Toyota Sienna 2010-2026 Owners Manual: Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown. If this happens, check and replace the fuses as necessary.
- Turn the engine switch to the “LOCK” position (vehicles without a smart key system) or off (vehicles with a smart key system).
- Open the fuse box cover.
- Engine compartment
Push the tab in and lift the lid off.
- Driver’s side instrument panel
Remove the lid
- Remove the fuse.
Only type A fuses can be removed using the pullout tool.
- Check if the fuse has blown.
- Normal fuse
- Blown fuse
Type A and B
Replace the blown fuse with a new fuse of an appropriate amperage rating. The amperage rating can be found on the fuse box lid.
Type C, D and E
Contact your Toyota dealer.
- Type A
- Type B
- Type C
- Type D
- Type E
After a fuse is replaced
- If the lights do not turn on even after the fuse has been replaced, a bulb may need replacement.
- If the replaced fuse blows again, have the vehicle inspected by your Toyota dealer.
If there is an overload in the circuit
The fuses are designed to blow, protecting the wiring harness from damage.
When replacing light bulbs
Toyota recommends that you use genuine Toyota products designed for this vehicle. Because certain bulbs are connected to circuits designed to prevent overload, non-genuine parts or parts not designed for this vehicle may be unusable.
| WARNING To prevent system breakdowns and vehicle fire Observe the following precautions. Failing to do so may cause damage to the vehicle, and possibly a fire or injury.
|
| NOTICE Before replacing fuses Have the cause of electrical overload determined and repaired by your Toyota dealer as soon as possible. |
Wireless remote control/
electronic key battery
Replace the battery with a new one if it is depleted.
You will need the following items:
Flathead screwdriver
Lithium battery CR2032
Replacing the battery
Vehicles without a smart key sy ...
Light bulbs
You may replace the following bulbs by yourself. The difficulty
level of replacement varies depending on the bulb. If necessary
bulb replacement seems difficult to perform, contact your Toyota
deal ...
Other materials:
Сamshaft timing oil control valve assembly
COMPONENTS
ON-VEHICLE INSPECTION
1. INSPECT CAMSHAFT TIMING CONTROL VALVE ASSEMBLY
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Start the engine and warm it up.
(d) Select the intelligent tester from the ACTIVE TEST
...
Inspection
1. Inspect heated oxygen sensor (for bank 1
sensor 2)
(a) Measure the resistance of the sensor.
Standard resistance
If the resistance is not as specified, replace the
sensor.
2. HEATED OXYGEN SENSOR (for Bank 2 Sensor 2)
(a) Measure the resistance of the sensor.
Standard resistance ...
Window glass antenna wire
INSPECTION
1. INSPECT WINDOW GLASS ANTENNA WIRE
Inspect the wind glass antenna wire.
NOTICE:
When cleaning the glass, use a soft, dry cloth,
and wipe the glass in the direction of the wire.
Take care not to damage the wires. Do not use
detergents or glass cleaners with abrasiv ...
