Service bulletins for the 2003 Toyota Sequoia
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.
164 on file from NHTSA, as of 2026-10-19.
About C1231 on the 2003 Toyota Sequoia: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: C1231 are shown. Show all
| 00303 | 2004-02-17. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP. VSC LIGHT ON CONDITION WITH DIAGNOSTIC TROUBLE CODE C1231 IN THE SKID CONTROL COMPUTER MEMORY. A MODIFICATION TO THE SKID CONTROL COMPUTER LOGIC HAS BEEN MADE TO PREVENT THIS CONDITION. *TT |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.