2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Pattern Select Switch: Inspection

  1. INSPECT NO. 1 PATTERN SELECT SWITCH ASSEMBLY 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 1: Identifying Pattern Select Switch Connector Terminal
      G05750944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      1 (E) - 6 (P) Press continuously Pattern select switch (SPORT) Below 1 Ω
      1 (E) - 6 (P) Release Pattern select switch (SPORT) 10 kΩ or higher
      1 (E) - 3 (2ND) Press continuously Pattern select switch (SNOW) Below 1 Ω
      1 (E) - 3 (2ND) Release Pattern select switch (SNOW) 10 kΩ or higher

      If the resistance value is not as specified, replace the pattern select switch.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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