In this issue:

Always Spinning:  Variable Displacement A/C Compressors

Only after ruling out non-compressor problems can you begin testing the variable displacement compressor itself.  Does the swash plate respond to different loads? If not, is it a problem with the compressor, sensor inputs, or with the controller?

Be a Door Man

Sensors, actuators, and electronic controls make repairing Mercedes-Benz doors a lot more important to vehicle safety and passenger comfort than in the past. The collision repair technician must deliver not only excellent fit and finish, but also ensure that all electronics function as required by the original equipment specifications.

Installing Custom Aftermarket Wheels & Tires

It’s a good bet that some of your customers consider their Mercedes-Benz vehicles a fashion statement.  Maybe they’re wild about some particular wheel and tire combination that’s impractical, maybe even unsafe.  What do you do?

Variable Length Intake Manifold Operation & Maintenance

For most of automotive history, the intake manifold was just an inactive lump of iron or aluminum.  Not anymore.