BMW bulletin B660923
What it saysThe customer states that one or more of the following situations may occur: 1. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Oct 23, 2024, received Oct 1, 2023, about the steering — 2 documents under this number. It names 4 model years (2019–2020). 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 communicationThe customer states that one or more of the following situations may occur: 1. The availability of the Steering and Lane Control Assistant is deteriorating, and/or that the function allows thevehicle to move from side to side within the lane markings. 2. The parking space detection is less effective or hardly ever receives any parking space recommendations fromthe PMA.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B660923 | Service bulletin | Oct 23, 2024 | 11009427 | PDF, 215 KB |
| B660923 | Service bulletin | Sep 6, 2023 | 10242872 | PDF, 161 KB |
What the document itself lists
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 00 58 500 | Diagnosis Worktime Flat Rate | 2 FRU |
Read by machine from the document NHTSA serves (4 pages), read Sep 30, 2026. A part number is shown only where it matches BMW’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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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 4 model years this bulletin names have filed 145 complaints with NHTSA since 2015.
I am filing a safety complaint for my 2020 BMW X4, VIN . The vehicle recently began making a noticeable noise while turning. I reported this to an authorized BMW dealer before/during service and requested review for possible front-end, steering, suspension, axle, swivel bearing, tie rod, thrust rod, or vehicle-control safety issues.
2020 BMW X4 · Steering · filed with NHTSA Jun 9, 2026 · ODI 11742911
After car warms up and while driving in warmer temperatures, steering becomes loose, vehicle drifts in lane and becomes difficult to control. Even with steering assist enabled, vehicle cannot maintain a straight line. Knocking sound from underneath vehicle when steering to center at low speeds
2020 BMW X3 · Steering · filed with NHTSA Oct 6, 2022 · ODI 11488168
My car was totaled, I lost steering assistance, and it switched off while I was driving. The car was the subject of an open recall. I need this looked at because it might be a crash caused by a fault
2020 BMW 5 Series · Steering · filed with NHTSA Feb 14, 2026 · ODI 11717953
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 steering
Source: same model, same component group20 other manufacturer communications filed against these BMW models under the same component group (steering), newest first. The eight newest are listed; the rest are on the BMW list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 0032860300 | Service campaign | Sep 17, 2026 | Check Control message and a minimally changed steering feel. |
| 0032770300 | Service campaign | Sep 2, 2026 | Check Control message and a significant change in steering feel . |
| B320526 | Service bulletin | Aug 20, 2026 | “Cracking” noise might be heard when turning the steering wheel from lock to lock. See attached video V3202 26 EPS noise. |
| B320326 | Service bulletin | Apr 23, 2026 | “Groaning” noise from the EPS when the steering wheel is at the end stops. |
| B310426 | Service bulletin | Apr 23, 2026 | SITUATION When turning the steering wheel fully to the steering end stops, a ”groaning” noise can be perceived at the respective steering st… |
| B320126 | Service bulletin | Jan 22, 2026 | When turning left, a “creaking” noise may be heard from the EPS when near the steering wheel end stop. The noise occurs at speeds less than… |
| B320925 | Service campaign | Sep 18, 2025 | Delivery Stop - Steering Gear |
| B320825 | Service bulletin | Sep 3, 2025 | When the steering column is adjusted inwards towards the instrument cluster, the noise may occur near thelimit position. |
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 B660923 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 B660923 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 B660923 cover?
The manufacturer filed it against 4 model years: 2020 BMW 5 Series, 2019 BMW 7 Series, 2020 BMW X3, 2020 BMW X4. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.