Service bulletins for the 2018 Subaru Impreza
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
528 on file from NHTSA, as of 2026-10-19.
About B1661 on the 2018 Subaru Impreza: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: B1661 are shown. Show all
| 07-123-17 | 2018-04-02. Service bulletin. ELECTRICAL SYSTEM. A design improvement has been made to the warning box assembly for improved responsiveness. The warning box is located inside the overhead map light assembly as shown in the illustrations below. The warning box part number has also been changed. On affected vehicles, the passenger?s airbag ON/OFF indicator flashes, the airbag warning lamp illuminates and DTC B1661: ?PASSENGER?S AIRBAG ON/OFF INDICATOR FAILURE? is stored. This DTC indicates communication between the warning box and combination meter has failed. The condition is more likely to be observed during high ambient temperature conditions. In some cases, there may also be a DTC B1502: ?WARNING BOX COMMUNICATION MALFUNCTION? stored in the combination meter memory. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.