BMW bulletin B631223
What it saysUpon performing a vehicle read out, faultcode (CD0D16- Control unit light (BEL)(LIN): Wrong variant installed) is stored inthe BCP (Basic Central Platform). NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Oct 17, 2023, received Nov 1, 2023, about the exterior lighting. It names 6 model years (2022–2024). 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 communicationUpon performing a vehicle read out, faultcode (CD0D16- Control unit light (BEL)(LIN): Wrong variant installed) is stored inthe BCP (Basic Central Platform). Note: Functionality of the exterior lights and switch is fully operational when fault code is present.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B631223 | Service bulletin | Oct 17, 2023 | 10244243 | PDF, 818 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 themAlso filed against model years this site has no page for: 2022 BMW 540D; 2023 BMW 540D.
A 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 4 model years this bulletin names have filed 68 complaints with NHTSA since 2015. 7 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.
Booked the appointment with BMW of Portland for November, 10,2025 For 9 o'clock AM. Arrived at dealership, checked in and left vehicle. I was called about 45 minutes later and informed that they would not be able to preform the recall repair on my car due to parts that were needed and associated with the recall , asked me to pay for it…
2024 BMW 5 Series · Electrical System · filed with NHTSA Nov 10, 2025 · ODI 11698655
I am unknown of what system has failed but the issue is that while the car is in motion, it will completely shut off. All Electrical will disengage and there have been times where a pop up has come on my screen stating that air bags and seat belts are non functioning to get to a service station as soon as possible.
2023 BMW 5 Series · Electrical System · filed with NHTSA Apr 29, 2025 · ODI 11657485
The vehicle has had intermittent charging issues where when the battery is below a certain level, it will fail to fully charge. I took it to the dealership and the technician admitted there has been issues with the charging cables and asked me to return with pictures of the error codes.
2024 BMW i5 · Electrical System · filed with NHTSA Oct 15, 2026 · ODI 11771462
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 exterior lighting
Source: same model, same component group5 other manufacturer communications filed against these BMW models under the same component group (exterior lighting), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B631025 | Service bulletin | Nov 10, 2025 | RSU availability. The ambient lighting color cannot be saved permanently. The personalized color of the ambient lighting resets after the ve… |
| B631023 | Service bulletin | Aug 19, 2025 | ?Condensation is present in the inner surface in one or both (inner and/or outer) taillamps. |
| B630418 | Service bulletin | Jul 21, 2025 | DAYTIME RUNNING LIGHT IS DIM OR DISCOLORED: This Service Information Bulletin (Revision 2) replaces SI B63 04 18 dated January 2019. One or… |
| B630124 | Service bulletin | May 22, 2024 | The overhead reading lights are not bright enough on SP21 (Service Pack 2021) vehicles. |
| B630821 | Service bulletin | Jun 1, 2023 | Headlight check control (CC) message 128 "High beam headlight failure" is displayed. The following fault codes are stored during a vehicle t… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for BMW, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is BMW B631223 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 B631223 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 BMW warranty extension on file lists the ones BMW has filed.
Which vehicles does B631223 cover?
The manufacturer filed it against 6 model years: 2024 BMW 5 Series, 2023 BMW 5 Series, 2022 BMW 5 Series, 2024 BMW i5, 2022 BMW 540D, 2023 BMW 540D. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.