2018 Volvo XC90

NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.

This submission supplements NHTSA Complaint #11759206, filed on August 24, 2026, regarding a 2018 Volvo XC90, in order to provide additional relevant information that came to light after the original filing. At the time of the first safety-critical malfunction (in-vehicle warnings including "Transmission Acceleration Performance Reduced" "Gear Lever Locked" and related electrical system symptoms), the service manager at Volvo Cars Brooklyn was able to remotely diagnose the likely cause by telephone, before the vehicle was even towed to the shop, specifically instructing the owner to check for dampness under the driver's floor mat, which was confirmed to be present. This indicates the symptom pattern described (sunroof leak leading to corrosion affecting the transmission, brakes, and electrical system) was already recognized and familiar to Volvo Cars Brooklyn's service staff, not a novel or difficult-to-diagnose issue. Additionally, the owner was informed that multiple other Volvo vehicles were present at Volvo Cars Brooklyn on the same day for repair of the same reported issue. Once arriving at the dealership, the service manager tole us that he had, "Just totaled a vehicle for the same issue." This suggests the underlying defect is not an isolated occurrence, but a broader, recurring pattern affecting multiple vehicles of this platform. This supplemental information is provided to support NHTSA's assessment of whether a safety-related defect trend exists affecting this vehicle platform, consistent with the pattern described in the original complaint and in other publicly available consumer complaints regarding sunroof-related water intrusion on the Volvo XC90.

NHTSA ID

11759327

Incident

Aug 11, 2026

The vehicle first experienced a safety-critical malfunction while driving on the highway on August 11, 2026, producing in-vehicle warnings reading "Transmission Acceleration Performance Reduced" and "Gear Lever Locked," along with broader electrical system symptoms, requiring the 2018 Volvo XC90 to be towed to Volvo Cars Brooklyn on August 11, 2026. At that time, dampness was discovered under the driver’s floor mat, leading to the discovery of a sunroof leak and resulting water intrusion. The dealership represented the vehicle as fully repaired and safe to drive. The same safety-critical malfunction occurred later that night, while driving about 90 miles away from the dealership, with the same warnings appearing, confirming that the original repair failed to address the underlying issue. Loss of normal transmission and braking function while the vehicle was in motion directly affected the driver's ability to control the vehicle. The vehicle was towed for a second time on the morning of August 12, 2026, to Volvo Cars Brooklyn, where it was confirmed that module corrosion caused by the original sunroof leak had not been properly diagnosed or corrected during the first service visit, and that this corrosion had disrupted signals to the vehicle’s electrical, braking, and transmission systems. The dealership completed a corrective repair on August 12, 2026, replacing the OFM module and removing water, following the second incident. The vehicle has not been separately inspected by Volvo’s manufacturer-level engineering team. This failure is consistent with a broader, documented pattern affecting this vehicle platform. Volvo has previously issued a Technical Service Bulletin addressing a sunroof-related water leak on an earlier model year of this platform. While that bulletin does not specifically cover the 2018 model year, numerous 2018 model year owners have independently reported the same failure pattern, a failed sunroof seal, often linked to clogged sunroof drains.

NHTSA ID

11759206

Incident

Aug 11, 2026

At first I was having issues with stop and start, replaced the battery then was told I wasted coffee in my center Console and it cause electrical issues and was told the repairs would be 3,400 in which collision issuance paid for. After the repairs my driver side seat belt would latch then the passenger side wouldn’t latch either so I currently don’t have working A/C or working seatbelts which is known problem for these vehicles.

NHTSA ID

11757883

Incident

Aug 6, 2026

The air conditioning evaporator core has been widely known to freeze and crack on 2016-2021 models of the xc90 which sends toxic refrigerant smell thru the vents. This is a big safety hazard and should be recalled. Volvo knows about this but only does a goodwill repair to loyal customers who purchased the vehicle new and have all service records from the dealership. This is a $4000 repair for everyone else for a manufacturer defect and safety issue

NHTSA ID

11749955

Incident

Jul 1, 2026

VIN: [XXX] •Make/Model/Year: 2018 Volvo XC90 •Mileage at time of each incident (58,385 / 58,480 / 68,261) •Approximate dates of each incident Vehicle has experienced recurring brake system failures. First, a seized rear brake caliper (Sept 2025) requiring caliper/rotor/pad replacement. Four days later, brake pedal became stiff and hard to depress; brake booster diagnosed as internally failed and replaced. Approximately 9 months and 9,800 miles later, vehicle experienced complete loss of braking ability while driving — brake pedal would not stop the vehicle, driver had to use the parking brake to stop, vehicle was towed to dealer. All repairs performed at authorized Volvo dealer. This is a repeat failure of the same brake system after a documented repair. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11748675

