this should be what you need
2000 Toyota Truck Sienna 3.0L EFI 6cyl
The Flasher is located:
Behind left side of instrument panel
lashers are components of both turn and hazard systems.
The use of the wrong bulb can cause the flasher to flash too fast or
too slow. Turn signals on American cars use either a 1257 or a 1034
bulb, which are interchangeable. A 1257 bulb draws more current than a
1034, however and if it is used in place of a 1034, the flasher will
flash faster. If a 1034 bulb is used in place of an 1157 bulb, it will
There are different flashers available to match the head of theWARNING
bulbs in the circuit. For instance, if a trailer is being towed and its
lights are wired into the turn signal circuit, the extra circuit of the
trailer lights will cause the flasher to flash too fast. A heavy-duty
(variable load) flasher will solve the problem. This usually fits the
socket without modifications. If the heavy-duty flasher is used when
the trailer is disconnected, the signals would normally flash more
slowly. Although heavy-duty flashers will operate additional bulbs,
they have one big disadvantage and should not be used unless it is
necessary. These flashers will not cause the turn signals to flash
slower if a bulb burns out. When a turn signal bulb fails, the driver
has no idea that it did.
The flasher unit for turn signals should not be switched with a flasher unit for the hazard lights.
To check the filaments of all of the turn signal bulbs and the brake
lights, turn on the hazard flashers and walk around the car.
A flasher can be located in the fuse panel, under the dash in the
wiring loom, in a glove box, under the hood, or somewhere else.
A fuse panel.
Most flashers are located under the dashboard on the driver's side.
When working properly, a flasher is easy to locate because it makes a
ticking sound. When it is not functioning, a service manual may be
needed to help locate it. Lighting company catalogs generally have
pages listing the location of flashers.
To replace a flasher:
- A flasher features two or three prongs that plug into a socket.
- Just pull the flasher out of the socket and replace it with a new one.