2008 Lexus IS 350FACTORY OEM SERVICE PROCEDURE

Can Communication System: Precaution

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
  1. STEERING SYSTEM HANDLING PRECAUTIONS 
    1. Care must be taken when replacing parts Incorrect replacement could affect the performance of the steering system and result in hazardous driving
  2. SRS AIRBAG SYSTEM HANDLING PRECAUTIONS 
    1. This vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as the driver airbag and font passenger airbag Failure to carry out service operations in the correct sequence could cause unexpected SRS deployment during servicing and may lead to a serious accident Before servicing (including removal or installation of parts, inspection or replacement), be sure to read the precautionary notice for the Supplemental Restraint System (See PRECAUTION )
  3. BUS LINE REPAIR 
    1. After repairing the bus line with solder, wrap the repaired part with electrical tape
      NOTE:
      • The CANL bus line and CANH bus line must be installed together all the times.
      • When installing, make sure to twist them.
      • CAN bus lines are likely to be influenced by electrical noise if they are not twisted.
      • The difference in length between the CANL bus line and CANH bus line should be 100 mm (3.94 in.) or less.
      • Leave approximately 80 mm (3.15 in.) loose in the twisted wires around the connector.
        Fig 1: Identifying Bus Line Repair
        G04835666Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Do not use a bypass wire between the connectors
      NOTE: The ability of the twisted bus lines to resist interference will be lost if the bypass wire is used.
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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.