Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Computers and Control Systems: Service Precautions







Test Drives with the use of Testing and Measuring Devices

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 to operate it.