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Audi Q Drivetrain Diagnostics

As the Quattro system has evolved, so have the controls for the front, rear and center differential systems.

Subaru Drivetrain Noise Diagnostics

To reduce noise, some Subaru driveshafts use a special constant velocity joint to connect the two pieces of the driveshaft.

Drivetrain: Diagnostic Test Drive

Once the vehicle is moving, you might hear a whine coming from the center of the vehicle.

Transmission 2.0: Reprogramming Drivetrain Modules

If you’re performing drivetrain service and replacement, you need to be able to reflash or reprogram the transmission.

VIDEO: Missed Drivetrain Maintenance Opportunities

Take time to look up the service interval information. This video is sponsored by Auto Value and Bumper to Bumper.

VIDEO: Diagnosing Drivetrain Stabilization

The angles of the universal and cardan joints on a driveshaft have a limited range of motion. If the angle of the pinion, transmission or axle exceed the specifications, it can result in noise and damage to the drivetrain. Andrew Markel shows how a worn motor mount or damaged axle can result in a customer noise compliant.

How To Diagnose NVH Complaints In Drivetrain Components

Thanks to advanced technology, modern vehicles operate with fewer noise, vibration and harshness (NVH) complaints than ever ­before.

How To Diagnose NVH Complaints In Drivetrain Components

Thanks to advanced technology, modern vehicles operate with fewer noise, vibration and harshness (NVH) complaints than ever ­before. Consequently, when a NVH issue arises, it’s most likely caused by worn drivetrain components like universal joints, constant velocity joints or wheel bearing hub assemblies. In any case, NVH complaints can often be the most challenging to diagnose when you can’t duplicate the driving conditions under which they occur.

VIDEO: Replacing Gear Oil In Drivetrain Components

Andrew Markel stresses the importance of replacing lubrication in drivetrain components to prevent damage to the many parts inside them.

Active Drivetrains And Differentials

Vehicles equipped with 4×4 or all-wheel-drive (AWD) systems are designed to provide advantages throughout the year, but winter tends to bring these vehicles into focus.