*Possibly* a vacuum brake booster issue - may also be normal operation..
Reason for the suggested test drive!
What are the best Lincoln repair shops?
RepairPal Certified shops can diagnose and repair your 2012 Lincoln MKX. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
*Possibly* a vacuum brake booster issue - may also be normal operation.. Reason for the suggested test drive!