One problem related to engine rattling and whining sounds has been reported for the 2011 Infiniti QX56. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Infiniti QX56 based on all problems reported for the 2011 QX56.
Engine is making loud whining noise and jerks. Noise is heard when the truck starts and is on iddle. There was a service bulletin issued in 2016 itb16-015. We were never notified of this campaign. When calling infinity corporate they denied fixing the issue because they could not see the maintenance record for the truck since it was not taken to an infinity dealer. The truck gets maintenance from other places like jiffy lube etc. Our claim was denied they said the campagin expired in February 2018.