2003 Lexus IS 300 Base, StandardFACTORY OEM SERVICE PROCEDURE

Wireless Remote Control: Notes

CAUTION: The wireless remote control key is an electronic component. Observe the following instructions in order not to cause damage to the key:
  • Do not leave the wireless remote control key on places where the temperature becomes high such as on the dashboard.
  • Do not disassemble it.
  • Avoid knocking it hard against other objects or dropping it.
  • Avoid putting it in water.

The wireless remote control key operates the following components:

  • Sedan -Β  Locking the doors and sounding an alarm, unlocking the doors, indicator light and unlocking the trunk lid.
  • SportCross -Β  Locking the doors, unlocking the doors, indicator light and sounding an alarm.

When you operate any button on the key, push it slowly and surely. At this time, the indicator light on the key grip flashes once. The operational range of the wireless remote control is approximately 3 feet (1 meter). The effective range may vary with different conditions.

In the following cases, the battery in the key may be discharged:

  • The remote control does not work.
  • The operational range of the wireless remote control becomes extremely short.
  • The indicator light on the key is dimmed or does not come on.
If this is the case, replace the battery. See WIRELESS DOOR LOCK TRANSMITTER BATTERYΒ  under REMOVAL & INSTALLATION. You can use up to 4 wireless remote control keys for the same vehicle.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.