Operation CHARM: Car repair manuals for everyone.

Keyless Entry Transmitter: Testing and Inspection

The range of the RKE system is about 10 meters (32 feet). It is normal for any RKE system to experience a decrease in range at certain times.

IMPORTANT: If the transmitter(s) won't work, perform the "RKE system check" before continuing with the following transmitter and remote keyless entry (RKE) module range diagnostics. System Check - Remote Keyless Entry (RKE)

If the RKE system check has been performed and the customer still comments that the transmitters do not work or that they are having to stand closer than normal to their Saturn for the transmitter to work, advise them of the following points:
^ The transmitter battery may have to be replaced. (Refer to "Replacing Battery in Transmitter"). Service and Repair
^ The transmitter may need to be synchronized with the remote keyless entry (RKE) module (Refer to "Synchronization".) Transmitter Synchronization
^ The customer may be too far from their Saturn. Check with the customer on how far they are standing from the vehicle.
^ Weather conditions and ambient temperature may affect transmitter and RKE module range. The customer may need to stand closer to their Saturn in rain and snow or in very high and low temperatures.
^ The customer may be in a crowded parking lot and other vehicles are blocking the signal.
OR
The Saturn's spaceframe structure may be blocking the signal. Instruct the customer to take a few steps to the right or left if this happens again.
^ The orientation of the transmitter may need to be changed. The transmitter may work better held vertically or horizontally, depending on the customer 5 location around the vehicle.
^ The customer may be experiencing radio frequency interference (RFI). RFI is caused by close proximity to radio broadcast stations, motors, heaters, alarm systems, and other frequencies that distort the RKE transmission frequency. Inform the customer and ask them to check for these items in their location.