2000 S430 W220 with 115,000 miles. Had an indy mechanic replace lower right and left control arms. The car was returned to me with 2 error messages. ABS light is on and BAS message is flashing and another maybe vehicle stability error message.

The error reset at start up and returnd as soon as I start driving. They test drove and put car back on lift and declared no obvious problem.

The errors did not clear after driving 2 10 mile trips. Any ideas of what I should have them look for or do I need to take it back to dealer? They will look at car again next week.

BTW last month the dealer replaced the airmatic pump and repaired a link in that system.