Differential Assembly: Service Precautions

General Information for Safety Precautions and Procedures


For work, where the ignition must be turned on.

There is a risk of unexpected engine start and of being poisoned by gas in enclosed spaces when working with the ignition already turned on or with the engine running. Risk of personal injury or to clothes when connecting.

Perform the following items before turning on the ignition:

• Place the selector lever in position P

• Activate the parking brake

• Turn the ignition off.

• Open the hood

• Connect the charging device for example battery charger (VAS 5095A) on the battery jump start terminal for the 12V vehicle electrical system.

• Turn the ignition on.

General safety precautions and safety precautions for work performed whereby the ignition must not be turned on.

Risk of unintended engine start.

Observe the following to avoid personal injury and vehicle damage:

There is a risk of injury and accident from accidentally engaging a gear when the engine is running.

• Before performing any work with the engine running, move the selector lever into "P" and press the parking brake button to set the electro-mechanical parking brake.

Danger of poisonous exhaust gas when the engine is running.

• When the engine is running, an exhaust extraction system must always be connected to exhaust system.

Safety Precautions, Vehicles with Start/Stop System

Danger of injury through automatic motor starting with vehicles with the Start/Stop System.

• For vehicles with an activated Start/Stop System (recognizable from a notification in the instrument cluster), the motor can be started automatically if needed.

• Thus, make sure that the Start/Stop System is disabled when working on the vehicle (turn off ignition, if needed, turn the ignition back on).

To prevent personal injury and damage to electrical and electronic components, observe the following:

• Connect and disconnect test equipment only when the ignition is off.

Risk of damaging electronic components when disconnecting the battery.

• Complete the steps for disconnecting the battery.

• Always turn off the ignition before disconnecting the battery.

- Disconnect the battery.

If testing equipment must be used during a road test, observe the following:

Distraction and testing equipment that is not secured properly can cause accidents.

The passenger airbag could pose a risk if it deploys in a collision.

• Operating testing equipment while driving causes it to shift position.

• There is an increased risk of injury due to unsecured testing equipment.

• Always secure testing equipment on the rear seat using a strap and have a second person in the rear seat operate it.