TSB 9100855 — Ram Service bulletin
9100855 is a service bulletin on file with NHTSA for the Ram 1500, 2025 model years, filed and re-filed as 2 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. 2 WAY LUMBAR SWITCH If the Driver Seat Lumbar Support is inoperative, stuck, or not responding as expected, obtain the following information from the customer prior to replacing the lumbar switch: 1.Which lumbar function is not operating properly? -Inflate (Extend) -Deflate…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 9100855 names
Every document filed under 9100855
Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.
| Document ID | Filed | Type |
|---|---|---|
| 9100855 Rev 1 | July 7, 2026 | Service bulletin |
| 9100855 | July 6, 2026 | Service bulletin |
What 9100855 covers
Electrical, Body & structure, Seats & interior — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 9100855?
9100855 is a service bulletin filed with NHTSA by Ram, covering the Ram 1500 across the 2025 model years. NHTSA's summary reads: 2 WAY LUMBAR SWITCH If the Driver Seat Lumbar Support is inoperative, stuck, or not responding as expected, obtain the following information from the customer prior to replacing the lumbar switch: 1.Which lumbar function is not operating properly? -Inflate (Extend) -Deflate…
Which vehicles does 9100855 cover?
NHTSA's file names Ram 1500 (2025). 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 9100855 a recall, and is the repair free?
No. 9100855 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 9100855?
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 9100855, 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 9100855. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.