TSB S2503000004 — Ram Service bulletin
S2503000004 is a service bulletin on file with NHTSA for 2 Ram models, 2013–2018 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Front Axle Disconnect (FAD) Electrical Connector Design Change On Replacement Axle Assemblies.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years S2503000004 names
| Vehicle | Model years |
|---|---|
| Ram 2500 | 2013, 2014, 2015, 2016, 2017, 2018 |
| Ram 3500 | 2013, 2014, 2015, 2016, 2017, 2018 |
Every document filed under S2503000004
| Document ID | Filed | Type |
|---|---|---|
| S2503000004 | November 7, 2025 | Service bulletin |
What S2503000004 covers
Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB S2503000004?
S2503000004 is a service bulletin filed with NHTSA by Ram, covering 2 Ram models across the 2013–2018 model years. NHTSA's summary reads: Front Axle Disconnect (FAD) Electrical Connector Design Change On Replacement Axle Assemblies.
Which vehicles does S2503000004 cover?
NHTSA's file names Ram 2500 (2013–2018); Ram 3500 (2013–2018). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB S2503000004 a recall, and is the repair free?
No. S2503000004 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of S2503000004?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under S2503000004, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under S2503000004. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.