Ram 1500 water leak problems

Filed Nov 8, 2026 · Body · FL

Water enters the cab at both upper rear corners at the rear window frame with every rain, and the rear defroster has failed (likely due to corrosion from the water leak). My concern is where the water terminates. The rear cab wall behind the second-row seat carries the RF hub and the 48V eTorque battery pack. Water intrusion along this path is the leading documented cause of RF hub failure on these trucks, producing key-not-detected faults, TPMS faults, and no-start conditions. That module is VIN-locked, so there is no inexpensive remedy once it corrodes. There were no warning signs other than the rear defroster stopping, and further inspection uncovered a water leak. The dealer confirmed the leak but denied it under the extended warranty.

Filed Oct 19, 2026 · Electrical, Visibility · PA

Original incident occurred in March 2026. While traveling at highway speeds my 2021 Ram 1500 lost all power and engine shutoff. I was able to get the truck to the side of the interstate due to it's momentum. Once I come to a stop, the e-brake is automatically applied and the vehicle will not restart or respond to any inputs from the keyfob. Vehicle is towed to nearest dealer, am told that the issue is related to an open recall that they have fixed and is now operating as normal. Less than one week later, the exact same thing occurs again, once again while traveling at highway speeds. Is towed into another dealer for service, and it is identified that the RF Module/Hub will need replaced due to a water leak. Repair is completed and vehicle returns to normal operation. 10/16/26 I attempt to start the vehicle with no success. After evaluating for a dead battery the vehicle is once again towed to a dealer (the same one that serviced it the first time). It is again identified that the RF Module/Hub will need replaced again due to a water leak around the back glass. I point out the Warranty Bulletin D-23-17 that would cover my vehicle and pertains to back glass water leaks. Am told by the dealer and Ram customer care that it does not in fact apply to my vehicle based on manufacturing date, despite it directly conflicting with the dates reflected on the notice. The TSB and the Warranty Bulletin appear to have conflicting dates for manufacture on them. This is incredibly deceptive behavior by Ram and should be looked into further. I have identified at least 8 previous complaints submitted to the federal safety agency pertaining to the water leak/RF Module issue within the last 18 months along with acknowledgement from multiple service advisors at the dealerships that it is a known issue, yet no recall has been issued for it. Due to the potential and documented history of this leading to sudden power loss, it is merely a matter of time before this results in severe injury or loss of life.

Filed Oct 12, 2026 · Electrical, Engine · AZ

The manufacturer defect involving stress cracks in the rear window structure (TSB 23-042-24) caused water to flood the rear cab wall along with the leaking rear cab air pressure vents. This water has short-circuited the CAN-bus network/RF Hub, causing active dashboard failures including 'Service Shifter' and 'ParkSense Temporarily Unavailable.' The vehicle is at immediate risk of locking in Park, stalling, or failing to shift while driving, creating an immediate crash hazard. Additionally, the exhaust manifolds are leaking, risking exhaust gas intrusion into the cabin. The dealership, Earnhardt Chrysler Dodge Jeep Ram at 1521 E Drivers Way, Gilbert, AZ 85297, has failed to resolve the water leaks over 4 separate visits this month." I was told a software update fixed the issue. Then at the last visit something electrical was replaced, the issue is still happening. The leaking rear cab air pressure vents have not been addressed in the previous 2 service appointments. This also allows water to leak onto the RF Hub

Filed Aug 23, 2026 · Driver assistance, Electrical · WV

My 2019 Ram 1500 Rebel has recurring electrical/communication failures that occur every day. The truck repeatedly displays “ParkSense Temporarily Unavailable,” “Service Shifter,” “Service Tire Pressure System,” and “Tire Pressure Unavailable.” The ParkSense sensors often do not activate at all, leaving me without parking assistance while backing up. The system also repeatedly pings with warnings throughout the day. When “Service Shifter” appears, the truck shifts roughly and the transmission does not feel like it is shifting correctly. I am concerned this could indicate an electrical or communication problem affecting the electronic shifter, transmission operation, gear selection, or vehicle control. The truck also has an ongoing water leak around the rear window, including the upper portion and near the sliding window. The electrical problems appear worse during high humidity, although they have also occurred during winter. I am concerned that water intrusion could cause corrosion, electrical shorts, module damage, or other safety hazards. A reputable independent repair shop inspected the vehicle and identified a U-code communication fault. The problems continue to occur daily. I am concerned about the risk of a collision from losing ParkSense, potential transmission/gear-selection problems, and water-related electrical damage. I am requesting that the federal safety agency investigate whether these recurring failures represent a safety defect affecting 2019 Ram 1500 vehicles. The vehicle is available for inspection.

Filed Aug 6, 2026 · Body, Electrical · TX

Rear window frame cracked at both corners- water leaks inside of vehicle during rain. This can affect electrical components that are at the rear cab inside the truck. I noticed this a month ago but dont know how long it has been there.

