BMW has discovered that certain 2007-2010 model year vehicles may experience partial failure of the High-Pressure Fuel Pump (HPFP) which is part of the direct fuel injection system on certain 1 Series, 3 Series, 5 Series, X6, and Z4 models. Specifically, vehicles powered by the twin-turbocharged 3.0-liter inline-6 engine (internally dubbed "N54") are affected. Symptoms include long engine starting times and sometimes the illumination of the Service Engine Soon lamp in the instrument cluster, possibly accompanied by reduced engine performance (Fail Safe operation).

As a result, BMW will extend the emissions warranty coverage period to 10 years or 120,000 miles, whichever comes first, on affected vehicles in all 50 States. If the HPFP fails during the extended warranty coverage period, BMW will replace it with a newer-production version. Customers who experience long starting times or notice the Service Engine Soon lamp should contact an Authorized BMW Center to schedule a service appointment. Customers with further questions should contact BMW Customer Relations at 1-800-831-1117 or email customer.relations@bmwna.com.

Full story
http://www.autoblog.com/2010/10/12/c...afe-causes-un/

repost pingy, x3 I think :cool:

wow that many

and wrong section also pingy :P

why dont the F10 have this engine?

f10 535i has the N55, not N54..although there have been reported hpfp failures already with the N55 (none with the f10 AFAIK, rather the e9x .35 models)

right got you sounds like the turbo engine are not that good after all just like the bad old days. :confused:

first gen anything will have it's problems, but this is BMW's second attempt with an I6 FI engine (with the N55) and they still can't seem to get it right. Not to mention that the N54 engine has been around a good number of years now, so you'd think they'd find a permanent fix for this...SMH. I haven't read any reports of failure with the TT V8 engine tho...so let's hope that stays that way....

Can someone describe the long start-up?
Is the engine actually cranking or just non-responsive when hit the start button?

long/multiple cranks...not "non-responsive"