Extended warranty is available on the checkout page. This Astrostart remote control for cars is guaranteed to work with your system if you have the Astrostart QS-4U system installed in your car. This remote has 4 buttons and a green LED. Brand: Astrostart Condition: New FCC ID: J5F-TX1000 Four different remote controls can be programmed for a given vehicle. If a 5th remote is added the 1st is deleted. When the first code learned command is sent, all the old codes are cleared. Therefore, if you want to add a new remote, all the old ones must be programmed as well. Programming procedure: 1. Open hood. 2. Place key in ignition and turn to RUN position. 3. Apply the brake once. 4. You now have 10 seconds to turn the key from RUN to STOP position 3 times. 5. If this sequence is correctly carried out, the control module flashes parking lights. 6. Press any button on the new remote control (except the panic button). When access code of new remote is memorized, the control module will respond with 1 flash of the parking lights. 7. Repeat the above procedures for each remote control that has to be programmed, up to four remotes. 8. Apply the brake. 9. New remotes are ready and now added to the system.