Land Rover Range Rover loss of power problems

Filed Nov 8, 2026 · Electrical, Engine · FL

A warning on the left side about a battery failure as we traveled on XXX west outside of [XXX]. My husband said for me to get back to [XXX] immediatly as we were about to lose power. And we did going 70MPH on the interstate, no power, no acceleration, we were trying to find a place to get us off the interstae befor we were rearended. We had our 2 dogs, our truck packed for the 650 mile trip. This was XXX as of today XXX, they cant tell us what is wrong. This vehicle has 25k miles, at 12k miles the wiring harness failed and we were out 6-7 weeks without our SUV. I WILL NEVER FEEL SAFE AGAIN IN THIS CAR. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Nov 4, 2026 · Electrical, Engine · MT

48v dc system failure, no element from dealer. Driving car and it completely lost power and left us stranded on the highway. Towed to local shop. They have diagnosed it with engine failure, in addition to 48v system failure.

Filed Oct 7, 2026 · Airbags, Engine · TX

Component Failed & Availability: The high-pressure fuel system and the Supplemental Restraint System (SRS) have failed. The vehicle is currently available for inspection upon request. Safety Risk: The vehicle experiences severe heat-soak depressurization, causing unpredictable engine stalling, sudden loss of power, and violent pressure lag during hot starts and acceleration. This creates a severe crash hazard when attempting to enter or maneuver in traffic. Simultaneously, the primary airbag/restraint matrix is faulted, meaning occupants are unprotected if an accident occurs due to the stalling. Warning Lamps & Symptoms: The Check Engine Light is illuminated, actively displaying DTC P00C6-00 (Fuel Rail Pressure Too Low - Engine Cranking Bank 1). The SRS warning light is also continuously illuminated.

Filed Sep 23, 2026 · Acceleration, Lights · CA

The range rover would not start had to jump start, vehicle is available completely dead does not jump start After finally starting the vehicle exiting the parking lot car completely lost all power completely turned off I was unable to steer the car nor apply the brakes Towed to the dealership a battery test was done and charging system check They did not find the issue Vehicle was inspected by the dealer only at time when the car was brought in charging system fault detected warning

Filed Jul 13, 2026 · Electrical · NJ

**Component/System:** 48V Mild Hybrid Electric Vehicle system, including the DC/DC converter subject to JLR recall D126, MHEV battery/Battery Energy Control Module, starter generator/alternator system, 12V charging system, telematics control module, and related vehicle communication/electrical modules. The vehicle and components are available for inspection upon request. **Description of Complaint:** My 2020 Land Rover Range Rover P400 MHEV, VIN [XXX], experienced serious electrical and high-voltage/MHEV system failures involving the 48V mild-hybrid system and DC/DC converter system. Before the original failure, the vehicle displayed the warning message **“High Voltage Shutdown Not Possible — System Live.”** The warning would appear on the instrument cluster while driving. The vehicle later displayed **“Stop Safely — Electrical Fault Detected.”** The vehicle then shut down while in operation, and steering assist was lost/steering became locked or extremely difficult to control. This created a serious safety risk because the vehicle lost power/drive functionality and steering assistance while being operated. The vehicle was taken to Jaguar Land Rover Parsippany for the D126 DC/DC converter recall/interim repair. The DC/DC converter is part of the 48V MHEV system and manages power transfer between the 48V and 12V electrical systems. After the D126-related repair, the vehicle would not start at pickup and had to be jump-started. The dealer later diagnosed a telematics control module issue/parasitic draw, but the vehicle continued to have electrical and high-voltage warnings. After the interim DC/DC repair, the **“High Voltage Shutdown Not Possible — System Live”** warning returned while driving. The malfunction indicator/check engine light also came on. Jaguar Land Rover Parsippany confirmed fault codes INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 14, 2026 · Brakes, Transmission · TX

At 613 miles, this 2025 Land Rover Range Rover SE experienced simultaneous brake fluid loss from the rear right wheel area, partial loss of engine power, and multiple warning lights including “Stability Control Not Available” and “Restricted Performance.” The vehicle required emergency flatbed towing. DFW Land Rover Dealer inspection identified damage at two points on the brake line near the rear right wheel. The damage shows longitudinal abrasion scoring along the line consistent with chafing against a vehicle component during normal operation, not external impact. The underbody shield in the same area shows no deformation or penetration that would be expected from an external object. The vehicle has been driven only in normal urban conditions with no incidents, off-road use, or known impacts. The dealership has attributed the damage to external influence despite no supporting physical evidence. Warranty coverage has been denied pending escalation to Land Rover North America. A brake line failure of this nature at highway speed could result in catastrophic brake loss and serious injury.​​​​​​​​​​​​​​​​

