TSB SB-26-18-001 — Tesla Service bulletin
SB-26-18-001 is a service bulletin on file with NHTSA for 2 Tesla models, 2021–2026 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. On some Model S and Model X vehicles, the compression gap of the HVAC drain funnel seal is wider than intended, which may cause water ingress. Inspect the sponge area of the HVAC drain funnel for water ingress. If water ingress is present, rework the HVAC drain funnel seal.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years SB-26-18-001 names
| Vehicle | Model years |
|---|---|
| Tesla Model S | 2021, 2022, 2023, 2024, 2025, 2026 |
| Tesla Model X | 2021, 2022, 2023, 2024, 2025, 2026 |
Every document filed under SB-26-18-001
| Document ID | Filed | Type |
|---|---|---|
| SB-26-18-001 | February 4, 2026 | Service bulletin |
Questions buyers ask
What is TSB SB-26-18-001?
SB-26-18-001 is a service bulletin filed with NHTSA by Tesla, covering 2 Tesla models across the 2021–2026 model years. NHTSA's summary reads: On some Model S and Model X vehicles, the compression gap of the HVAC drain funnel seal is wider than intended, which may cause water ingress. Inspect the sponge area of the HVAC drain funnel for water ingress. If water ingress is present, rework the HVAC drain funnel seal.
Which vehicles does SB-26-18-001 cover?
NHTSA's file names Tesla Model S (2021–2026); Tesla Model X (2021–2026). 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 SB-26-18-001 a recall, and is the repair free?
No. SB-26-18-001 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 SB-26-18-001?
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 SB-26-18-001, 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 SB-26-18-001. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.