In this issue:

Premium Brake Service Should Include Runout

The best rotors in the world will soon come back with a pulsation problem if mounting errors produce even a small amount of wobble.

Battery Testing: Dead, or Alive and Well

For more than a century, lead-acid batteries have been used in automobiles. Here’s a new take on testing them.

One Point of the Star: Fuel Pump Circuits

Ignition, fuel distribution and fuel supply make up the three points of driveability diagnosis

Factory Service Bulletins: Midtronics Battery Charger for Reflashing & ESP Displayed

These suggestions and solutions for technical problems are from service bulletins and other information published by Mercedes-Benz, selected and adapted for independent repair shops.