Acura RDX 2019–2021 — technical service bulletin
Bulletin B20-032 · NHTSA communication 10200851 · issued Aug 30, 2021
Technical service bulletin
communication type
Power Train
component
2019–2021
model years
3
vehicle entries
Official summary
Service Bulletin - The AWD indicator comes on with DTC C1843-62 (left rear differential fluid pressure deviation) and/or DTC C1844-62 (right rear differential fluid pressure deviation).
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.