Toyota Sienna 2010-2026 Owners Manual: Using the air conditioning system and defogger

Interior features

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Front automatic air conditioning system

Air outlets and fan speed are automatically adjusted according to the temperature setting. ...

Other materials:

Window defogger switch
INSPECTION 1. INSPECT WINDOW DEFOGGER SWITCH  Check the defogger switch illuminates. Standard If the result is not as specified, replace the switch assembly or bulb. Check the defogger timer.  Connect the positive (+) lead from the battery to terminal 2 and ...

Heater relay (for rear air conditioning system)
ON-VEHICLE INSPECTION 1. INSPECT REAR HEATER RELAY (a) Remove the rear heater relay. (b) Measure the resistance according to the value(s) in the table below. Standard resistance If the resistance is not as specified, replace the rear heater relay. ...

Push Switch / Key Unlock Warning Switch Malfunction
DTC B2780 Push Switch / Key Unlock Warning Switch Malfunction DESCRIPTION This DTC will be output if the transponder key ECU does not detect that the unlock warning switch is on even when the ignition switch is on (Under the normal conditions, the unlock warning switch is on when the ignitio ...