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

Steering Mounted Controls Transmitter: Service and Repair

Steering Wheel Radio Control Switch:





Remove or Disconnect
1. Disable the SIR System.
2. Inflator module.
3. Accessory controls wire harness retainer.
4. Accessory control(s) from steering wheel by prying out at lower edge.
5. Wire harness connector from control(s).

Install or Connect
1. Wire harness connector to control(s).
2. Accessory control(s) into steering wheel socket.
3. Accessory control wire harness retainer.
4. Inflator module.
5. Enable the SIR System.