Ram bulletin 08-157-25
What it says" R1H Radio Over The Air Update from T27.46 to U29.44 then U35.36 Software Version (FOTA) 2023 - 2024 (DT) RAM 1500 Pickup This bulletin applies to vehicles equipped with a Global Telematics Box Module (Sales Code RDG)… NHTSA’s full summary ↓
Ram filed this with NHTSA as a service bulletin dated May 24, 2025, received May 14, 2025, about the electrical system — 2 documents under this number: 08-157-25 REV. A and 1 more. It names 2 model years (2023–2024). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communication" R1H Radio Over The Air Update from T27.46 to U29.44 then U35.36 Software Version (FOTA) 2023 - 2024 (DT) RAM 1500 Pickup This bulletin applies to vehicles equipped with a Global Telematics Box Module (Sales Code RDG) and without IP Badge ""TRX"" (Sales Code XHD) and one of the following radios: ● Uconnect 5 Nav w 8.4"" Display (USA) (Sales Codes UBL). ● Uconnect 5 Nav w 8.4"" Display (CAN) (Sales Codes UEL). ● Uconnect 5 Nav w 12.0"" Display (USA) (Sales Code UBQ) ● Uconnect 5 Nav W 12.0"" Display (CAN) (Sales Code UEQ) ● Uconnect 5 NAV W 14.4"" Display (USA) (Sales Code UBW) ● Uconnect 5 NAV W 14.4"" Display (CAN) (Sales Code UEW) This bulletin provides information regarding the latest FOTA update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from T27.46 to U29.44 then U35.36."
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 08-157-25 REV. A | Service bulletin | May 24, 2025 | 11018682 | PDF, 176 KB |
| 08-157-25 | Service bulletin | May 11, 2025 | 11018262 | PDF, 175 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 283 complaints with NHTSA since 2015. 99 of them name Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
On the 2023 Ram 1500, the 12 owners who gave an odometer reading for Electrical System reported it at a median of 14,818 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
There is a loud humming/tumbling sound when decelerating at lower roms. It is very loud, obnoxious, and distracting. It was so loud that I couldn’t hear an emergency vehicle coming up behind me to get over. I have found 100’s of complaints on forums with the same issue with the 5th gen rams.
2023 Ram 1500 · Electrical System · filed with NHTSA Oct 8, 2023 · ODI 11548935
The truck died had to jump it. I was driving it and it stopped itself went into park automatically. it turned on the parking brake. and then died. Took several minutes to start.
2024 Ram 1500 · Electrical System · filed with NHTSA Jul 22, 2024 · ODI 11603846
In depth: 2023 Ram 1500 electrical problems →
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the electrical system
Source: same model, same component group296 other manufacturer communications filed against the Ram 1500 under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Ram list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| S2608000041 | Service bulletin | Oct 22, 2026 | MIL-On After a Powertrain Control Module (PCM) Replacement |
| S2608000040 | Service bulletin | Oct 21, 2026 | The Customer States There Is a Blinking Odometer. Firmware Over-The-Air (FOTA) Fails With Message To Visit The Dealer. |
| 08-388-26 | Service bulletin | Oct 20, 2026 | R1H Radio U43.17 Software Update - Dealer Option Customers may experience one or more of the following: SYMPTOM: ● Screen freeze or radio re… |
| 08-386-26 | Service bulletin | Oct 20, 2026 | Flash: Trailer Tow Module (TTM) Update Customers may experience the following: SYMPTOM: ● 'Check Trailer Turn Lamp' message is displayed in… |
| S2608000039 | Service bulletin | Oct 16, 2026 | Trailer Reverse Steering Control Radio Soft Button Blinks Even Without a User-Initiated Calibration |
| 08-280-26 | Service bulletin | Oct 16, 2026 | Flash: Integrated Trailer Control Module (ITCM) Update Customers may experience the following: SYMPTOM: ● "Check Trailer Turn Lamp" message… |
| 08-376-26 | Service bulletin | Oct 15, 2026 | Blindspot Alert Unavailable Service Required Warning Message Customers must experience on one or more of the following: SYMPTOM: ● “Blindspo… |
| 9100933 Rev 1 | Service bulletin | Oct 14, 2026 | FUSE BLOCK UNDERHOOD - PWR DIS A/C Blowing hot air or not working. A/C relay clutch not operating, dealers unnecessary replacing PDCs. Batte… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Ram, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Ram 08-157-25 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 08-157-25 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Stellantis warranty extension on file lists the ones Stellantis has filed.
Which vehicles does 08-157-25 cover?
The manufacturer filed it against 2 model years: 2024 Ram 1500, 2023 Ram 1500. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.