In this issue:

A Look at Brake Rotor Wear

Why it happens, what you can do to mitigate it, and how it’s related to pedal pulsation. Also, new brake technology.

Will the Fuel Pump Make It Out and Back

What beats them up, and how to find out how much life is left.

M-Class Traction

It amounts to an electronic mountain goat.

Parts News: Lost S.O.S. ?

Whether for vehicles long out of production or for modern ones, your best source for Genuine Mercedes-Benz Parts is Mercedes-Benz.

Factory Service Bulletins

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.