Toyota Tundra Service Manual: System Description

SYSTEM DESCRIPTION

1. GENERAL

(a) By operating the seat heater switch, which is located in the air conditioning control assembly, the temperature is controlled to 3 settings.

  • LOWEST: 32.5°C (90.5°F)
  • MID: 44.5°C (112.1°F)
  • HIGH: 58.25°C (136.85°F)

(b) Whether the seat heater is on or off can be determined by checking if the indication is located in air conditioning control assembly.

(c) The seat heaters of both seats are controlled by the seat heater switches, which are located on the air conditioning control assembly.

    Problem Symptoms Table

    System Diagram

    See More:

    Toyota Tundra Service Manual > Power Mirror Control System(w/ Memory): Power Mirror Surface Position is not Memorized
    DESCRIPTION When the seat memory switch is operated, the switch input signal is sent via CAN communication from the outer mirror control ECU assembly LH to the main body ECU (multiplex network body ECU). The main body ECU (multiplex network body ECU) then sends the memorization request or recall req ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2026 Copyright www.ttundra.com
    0.0274