Filed Aug 5, 2026 · Electrical, Transmission · GA

MGU Failed, 48v code P0DAF had early signs of premature failure. when on the highway, vehicle shut off completely, no power what so ever. Couldn't steer correctly and vehicle was going highway speeds (approximately 70mph) dealer has confirmed the issue being there MGU gone bad, but I have records of water intrusion multiple times on the rear seats, headliner & back glass (XL1) and water intrusion can cause BPCM to go bad along with the MGU to go bad. they first appeared on or around December 2025, most likely way before that but just never noticed it. check engine light came on and showed a code for the BPCM going bad and then I had the CHMSL replaced 3 times under warranty & then the 4th visit they did they urethane warranty superseded the XL1 and even after that fix, there water leak still occurred and dealership wouldn't fix it they stated Stellantis denied the back glass replacement and further repairs because im out of warranty but the warranty expires 8 Years/150,000 miles and my vehicle is only 6 years old and sitting at 118,350 miles. but the entire problem with water intrusion most likely started anywhere from 60-70,000 miles ago. even when I purchased the vehicle at 39,801 miles I noticed the water stains on the headliner but was advised the CHMSL caused that so it was fixed so technically the CHMSL was replaced roughly 4 times along with the original making it a total of 5 CHSML. so my issue is that its highly possible that the water intrusion that was never fixed for thousands of miles and many months leaked into the rear seats near the 48V Battery pack and eventually started shorting and lead to the MGU going bad. so this all could've been avoided if dealership fixed the water leak many many visits ago. along with the MGU could've been replaced under the major emissions comp warranty way. before that ever expired when it showed signs of premature wear like DTC codes popping up at 100,000 miles and even many more visits prior to December.

Filed Jul 24, 2026 · Visibility · 115,000 miles · TX

The contact owns a 2020 Ram 1500. The contact stated that there was water leaking from the rear window of the vehicle. The contact referenced Technical Service Bulletin: 23-098-23, detailing a crack in the rear window near the third brake light that could allow water to enter the vehicle on the left and right sides. The contact confirmed that the vehicle had experienced leaks on both sides. The vehicle was taken to a dealer to be repaired under the TSB; however, the dealer declined to repair the vehicle. The contact stated that the vehicle met the mileage requirements, but the dealer stated that the vehicle was not included in the TSB. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 115,000.

Filed Jun 8, 2026 · Brakes, Electrical · FL

Car accident. Repaired tires due to abs. Also backlite repair. Leaking water.

Filed Jun 1, 2026 · Electrical, Visibility · NC

SEVERE SAFETY HAZARD: CASCADING ELECTRICAL FIRE RISK. My 2019 Ram 1500 suffered a catastrophic electrical failure while driving. The alternator's voltage regulator melted, overcharging the system and causing the battery to boil and vent toxic sulfuric acid fumes into the cabin, creating an immediate respiratory and fire hazard. This is the direct result of Manufacturer Defect XL1/XG1 (Rear Window Leak). I have physical dealer records proving Westgate Ram held this vehicle for 19 days in Aug 2022 to fix Water Leak Code 09H2OLEAK. They returned the vehicle claiming it was fixed, but I have geolocated photos showing the window leaking heavily just 17 days later. Because the leak was never resolved, water continuously entered the rear cabin, corroding the RF Hub and creating a parasitic drag that destroyed the electrical grid. CRITICAL NEGLIGENCE: On June 1, 2026, Stellantis Corporate (Case XXX) acknowledged the severity of the fire risk by immediately inquiring if Emergency Services had been contacted, yet subsequently refused to offer a safety tow. When I attempted to escalate, their agents [XXX] , [XXX] , [XXX] , [XXX] ) refused to provide IDs. Furthermore, my phone number is now being rejected by their system; calls to their support line immediately fail or disconnect, leaving a fire-risk vehicle stranded at my residence with no recourse. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 30, 2026 · Acceleration, Electrical · NJ

RF Module lost connection to CAN Bus and caused the vehicle to shutoff while driving. Symptoms include messages about key fob not within range and TPMS not able to communicate with sensors. RF Module was replaced however the issue returned. Other symptoms include parasitic draw caused by RF Module that in turn causes the system to report low voltage while driving. Vehicle has left me stranded on more than one occasion due to RF Module failures. These situations where preceded by no starts and shifter errors. Most of these issues can temporarily be resolved by disconnecting the main battery for extended periods. Dealer or service center has not reproduced the issue. Dealership inspected the RF module during installion of a new RF module after a water leak. The issue first appeared after the dealership repaired the "backlite" window, which was leaking on to the RF module. I suspect this might be related to system updates installed during the window installation service call. All of this started in early 2024.