As of January 2019, derFix published monthly digital articles.
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In this issue: 2005 Jetta 2.5L PCV/Vacuum Leak • Getting to Know Mr. Mezger, Part 2 • 2009 Tiguan 2.0L Fuel Pressure Error • This Audi Diagnosis Was Bad Timing for All • VW and Audi Ignition Coils • Tips and Tricks with a 2008 Audi A6 3.2L No Crank/No Start
In this issue: Diagnosing Audi Electrical Shorts, Porsche Oiling Systems, DoIP, Audi Carbon Buildup, Porsche Transmissions, DVOM, EVAP
In this issue: Audi Crankcase Ventilation and Secondary Air Injection; Understanding Porsche 9A1 Oiling Systems; VW Frame Dimensions; CAN Analysis with J2534; Porsche Brakes; Audi Turbochargers; VW 01M Transmission 65535 Error
In this issue: VW 01M Speed Sensors; Audi Climate Control Systems; Understanding Porsche Brakes; DoIP, Part 1; VW City Golf 2.0L BEV Engine Mysteries; Audi Fuel Systems; VW Golf Trunk Floor Replacement
In this issue: Audi Care and Feeding of Audi Suspension Systems; Audi Sunrroof Service; Porsche Turbocharging Porsches — When and Why; Volkswagen Driver Assistance Systems; Volkswagen Fasteners; Volkswagen Engine Oil Leak
In this issue: Audi Electro-Mechanical Parking Brake System; Audi Maintenance Tips; Porsche Coil Considerations; Porsche Engine Rebuild; VW Coding Mysteries; VW Wire Harness; VW A/C Lubricant & Refrigerant