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)

Or, hide this message: temporarily or permanently

Introduction

The BMW On-Board Computer II

Introduction

In 1981, an On-Board Computer was introduced for the BMW Seven-Series models. If offered many economy and safety features, and was subsequently made available on the Five-, and Six-Series Cars.

This brochure deals with a 'Second-Generation' computer which first appeared on the Three's. Known as the "On-Board Computer II," it takes full advantage of the latest developments in semiconductor technology, allowing more advanced circuitry to provide the customer with a greater scope of information, improved control systems, and greater convenience and adaptability.