2001 Toyota 4Runner Light Bulbs Types:
| Bulb | Type |
| Headlight | HB2 |
| Front fog lights | H3 |
| Parking and front side marker lights | Wedge base bulbs (clear) |
| Front turn signal lights | Wedge base bulbs (clear) |
| Rear turn signal lights | Wedge base bulbs (amber) |
| Stop and tail lights | Wedge base bulbs (clear) |
| Back−up lights | Wedge base bulbs (clear) |
| License plate light | Wedge base bulbs (clear) |
| High mounted stop light | Wedge base bulbs (clear) |
| Interior light | Double end bulbs |
| Personal lights | Double end bulbs |
| Glove box light | Wedge base bulbs (clear) |
| Luggage compartment light | Double end bulbs |
