Audi A4 Owners & Service Manuals

Audi A4: All wheel drive (quattro)

Description

Applies to: vehicles with all wheel drive

The all-wheel drive system distributes the driving power variably to the front and rear axle to improve the driving characteristics. It works together with selective wheel torque control, which can activate when driving through curves.

Applies to: vehicles with quattro ultra: If the driving situation does not require all wheel drive, then the rear section of the drivetrain will decouple to save fuel. The system constantly determines and anticipates if all wheel drive is needed.

This allows the rear drivetrain to recouple shortly before it is needed.

The all-wheel drive system is designed for high motor power. Your vehicle is exceptionally powerful and has excellent driving characteristics both under normal driving conditions and on snow and ice. Always read and follow safety precautions.

WARNING

  • Even in vehicles with all wheel drive, you should adapt your driving style to the current road and traffic conditions to reduce the risk of an accident.
  • The braking ability of your vehicle is limited to the traction of the wheels. In this way, it is not different from a two wheel drive vehicle.

    Do not drive too fast because this increases the risk of an accident.

  • Note that on wet streets, the front wheels can "hydroplane'" if driving at speeds that are too high. Unlike front wheel drive vehicles, the motor RPM does not increase suddenly when the vehicle begins hydroplaning.

    Adapt your speed to the road conditions to reduce the risk of an accident.

Sport differential

Applies to: vehicles with sport differential

The sport differential distributes the drive power to the rear axle based on the situation. The goal is a high level of agility and ability to accelerate on curves. The vehicle is very responsive to steering.

The settings depend on the selected Audi drive select* mode.

Messages

The following messages may appear depending on the vehicle equipment:

All-wheel drive: malfunction! You can continue driving. Please contact Service

Drive immediately to an authorized Audi dealer or authorized Audi Service Facility to have the malfunction repaired.

Sport differential: malfunction! Please contact Service

Drive immediately to an authorized Audi dealer or authorized Audi Service Facility to have the malfunction repaired.

All-wheel drive: too hot. Please adapt driving style. See owner's manual

The transmission temperature has increased significantly due to the sporty driving manner. Drive in a less sporty manner until the temperature returns to the normal range and the indicator light switches of.

Sport differential: temperature too high.

Please adapt driving style

The transmission temperature has increased significantly due to the sporty driving manner. Drive in a less sporty manner until the temperature returns to the normal range and the indicator light switches of.

WARNING

Contact an authorized Audi dealer or authorized Audi Service Facility if the sport differential is faulty or malfunctioning. The repair must be performed by trained personnel using the correct oil in order to ensure safety.

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