Section 393 (Lighting System): Precaution

WARNING: This page is about a different car, the 2003 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.

PRECAUTION OF HEADLIGHT BULB REPLACEMENT
1. If adhered oil is not removed from the halogen lamp surface, the lamp service life is shortened as it becomes hot when it is turned on.
2. Since the internal pressure of a halogen lamp is high, dropping, hitting or damaging the bulb may cause the glass to scatter. Therefore, handle it with great care.
3. When replacing bulbs, do not remove until a new bulb is available for immediate replacement.
  If the bulb is left out for a long period of time, the lens may become covered with dirt or moisture.
4. For replacement, be sure to use a bulb of the same wattage.
5. Firmly reinstall the socket after bulb replacement. Otherwise, cloudy lens or invasion by water will be caused.