Filed May 31, 2026 · Electrical · IL · 1 injury

On the morning of [XXX] my wife was driving her 2025 Range Rover a short distance when an electrical fault came on the dash reading "stop safely Electrical fault detected". Upon turning into our driveway right after that warning came up, a variety of other warnings came on the dash including a transmission overheat warning. The car then started losing electrical functions and as she pulled into the garage. The vehicle was half way in the garage, my wife pressed the park button and tried to exit the vehicle. She was not aware that the park function no longer worked and that the car had completely lost all power and functions. The vehicle began rolling backwards due to the grade of the garage and she had to try to physically stop the vehicle or it would crush her between the door and garage. After attempting to physically stop it she realized she couldn't and jumped back in the car and applied the brakes. Her back was injured in the process of trying to hold the vehicle from rolling. She called me and had to sit in the vehicle for 20 minutes until I could get home to chock the wheels and get her out of the car. Zeigler Land Rover out of Schaumburg is where the vehicle was purchased new in November. When I reached out to them they claimed they never had this issue before. The dealership repeatedly asked my wife and I in seperate text messages "if we could describe where the smoke came from". No smoke was ever seen or reported from either of us. The supplied a Range Rover Sport loaner vehicle a few days after our Range Rover was picked up. They continued to tell me that they have never seen this issue before and are working with Land Rover to try and identify it. On Tuesday [XXX] the loaner vehicle displayed the same message "stop safely, electrical fault detected". She parked the vehicle and hasn't driven it since. The dealership didn't seem concerned with this happening again and brought us yet another loaner. No progress has been made on our car. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFO

Filed Apr 16, 2026 · Brakes, Electrical · TX

Known Recall Issue: The failure pattern aligns with known manufacturer defect categories involving: •Engine torque / internal engine failure conditions •Cooling system failure leading to overheating Shortly after I purchased my 2015 Range Rover, I started to have repeated and escalating safety-critical failures involving sudden loss of power, engine malfunction, and vehicle shutdown while driving at highway speeds. The vehicle has experienced multiple incidents of complete or partial power loss while in motion, resulting in near-collision events. Despite repeated repairs by authorized dealerships, the underlying defect has not been resolved. The failure pattern suggests a systemic mechanical defect involving engine performance and cooling system integrity rather than isolated maintenance issues. The primary safety concern is sudden loss of propulsion while driving at highway speeds, which has occurred on more than one occasion. These incidents present a significant risk of: •Rear-end collisions •Loss of vehicle control •Serious injury or fatality TECHNICAL FAILURE PATTERN Observed progression of failure: •Oil leakage / burning smell •Internal engine degradation symptoms •Cooling system failure and overheating •Electrical instability •Final engine shutdown / seizure events This suggests a systemic mechanical defect affecting engine integrity and thermal management systems. REQUEST FOR INVESTIGATION I respectfully request the federal safety agency to: 1.Investigate potential safety defects in this vehicle and model year 2.Evaluate whether similar failures are occurring in other vehicles 3.Assess adequacy of existing recall coverage 4.Review risk associated with sudden engine shutdown while driving 5.Determine whether recall expansion or additional safety action is warranted

Filed Mar 17, 2026 · Electrical · NJ

On March 11, 2026, the vehicle's DC/DC Converter failed completely without warning. It was towed to the Land Rover of Monmouth (NJ) where this failure was confirmed. The failure of the DC/DC converter resulted in the vehicle going completely "dead" while driving with my wife and children. There was no warning. Fortunately for my family and I, it occurred on a side street by my home and did not occur on a highway or other busy road. Had this occurred on a highway or busy road, this would have absolutely put our lives in danger. As noted, the failure of the DC/DC converter was confirmed by the Land Rover of Monmouth (NJ) authorized dealership (I have a video from the dealership stating and confirming the failure). There were zero warnings at the time it occurred; it just lost power and shut down. Based on my research after this incident, it appears to be a pervasive problem with Land Rover and while there appear to be active recalls for certain Land Rover models, inexplicably, there is no current recall for this particular model. My wife and I are very concerned that even if/when it is repaired, this will happen again. This is the primary vehicle my wife uses for transportation with our young children and I am extremely afraid of the risk that this poses to their lives. I've notified the dealership from where I purchased it and was directed to contact Land Rover USA. I have not heard back from Land Rover USA. This well-documented, pervasive defect puts lives at risk and is extremely dangerous. As an attorney, I find Land Rover's knowledge of this frequent and extensive issue -- while only having a limited recall and not providing any information to owners of other Land Rover vehicles -- is a reckless disregard for the safety of others and creates an unreasonable risk of harm to others, like my family.

Filed Feb 24, 2026 · Electrical · MI

On the previous day, The vehicle began with notifying me that the battery needed charging and recommended starting the vehicle to charge it. This was done and drove home from work. Next day same notification but when I started driving, the car started losing power, no acceleration at all. Drove for about 3 minutes without ability to accelerate, then suddenly there was no power, just rolling, in a busy street. Pulled over into a business premises and called tow. Dealer informed me the DC to DC converter was bad and needed replacement at 2k, this part was also in back order so no timeline on completion.