BMW bulletin B662719
What it saysLane change warning: light on exterior mirror no longer works. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Sep 1, 2022, received Aug 19, 2019, about the lane departure — 2 documents under this number. It names 42 model years (2016–2023). 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 communicationLANE CHANGE WARNING: LIGHT ON EXTERIOR MIRROR NO LONGER WORKS. The Lane Change Warning (LCW) light on either one or on both of the exterior (side view) mirrors no longer illuminates. This also activates a CCM for "Driver Assistance system restricted" to be displayed in the CID. Faulty exterior mirror glass or wire connection.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B662719 | Service bulletin | Sep 1, 2022 | 10225127 | not found |
| B662719 | Service bulletin | Jul 1, 2019 | 10164017 | not found |
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.
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Model years it names
Source: as the manufacturer filed themand 2 more on this site: 2019 BMW Z4, 2016 BMW Z4.
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 42 model years this bulletin names have filed 1,875 complaints with NHTSA since 2015. 558 of them name Electrical System, Lane Departure, Visibility/Wiper — 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 2019 BMW X5, the 19 owners who gave an odometer reading for Electrical System reported it at a median of 55,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
Without warning, the dashboard lights and indicators go dark. The vehicle can be stationary or in motion when it happens. I have contacted the dealer, fields Bmw, twice. The first time the service department replaced the battery on my remote key control, the second time service told me it was a known problem at Bmw and they were working…
2019 BMW X3 · Electrical System · filed with NHTSA Jan 20, 2020 · ODI 11300465
The contact owns a 2019 BMW X7. The contact stated that while attempting to start the vehicle, the message that the starter motor was overheating was displayed and the vehicle failed to start. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the starter motor. The vehicle was repaired.
2019 BMW X7 · Electrical System · filed with NHTSA May 12, 2025 · ODI 11660474
The engine starter failed on my 2020 BMW Z4 M40i. The vehicle experienced starting failures and the repair shop diagnosed a faulty/shorted engine starter assembly. The symptoms and component failure match the exact defect description of active safety recalls NHTSA 24V-576 and 25V-636 (Starter Motor Fire Risk due to electrical short…
2020 BMW Z4 · Electrical System · filed with NHTSA Jul 21, 2026 · ODI 11751896
In depth: 2019 BMW X5 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 lane departure
Source: same model, same component group1 other manufacturer communication filed against these BMW models under the same component group (lane departure), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B660523 | Service bulletin | Oct 19, 2023 | Various functions of the camera-based driver assistance systems (ADCAM system) can lead to customer complaints. |
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 B662719 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 B662719 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 B662719 cover?
The manufacturer filed it against 42 model years: 2017 BMW M, 2016 BMW M, 2022 BMW X3, 2021 BMW X3, 2020 BMW X3, 2019 BMW X3 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.