Service bulletin SIB-12-05-14

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

BMW: ON SOME VEHICLES THE ENGINE MAY FAIL TO RUN ON REPEATED COLD STARTS. THE ENGINE MAY TURN OVER BUT DOES NOT START ON A REPEAT COLD-STARTING ATTEMPT. THERE IS AN UNFAVORABLE DME SOFTWARE IN COMBINATION WITH THE NGK SILZKBR8B8S SPARK PLUG. A MODIFIED SPARK PLUG WAS INTRODUCED. MODELS INCLUDE X1 PRODUCED TO 8/2012, Z4 PRODUCED 8/2012, 5 SERIES AND 3 SERIES PRODUCED TO 8/2012. *JS

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Engine

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

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