when the engine is running, why did the yellow engine diagnostics warning lamp flash?
if OBD-II read the codes~
Check the Massive Air Flow (is a sensor on the Air Filter)
your car is obd2, you need to read the codes and let us know what the car had to help you
Looking for a Used E-Class in your area?
CarGurus has 20,565 nationwide E-Class listings starting at $2,495.
Search Mercedes-Benz E-Class Questions
Mercedes-Benz E-Class Experts