Vehicles affected by service bulletin:
- 2009 BMW 7 Series sedan
- 2010 BMW 7 Series sedan
- 2011 BMW 7 Series sedan
- 2012 BMW 7 Series sedan
- 2010 BMW ActiveHybrid 7
- 2011 BMW ActiveHybrid 7
- 2012 BMW ActiveHybrid 7
- 2009 BMW 5 Series Gran Turismo
- 2010 BMW 5 Series Gran Turismo
- 2011 BMW 5 Series Gran Turismo
- 2012 BMW 5 Series Gran Turismo
- 2010 BMW 5 Series sedan
- 2011 BMW 5 Series sedan
- 2012 BMW 5 Series sedan
- 2013 BMW 5 Series sedan
- 2011 BMW 6 Series convertible
- 2012 BMW 6 Series convertible
- 2011 BMW 6 Series coupe
- 2012 BMW 6 Series coupe
- 2010 BMW X5
- 2011 BMW X5
- 2012 BMW X5
- 2013 BMW X5
- 2008 BMW X6
- 2009 BMW X6
- 2010 BMW X6
- 2011 BMW X6
- 2012 BMW X6
- 2013 BMW X6
- 2014 BMW X6
- 2009 BMW ActiveHybrid X6
- 2010 BMW ActiveHybrid X6
- 2011 BMW ActiveHybrid X6
The problem: Timing chains on N63 engines have been found to stretch and wear out prematurely, resulting in premature valvetrain wear and reduced engine performance.
Corrective action: BMW has come up with a test procedure to determine timing chain wear. Dealers will perform this test in conjunction with the N63 Customer Care Package, which is designed to ensure proper long-term engine operation. After this test has been performed, dealers will replace the chain as necessary, along with all accompanying hardware, including the chain tensioner and hardware as well as the chain sprocket. The oil and oil filter will be changed, and techs will reprogram the vehicle's onboard computer to alert drivers of shorter oil-change intervals.
Warranty info: This repair is covered under the new car limited warranty or, if applicable, the certified pre-owned warranty. If an extended warranty is in place and the factory warranty has expired, the repair might be covered under that warranty.
What owners should do: Call your local dealer with your vehicle's identification number to determine if it's eligible for repairs under this service bulletin. You can call BMW directly at 800-831-1117 or NHTSA at 888-327-4236. Reference TSB No. 111614.
Need to find a dealer for service? Go to Cars.com Service & Repair to find a local dealer.
Editor's note: This is only one of dozens of service bulletins issued each month by automakers. Please check your automaker's website to see if your vehicle has any service bulletins pending.
Check for recalls here on Cars.com.