In this issue:

Keeping the coast Clear: Intake Tract Maintenance

Everything from the air filter housing to the backs of the intake valves must be intact clean if that engine is to perform properly.

Information Help: Interpreting Mercedes-Benz Wiring Diagrams

High technology does not come without a price in the form of complexity. So, you need to know how to read the “electrical road map”

Cabin Fever: Auxiliary Cooling Systems

With the advent of dual and multiple zone HVAC, we now have multiple heater cores. So, what’s providing the coolant flow?

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.