2021 Land Rover Discovery Electrical system Problems
- Complaints
- 9about this part
- Share
- 82%of 11 total for the year
- Median mileage
- 108,029miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 9 complaints about the electrical system of the 2021 Land Rover Discovery, 82% of the 11 complaints for this model year. Where a mileage was given, the median is 108,029 miles. 3 recall campaigns on record are filed under a similar system.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I am filing a safety complaint regarding a sudden and complete loss of power event while driving my 2021 Land Rover Discovery. The vehicle experienced a DC-DC converter failure with no warning, resulting in a sudden shutdown. The engine lost power, critical systems went offline, and I was unable to shift the vehicle into neutral. The vehicle became immobilized in active traffic, creating a dangerous situation. This incident occurred without warning and left me with no ability to safely move the vehicle out of traffic or rely on normal emergency functions. …”
NHTSA complaint #11732006, filed 2026-04“While driving my 2021 Land Rover Discovery (MHEV) in active traffic, the vehicle suddenly displayed an “Electrical system fault – Stop safely” warning. Immediately after the warning, the vehicle lost power and shut down, leaving me stalled in traffic with no ability to safely move the vehicle out of the roadway. There was no prior warning, no gradual degradation, and no driver-caused condition. The shutdown appeared to be related to the 48-volt mild-hybrid electrical system, possibly involving the DC-DC converter or battery management system, which disabled critical vehicle functions. …”
NHTSA complaint #11708304, filed 2026-01“2021 Land Rover Discovery 48V mild hybrid (MHEV). Recurring 12V system failures: repeated depleted/dead 12V batteries and no-start events. The 12V battery has failed and been replaced three times during my ownership (two documented at a franchised Land Rover dealer and an independent shop), plus a prior replacement under the previous owner per the vehicle history report. …”
NHTSA complaint #11742136, filed 2026-06“The contact owns a 2021 Land Rover Discovery. The contact stated that while driving at an undisclosed speed, several unknown warning lights were illuminated, and the vehicle stalled in the middle of the roadway. The contact associated the failure with NHTSA Campaign Number: 26V248000 (Electrical System). The vehicle was towed to the dealer to be diagnosed. The dealer retrieved several fault codes associated with the power supply failure and DC Converter failure. The vehicle was not repaired because there was no repair available for the DC-DC converter failure. …”
NHTSA complaint #11757979, filed 2026-08, 108,029 miles“This vehicle should be considered as a drive at your own risk vehicle. Engine randomly fails to start using push button start in coordination with pressing on the brake pedal. Dash and gages indicated all electrical systems were on and no warning symbols were displayed. Repeated attempts by owner to start vehicle failed. Attempts using remote start app erroneously indicated that the vehicle was already in operation. Fail-to-start generally existed for 2-4 hours before the vehicle would randomly start. …”
NHTSA complaint #11436854, filed 2021-10Related recalls
- 26V599000Sep 17, 2026Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2019-2024 Land Rover Range Rover Sport, 2020-2024 Land Rover Range Rover Evoque, Land…Covers: Land Rover Discovery 2021–2024, Range Rover Sport 2019–2024, Range Rover 2020–2024 +6 more
- 26V248000Apr 17, 2026Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2021-2024 Land Rover Range Rover Velar and Land Rover Discovery, 2020-2023 Land Rover…Covers: Land Rover Discovery 2021–2024, Range Rover Sport 2019–2024, Range Rover 2020–2024 +6 more
- 21V457000Jun 17, 2021Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2020-2021 Land Rover Discovery vehicles. A loose contact between the battery ground…Covers: Land Rover Discovery 2020–2021
Related service bulletins
- 11033422May 16, 2026Door Zone Module - Quiescent Drain
- 11032422Apr 17, 2026Door Zone Module - Quiescent Drain
- 11031113Mar 20, 2026Software Over The Air (SOTA) updates are failing to complete.
- 11030751Mar 10, 2026Smart Key Deactivated message on instrument cluster and unable to start their vehicle
- 11029849Feb 20, 2026Door Zone Module - Quiescent Drain
- 11029600Feb 13, 2026There is a concern with the 48Volt charging system(DC/DC) with the vehicle.
- 11029598Feb 13, 2026There is a concern/fault with the 48Volt MHEV system.
- 11029576Feb 13, 202612v startup battery flat - mild hybrid electric vehicle (mhev)
- 11029556Feb 12, 2026Once the vehicle is powered down via ignition cycle, it may not restart depending on remaining residual charge.
- 11028601Jan 28, 2026There is a concern with the 48Volt charging system(DC/DC) with the vehicle.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 4 | 50% |
| 2023 | 5 | 71% |
| 2022 | 6 | 55% |
| 2021 | 9 | 82% |
| 2020 | 9 | 47% |
| 2019 | 15 | 38% |
| 2018 | 8 | 22% |
| 2017 | 18 | 33% |
| 2004 | 3 | 10% |
| 2003 | 6 | 13% |
| 2002 | 1 | 6% |
| 2001 | 1 | 8% |
| 2000 | 2 | 7% |
| 1999 | 1 | 6% |
| 1998 | 5 | 15% |
| 1997 | 2 | 6% |
| 1996 | 9 | 14% |
| 1995 | 7 | 14% |
Other parts of the 2021 Land Rover Discovery
4 complaintsTransmission and drivetrain
4 complaintsEngine
1 complaintsFuel system
1 complaintsSteering
1 complaints
← All problems reported for the 2021 Land Rover Discovery
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology