BMW Engine Might Shudder
This bulletin applies to 2017 BMW 2, 3, 4 and 5-series equipped with a B460 engine. A buzzing noise may be heard from the Valvetronic motor when the vehicle is unlocked, before the engine is started, or after the engine is turned off.
There may be no related faults saved in fault code memory.Software in the DME (digital motor electronics) may cause the Valvetronic motor to shudder at the end stop position. Reprogram the vehicle with the latest version of ISTA Next. Always connect a BMW approved battery charger/power supply during programming.
About the Author
Information courtesy of Mitchell 1
Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.
Mike MavrigianMike Mavrigian
Motor Age Editor
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
