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HomeBulletinsAlfa Romeo S1408000384
Manufacturer communication · Service bulletin

Alfa Romeo bulletin S1408000384

Alfa Romeo filed this with NHTSA as a service bulletin dated Mar 4, 2026, received Apr 17, 2023, about the electrical system — 7 documents under this number: S1408000384 REV. J, S1408000384 REV. I, S1408000384 REV. H, S1408000384 REV. G and more. It names 26 model years (2016–2026). 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.

What the bulletin says

Source: NHTSA's summary of the manufacturer's communication

"Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS related Diagnostic Trouble Codes (DTCs), or Battery Warning Lamp On "

Kind Service bulletin Manufacturer date Mar 4, 2026 Received by NHTSA Apr 17, 2023 Components Electrical System, Engine First dated Feb 14, 2023

Documents filed under this number

DocumentKindDatedNHTSA idAt NHTSA
S1408000384 REV. JService bulletinMar 4, 202611030035not yet checked
S1408000384 REV. IService bulletinFeb 14, 202611028904not yet checked
S1408000384 REV. HService bulletinJan 25, 202511013171not yet checked
S1408000384 REV. GService bulletinJan 7, 202511012777not yet checked
S1408000384 REV. FService bulletinJun 25, 202411002828not yet checked
S1408000384Service bulletinJan 10, 202410251783not yet checked
S1408000384Service bulletinFeb 14, 202310234420not yet checked

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.

Common questions

Source: NHTSA, 49 CFR 579.5

Is Alfa Romeo S1408000384 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 S1408000384 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.

Which vehicles does S1408000384 cover?

The manufacturer filed it against 26 model years: 2020 Alfa Romeo 4C, 2019 Alfa Romeo 4C, 2018 Alfa Romeo 4C, 2017 Alfa Romeo 4C, 2016 Alfa Romeo 4C, 2026 Alfa Romeo Giulia and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.