Acura RDX 2013–2014 — technical service bulletin
Bulletin B15-012 · NHTSA communication 10108482 · issued May 6, 2015
Technical service bulletin
communication type
Electrical System
component
2013–2014
model years
2
vehicle entries
Official summary
Service bulletin - the electric differential pressure solenoid (edps) has excessive oil pressure, causing the awd indicator to come on and dtc c-1858-73 (differential fluid pressure deviation high) to set.
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.