Do it yourself, change the front parking light and turn signal assembly on your Toyota Sienna, the model made between the years 1998 and 2003. This replacement is very, very easy and can be done in less than 10 minutes, using only a Phillips screwdriver.
In the beginning, open the hood of your car and locate above the turn light that needs replacement, the screw marked with a red circle in the picture below. It can be removed without problems with a Phillips screwdriver.
After you do it, you can grab and pull forward on the lamp, shake it a little bit, until it comes out. Behind it is the light bulb. You can disconnect its harness (see image below) by hand or you can remove the bulb by twisting its socket counterclockwise.
At this point you can service the bulb if needed, or you can just replace the entire parking light assembly with a new one. Connect its harness, insert it back into the body of the car and secure it with that Phillips screw. This is all you have to do, in order to remove and replace the parking light and turn signal assembly on your Toyota Sienna, the model produced between the years 1998 and 2003.