TSB 15-308-23R — Subaru Service bulletin
15-308-23R is a service bulletin on file with NHTSA for 4 Subaru models, 2000–2001 model years, filed and re-filed as 3 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. This Service Information Bulletin outlines a systematic procedure for diagnosing parasitic draw (dark/standby current) in vehicles experiencing battery drain when the ignition is off, leading to no-start conditions or frequent jump-starts.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 15-308-23R names
| Vehicle | Model years |
|---|---|
| Subaru Forester | 2000, 2001 |
| Subaru Impreza | 2000, 2001 |
| Subaru Legacy | 2000, 2001 |
| Subaru Outback | 2000, 2001 |
Every document filed under 15-308-23R
Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.
| Document ID | Filed | Type |
|---|---|---|
| 15-308-23R | October 28, 2025 | Service bulletin |
| 15-308-23R | August 15, 2024 | Service bulletin |
| 15-308-23R | July 17, 2024 | Service bulletin |
What 15-308-23R covers
Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 15-308-23R?
15-308-23R is a service bulletin filed with NHTSA by Subaru, covering 4 Subaru models across the 2000–2001 model years. NHTSA's summary reads: This Service Information Bulletin outlines a systematic procedure for diagnosing parasitic draw (dark/standby current) in vehicles experiencing battery drain when the ignition is off, leading to no-start conditions or frequent jump-starts.
Which vehicles does 15-308-23R cover?
NHTSA's file names Subaru Forester (2000–2001); Subaru Impreza (2000–2001); Subaru Legacy (2000–2001); Subaru Outback (2000–2001). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB 15-308-23R a recall, and is the repair free?
No. 15-308-23R is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of 15-308-23R?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 15-308-23R, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 15-308-23R. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.