Acura RDX 2013–2014 — technical service bulletin
Bulletin Service Bulletin · NHTSA communication 10108837 · issued Feb 14, 2015
Technical service bulletin
communication type
Engine and Engine Cooling
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.