VW, Audi, Škoda & SEAT Guides

Practical guides from the Mechalex workshop in Aldermaston: DSG and mechatronic faults, Haldex servicing, carbon build-up and walnut blasting, cambelts, diagnostics and servicing for Volkswagen Audi Group vehicles. Choose a topic below.

Technician with an opened DSG gearbox and gearbox oil on the bench

DSG & Mechatronic

DSG and S tronic servicing, mechatronic faults, clutch wear and gearbox symptoms.

Technician under a car with a Haldex coupling and oil on the bench

Haldex & 4WD

Haldex, 4MOTION and quattro servicing, intervals and drivetrain faults.

Carbon-coated intake manifold held in front of an Audi

Carbon Cleaning

Carbon build-up on direct-injection engines and how walnut blasting removes it.

Technician running diagnostics on a tablet connected to a car

Diagnostics & Fault Codes

Warning lights, fault codes and symptoms, and how proper diagnosis finds the cause.

Mechanic checking an Audi in the snow with the bonnet open

Servicing & Maintenance

Service schedules, MOT preparation, parts and choosing the right garage.

Technician pointing at a cambelt and pulleys in an engine bay

Cambelts & Engines

Cambelt, timing belt, timing chain and water pump advice.

Gloved hands holding a brake pad in front of a brake disc

Brakes & Suspension

Brake wear, brake fluid, parts choices and suspension faults.

ECU and laptop showing a performance map

Remapping & Tuning

ECU remapping, tuning and what it means for insurance and reliability.