Service bulletin 240213

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.

NHTSA's summary

"8-Speed ZF Automatic Transmission Diagnosis and Troubleshooting Hints. Specialized assistance is often needed in diagnosing symptoms involving 8-speed automatic transmissions and determining the root cause of complaints. Due to the high cost and complexity of the 8-speed automatic transmissions, an Enhanced Technical Support process has been developed to help identify the root causes of customer complaints relating to automatic transmission concerns. All diagnostic and troubleshooting steps listed in this Service Information bulletin should be performed prior to submitting a TC case. A TC case may be submitted ONLY after all appropriate diagnostic steps and/or hints listed below were performed and diagnostic results are inconclusive, or when a component replacement (transmission or Mechatronic) is requested. IMPORTANT TC Cases will NOT be processed and will be rejected as ""unjustified"" if the basic diagnostic troubleshooting procedures, fault test plan(s), and corresponding information required by this SIB are not performed and included in the case notes."

The document

• NHTSA's copy of the document (PDF)
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The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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