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

Maintenance: Service and Repair



Diagnosis Maintenance: Diagnosis System

Reading out fault memory







Porsche System Tester is connected to the vehicle via a 16-pin diagnosis socket. The diagnosis socket is located inside the vehicle below the instrument panel near the driver (left-hand drive vehicles) or the passenger (right-hand drive vehicles) -Arrow-.

1. Start Porsche System Tester (PST) and follow the instructions on the Tester.
2. Select vehicle type, click [>>] and perform the automatic control module search.
3. If a star appears in front of the relevant control module, read out the fault memory. Follow the PST instructions.