Knocking noises going over bumps can be caused by worn sway bar end links. These end links have small ball joints that become loose and rattle. Replacement is the only fix.
Resources for the Repair and Maintenance of your 2011 Volvo C70
2011 Volvo C70
2011 Volvo C70 Problems
2011 Volvo C70 Recalls (Recent)
RepairPal Expert Overview:
Certain vehicles equipped with an optional spare tire and wheel kit were assembled with the incorrect tire pressure information label. A misprinted label could lead to improper tire inflation, which could result in a tire failure, increasing the risk of a crash. Dealers will inspect the affected vehicles and replace the incorrect label as necessary. The Volvo recall number is R247.
2011 Volvo C70 Questions and Answers
Service center can't find problem. No codes stored in system. I even drove to the shop with the alarm going off. The only way to stop it is to put the top down and back up. Am worried about sa...
The car goes into limp mode with the warning. Dealer replaced the Throttle Body. Got it back today and it did the same thing. Electronic or mechanical problem? Air injection relay? Any ideas?