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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Keyless Entry Transmitter: Description and Operation

Universal Transmitter Location:




The Universal Transmitter, replaces the hand held remote controls that open the garage door, motorized gates, or home lighting in/outside the home. This device memorizes the activator codes for up to three remote controlled devices. It triggers those devices at the push of a button, located in a unit permanently mounted in your overhead console (if equipped).

The transmitter operates off your vehicle's battery and charging system; no batteries are needed.

The Universal Transmitter incorporates a Rolling Code technology (random digital code signals from the remote transmitter) within the transmitter module. This is done so, as an added security measure.

Features of the Universal Transmitter are:
- Can be used with most other Radio Frequency (RF) activated devices.
- Individual channels can be trained.
- Stores transmitter data in permanent memory - retraining is not required even if the battery dies or is disconnected.

To operate, simply press the appropriate button on the Universal Transmitter. The red LED will light up while the signal is being transmitted.

NOTE: For security reasons, you are able to erase the trained frequencies.