Operation CHARM: Car repair manuals for everyone.

Safety Precautions






Safety Precautions

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 work is done with the engine running, move the selector lever into P and press the parking brake button to engage the electromechanical parking brake.

To prevent personal injury and damage or destruction of electrical and electronic components, observe the following:

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


Risk of destroying electronic components when disconnecting the battery.

Observe measures for disconnecting battery.

Only disconnect the battery with ignition switched off.

- Connect 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.