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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Modify Coding

Modify coding

In the menu item Modify coding, the following coding can be changed:
1. Mileage: miles (kilometers)
2. Clock mode 12 h (24 h)
3. On-board computer present (not present)
4. Stop light switch PSM / ABS

Procedure:
1. Connect PST2 and switch on the ignition
2. Select vehicle type 911 (996) and start the automatic control module search.
3. Select Instrument cluster control module
4. Select menu item Modify coding
5. Select Coding from the function selection
6. Follow the instructions of the diagnostic tester
7. Confirm with the Coding (F8) key
8. Ignition off
9. Ignition on (coding is adopted)

NOTE: Incorrect coding of the stop light switch leads to malfunctions in the instrument cluster. The warning lights for ABS or brake fluid level are triggered continuously.