the third visit at the dealership, i couldn’t find out if the leak was fixed since it has not rained since then. So i went ahead and washed my vehicle and sprayed the top and front of my vehicle. As i went in my truck, i saw water leaking again.

Filed Nov 19, 2025 · Airbags, Electrical · CA

What component failed and is it available for inspection? The front driver-side roof seam on my 2022 Toyota Tundra developed corrosion under the paint and eventually opened enough for rainwater to enter the cabin. Water drips directly into the A-pillar area onto the side curtain airbag wiring, squib connector, and padded harness. It also reaches the dashboard and electrical buttons near the steering wheel during rain. The roof seam, A-pillar wiring, interior rust staining, and all affected components remain available for inspection. How was safety put at risk? The A-pillar contains the SRS curtain airbag system, its wiring, and connectors that should never be exposed to moisture. Continuous water intrusion over many months can cause corrosion, increased resistance, short circuits, or damage to the airbag inflator/squib circuit, which may lead to unintended deployment or failure to deploy in a crash. Water reaching the dashboard controls and electrical switches could cause intermittent electrical faults or malfunction of driver controls. These issues present a significant safety risk because the vehicle’s airbag and electrical systems may not function as designed. Has the problem been reproduced or confirmed? Yes. The Toyota dealer has repeatedly observed the active leak, interior rust streaks, and bubbling/corrosion along the roof seam. The water intrusion occurs every time it rains. Has the vehicle been inspected? Yes. Toyota has inspected the truck multiple times, including by a Field Technical Specialist. However, Toyota has been unable to provide complete documentation or photos from the FTS inspection, and the underlying safety issue remains unresolved. No inspections have been done by police or insurance. Warning lamps or messages? No warning lamps appeared. The first symptom was water leaking into the cabin around March 2024, followed by rust streaking inside the A-pillar and exterior bubbling. The issue continues during rainfall.

Filed Sep 29, 2025 · Lights · 30,000 miles · KS

The contact owns a 2023 Toyota Tundra. The contact received notification of the federal safety agency Campaign Number: 25V322000 (EXTERIOR LIGHTING). The contact became aware that water was entering into the vehicle through the taillight assembly. Whenever water entered the vehicle, the taillights and turn signals failed to function as intended. No warning lights were illuminated. The turn signal were blinking quickly during the failure. The vehicle was not diagnosed or repaired. The contact replaced the taillight independently. The contact stated that the failure persisted. The manufacturer was not made aware of the failure. The failure mileage was approximately 30,000.

Filed May 24, 2020 · Body · 20,000 miles · RI

Bed bolts began rusting soon after I purchased the truck. I complained to the dealer but they said it was nothing. Waited a year and it got worse, rusting the bed, so I brought it to dealer #2 who said there was nothing they could do - no recall or tsbs. My frame was replaced 2 years ago at original dealer and I asked about the bed again but was told no warranty, recall or tsb. I just learned that there is a tsb on the bolts and corrosion of the bed. Other than a rusted out bed, my truck looks and runs great but I'm afraid that my bed it going to fall off every time I hit a bump. I feel like I was misled - lied to - by both dealerships. Toyota should have corrected this issue 10 years ago. I am not in the position to have repairs done or purchase a new truck. Toyota should be looked into for not making the corrections as soon as the issue was discovered. The design is flawed as the bed is double walled with some sort of insulation between the layers. As it rusts from underneath, water enters between the walls and the insulation holds the moisture. By the time the rust begins to show on top the bottom is so far gone. I really do not want to scrap a vehicle because of toyota's neglect.

Filed Aug 8, 2015 · Body, Electrical · 98,000 miles · VA

Anytime it rains water leaks in behind the dashboard on the passenger side, leaking water through the electrical wiring and into the floorboard of the truck there are lots of wires and a blower motor in this area where fire could cause any number of unsafe conditions. The cause has been narrowed down to one or both of two things. The first is a crack that originates in the seam behind the dash board of these vehicles due to production error. The second is rotting grommet plugs under the windshield wiper cowl. The first being much more severe as it could also cause structural integrity.

Filed Jul 28, 2015 · Body · 5 miles · PA

Tl* the contact owns a 2002 toyota tundra. While driving at any speed during inclement weather, water leaked from above and behind the glove box. The vehicle was taken to the dealer. The technician diagnosed that the water leaked from a body seam under the dashboard, which was cracked. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 5.

Filed Nov 3, 2014 · Body · 40,000 miles · TX · crash

Tl* the contact owns a 2012 toyota tundra. The contact was involved in a crash and the vehicle veered off the road into the water. The specifics of the crash were not available. The vehicle alarmed activated and the doors failed to open. The contact stated that water entered the vehicle and, when the alarm deactivated, he was able to open the doors and exit. A police report was not filed and there were no injuries reported. The vehicle was towed to the contact's residence. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 40,000. The VIN was not available.

Filed May 25, 2011 · Engine · 62,000 miles · AR

Truck went into "limp" mode and the vsc, check engine light and the "traction" light all came on. Took it to autozone to get a read out and it had a p2442 for a subaru, but was figured to be the asv (air switch valve) or the aip (air induction pump) on bank 2. Considering that my truck is out of warranty with 62000 miles and all the forum and websites that I have been to that told me it would cast any where from 1000 to 5000 bucks to fix, I checked it out myself. The asv on the driver side has a metal plate that is broken and is keeping the valve opened. I have called a dealer and they told me they have no clue when the parts could be in because of the tsunami in japan. I am very upset as to this issue as I am not able to bypass the it and get my truck running correctly. Toyota needs to step up and make a recall on these pumps and valves. I was told that one of the reasons for the issues is that water gets in the pimps. I cannot see how water is getting in these pumps and valves as they are enclosed. This is a design flaw and needs to be rectified.

Filed Sep 27, 2010 · Acceleration · 27,484 miles · MN

Tl* the contact owns a 2004 toyota tundra. The contact stated that when driving at highway speeds, the check engine warning light would intermittently illuminate. She would attempt to accelerate yet the vehicle would not respond before stalling. The vehicle was taken to the dealer who advised that the throttle would need to be replaced. The throttle was replaced. The failure recurred and the throttle was replaced a second time at a local repair facility by a certified mechanic but to no avail. The throttle was replaced a third time yet it did not correct the failure. The vehicle was then taken to an authorized dealer who advised that the throttle was defective. The contact advised that the throttle was replaced three times to no avail. The dealer then advised that there was water leaking into the connector through the windshield glass. The vehicle was not repaired. The contact was concerned with the safety of the vehicle stalling and the possibility of a crash. The failure mileage was 27,484 and the current mileage was 42,556.

Filed Dec 12, 2005 · Electrical · 48,000 miles · IL

Dt: contact states water enters the water tight joints in the wiring harness. This causes the pins to corrode and shorts out the rear tail light. The vehicle has been to dealership, but the vehicle is no longer under warranty and there have been no repairs made. *ak updated 1/11/2006.