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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Test J: The Remote Keyless Entry (RKE) Transmitter Has Poor Range Performance

PINPOINT TEST J: THE REMOTE KEYLESS ENTRY (RKE) TRANSMITTER HAS POOR RANGE PERFORMANCE


J1-J3:






J4:






Normal Operation
Remote locking and unlocking of the doors is accomplished by the vehicle security module receiving a command message from the RKE transmitter through the vehicle security module external antenna. The vehicle security module processes the command and sends a signal directly to the door lock actuators. The RKE transmitter has a minimum operating range of 10 m (33 feet).

All RKE transmitters need to be present to begin diagnosis of the RKE system.

Aftermarket or dealer-installed system may adversely affect the RKE system operation. These systems should be disconnected before diagnosing any RKE concerns.

Possible Causes
- RKE transmitter
- vehicle security module external antenna
- aftermarket systems
- high power devices
- TV/radio transmission towers
- vehicle security module