Land Rover Defender 2022–2025 — technical service bulletin
Bulletin TUCC_APR2025_23 · NHTSA communication 11017744 · issued Apr 11, 2025
Technical service bulletin
communication type
Electrical System
component
2022–2025
model years
8
vehicle entries
Official summary
If there are stored codes, please run a workflow based on relevant symptom dropdowns. As the workflow is run, you will be prompted with a test plan titled “Startup Battery Test – Li-ion.” Please run this test plan. If the test plan finds a fault, you will be granted AutoFRED approval and may proceed with repairs.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.