TSB Document:

• Sorry, the NHTSA has not posted this TSB document yet.

You can still get the detailed info from BMW for this TSB. Call your local BMW dealer's service department & ask for a copy of TSB# SI-B12-22-09.

Affected Component: ELECTRICAL SYSTEM

Summary

BMW: THE SPARK PLUGS IN THE AFFECTED SUVS MAY NOT ADHERE TO THE DURABILITY REQUIREMENTS. MICROCRACKS IN THE CERAMIC INSULATOR OF THE SPARK PLUG MAY OCCUR, WHICH COULD RESULT IN ENGINE MISFIRING AND ROUGH RUNNING, ESPECIALLY AT HIGHER ENGINE SPEEDS. 750I, 750LI, X5 M, AND X6 M VEHICLES. *PE

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