Incident

Jun 16, 2026

I am reporting a serious safety concern involving a 2018 Volvo XC90 T8 PHEV. On [XXX], at approximately [XXX] CT, the vehicle experienced a sudden multi-system safety and actual brake failure while in a parking-lot/low-speed setting near [XXX} in Austin, Texas. The vehicle displayed multiple urgent warning messages and indicators, including power steering failure / stop safely, brake/ABS warning, SRS airbag service urgent warning, stability/traction warning, battery/electrical warning, check-engine warning, and tire-pressure warning. The vehicle ended in an irregular/distressed parking position after trying to locate a concrete block to force stop the car due to ABSOLUTE BRAKE FAILURE, E BRAKE SEEMED TO NOT WORK EITHER. The concern is not simply that a warning light appeared. The event involved steering, braking, airbag/SRS, stability, and electrical warnings at the same time, making the vehicle unsafe to operate AND SOMEHOW THE BRAKES WEREN’T OPERATING DUE TO THE LACK OF FUNCITONING. Photos were taken of the warning messages and vehicle position. Prior related history:
This vehicle has prior safety-system history involving SRS Airbag Service Urgent warnings and braking/vehicle malfunction and movement concerns. Earlier review and discussion involved Volvo engineering, VDDM replacement, CAN/network concerns, calibration requirements, voltage/12V battery considerations, software/module updates, and post-repair validation. The VDDM is understood to participate in vehicle dynamics, stability control, brake coordination, and PHEV regenerative/hydraulic brake interaction. Prior documentation also raised concern that intermittent brake, SRS, VDDM, CAN, and calibration issues may not reproduce during a short dealer test drive. Safety risk:
The safety risk is that the vehicle may experience sudden or intermittent loss, degradation, or warning of systems involved in steering, braking, stability control, and airbag readiness. A simultaneous power steeri INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA

NHTSA ID

11746058

Incident

Jun 20, 2026

My 2018 Volvo XC90 T8 Plug-In Hybrid experienced a catastrophic, premature component failure of the Electric Rear Axle Drive (ERAD) propulsion system while driving. The ERAD unit suffered a total failure of internal bearings and sensors, completely disabling the electric rear wheel propulsion system and suddenly forcing the vehicle into a reduced-power "limp mode" on the road. This sudden loss of hybrid propulsion creates an immediate highway safety hazard, removing expected acceleration and vehicle control in traffic. Volvo has documented this exact engineering flaw internally under Technical Journal TJ 36665, recognizing a manufacturing vulnerability in these specific hybrid components. However, the manufacturer is refusing to provide remedy or financial cost-sharing to repair this vital propulsion and safety defect, leaving a hazardous, compromised vehicle on the road.

NHTSA ID

11744495

Incident

May 15, 2026

At approximately 6:30 PM, after normal driving and parking at a local park, our family was unloading children from the vehicle. One child was standing next to the vehicle while we removed a younger child from the rear seat. The child suddenly screamed and stated that he had burned himself. We later determined that he had accidentally come into contact with the exterior exhaust outlet. As we continued walking, we noticed the injury was more severe than initially believed. We took photographs of the burn and later sought medical evaluation. The physician determined that the injury was a second-degree burn due to blistering and provided treatment recommendations. The vehicle was operating normally, and there were no warning lights, messages, or signs of a malfunction before the incident. The concern is that the exposed exhaust outlet becomes hot enough during normal vehicle operation to cause a serious burn from brief accidental contact. We believe the location and accessibility of the exhaust outlet may present a burn hazard, especially to children during routine loading and unloading activities around the vehicle. The vehicle and photographs are available for inspection. The vehicle has not yet been inspected by the manufacturer or a dealer regarding this incident.

NHTSA ID

11744366

Incident

Jun 15, 2026

This is a Technical Journal: Text plus 1 .jpg attachment - If remote control key is not detected by the car and shows message in DIM "Car key not found" or if functions such as lock/unlock are not working, please follow advice for detecting key

This is a Technical Journal: Intermittent knocking noise during acceleration. If the sound corresponds to attached sound file, change front drive shafts to the below part numbers.

This is a Technical Journal: Headlamp condensation inside lens - information/leak test. If the result is not ok (air leak), it is ok to replace the headlamp

This is a Technical Journal: Panoramic sunroof, sealing strip has a gap

This is a Technical Journal: Text plus 2 PDFs and 1 .PNG Oil Consumption test. Perform the test. Follow service procedure
 Description and Service sections updated to clarify that vehicle reports are not required.

This is a TJ text only - The purpose of this TJ is to be a master reference list to easily identify any components that are on prior approval. This TJ will be regularily updated as items are added or removed from prior approval.
 Current items under prior approval are listed in the "Service" section