Lexus RX300 Manual page 71

INTERIOR EQUIPMENT
3. When the frequency and code is registered, the indicator light
flashes rapidly. At this point, you can release both buttons.
4. To program the remaining buttons, repeat steps "1" through "3".
If you want to write a new program over the program set already,
select a button you want to program and repeat the procedure from
step "1". The previous program is erased and a new program will be
set.
If the transmitter has a "rolling code" feature, it is necessary to
program the in–garage receiver, after programming the garage
door opener in the vehicle. For setting the in–garage receiver,
refer to the instruction manual for the receiver.
After setting the in–garage receiver, push the programmed button on
the vehicle for about 1 to 2 seconds within the operational range.
Garage door openers manufactured before 1982 cannot be
programmed.
CAUTION
When programming or operating the garage door opener,
make sure there is no one around the moving door. It is
dangerous if someone is caught.
(b) Operating the garage door opener
Push the appropriate button to activate the garage door opener. The
indicator light comes on. The garage door opener continues to send
the signal for up to 20 seconds as long as the button is pushed.
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(c) Erasing the garage door opener memory
Push and hold down the 2 outside buttons until the indicator light
flashes. All memorized data will be erased.
FCC ID: CB2V94800
CANADA: 1763 102 264
This device complies with FCC Rules part 15.
Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2) this
device must accept any interference that may be received,
including interference that may cause undesired operation.
WARNING: This transmitter has been tested and
complies with FCC and DOC/MDC rules. Changes or
modifications not expressly approved by the partly
responsible for compliance could void the user's
authority to operate the device.